At American Medical Associates, our mental health experts are committed to providing exceptional care to support your well-being. Visit our mental health page to learn more about our services and how we can help you. Mental Health Providers Michael Zadakis PMHNP-BC Learn More At American Medical Associates, our mental health team is composed of experienced Nurse Practitioners, and Counselors dedicated to providing personalized care to help patients achieve optimal mental wellness. Our providers listen to each patient's concerns, develop individualized treatment plans, and stay current on the latest treatments and technologies. With their expertise and commitment to patient care, our providers are essential to our mental health team and dedicated to improving our patients' mental health outcomes. Dr. Stephanie Leonard Clinical Psychologist Learn More At American Medical Associates, our mental health team is composed of experienced Nurse Practitioners, and Counselors dedicated to providing personalized care to help patients achieve optimal mental wellness. Our providers listen to each patient's concerns, develop individualized treatment plans, and stay current on the latest treatments and technologies. With their expertise and commitment to patient care, our providers are essential to our mental health team and dedicated to improving our patients' mental health outcomes. Mental health conditions can manifest in a variety of symptoms and the specific symptoms depend on the type and severity of each of those conditions. Our Mental Health Providers are highly trained to provide mental health care to all of our patients. AMA Mental Health Division At American Medical Associates, we also offer Spravato, a medication that is FDA-approved for the treatment of treatment-resistant depression. Spravato is an esketamine nasal spray that is administered in a medical setting and is used in conjunction with an oral antidepressant. Spravato is intended for use in patients who have not seen improvement from other treatments, such as antidepressants. Our team of mental health professionals will work with you to determine if Spravato is a suitable treatment option for you, and will monitor your progress throughout the course of treatment. We do not offer IV Ketamine because it is not FDA approved, unregulated and is not covered by any insurance plans. We offer Spravato treatments, es-Ketamine, which is a FDA approved and is covered by most insurance companies with prior authorization. Spravato comes in the form of a nasal spray and is used to treat Chronic Depression and Suicidal Ideations. It is a Controlled Substance and is treated under the strict supervision of Healthcare Providers. The results are life-changing for our patients. Spravato and Depression Treatment Center Learn More Child Psychiatry Services Child Psychiatry, also known as Pediatric Psychiatry, is a branch of psychiatry that specializes in the diagnosis, treatment, and prevention of mental health disorders in children Adolescence. Child Psychiatrists are Medical Doctors who have completed further specialized training in Child and Adolescent Psychiatry, after medical school and residency. Child Psychiatrist assess and treat of wide range of Mental health conditions that affect children and teenagers, but not limited to: Attention deficit/hyperactivity disorder (ADHD) Autism spectrum disorders (ASD) Anxiety disorders Depression Bipolar disorders Eating disorders Obsessive compulsive disorders (OCD) Post traumatic stress disorder (PTSD) Schizophrenia and other psychotic disorders Substance Use Disorders Initial Consultation (1 Hour) Follow Up Consultation (40 Minutes) Adult Psychiatric Services Adult Psychiatrists (MD) and Psychiatric Nurse Practitioners (PMHNP) assess and treat a wide range of mental health conditions that affect adults, including, but not limited to: Depression Anxiety disorders, such as generalized anxiety disorder, panic disorder, and social anxiety disorder Bipolar disorder Schizophrenia and other psychotic disorders Obsessive compulsive disorder (OCD) Post traumatic stress disorder (PTSD) Eating disorders, such as anorexia, nervosa, bulimia, nervosa, and binge eating disorder Personality disorders Substance use disorders, such as alcohol use disorder, and opioid use disorder Sleep disorders, insomnia for sleep apnea Psychiatry is a branch of medicine that focuses on the diagnosis, treatment, and prevention of mental, emotional, and behavioral disorders. Mental health professionals are providers who specialize in mental health and are trained to assess psychological aspects of mental illness. They use a combination of approaches in their practice, including medication, psychotherapy, and other forms of treatment to help individuals manage their symptoms and improve their overall well-being. Adult Psychiatry, also known as Adult or General Psychiatry, is a branch of medicine that specializes in the diagnosis, treatment, and prevention of mental health disorders in adults, psychiatrists, who practice, adult psychiatry are medical doctors who have completed specialized training in psychiatry after medical school and residency.

At American Medical Associates, our internal medicine specialists provide comprehensive care for all your health needs. Learn more about our services and approach to care on our internal medicine page. At American Medical Associates, we strive to provide superior patient care by offering an integrated approach to healthcare that combines the strengths of Eastern and Western medicine. By combining the best of both worlds, we can offer our patients a more holistic approach to healthcare that addresses their unique needs and preferences. Our goal is to help our patients achieve optimal health and wellness by providing them with the most comprehensive and effective care possible. Internal Medicine Dr. Nadir is an accomplished Board-Certified Internal Medicine Physician with an extensive medical background. She completed her residency at Maricopa County and Good Samaritan Medical Center in Arizona in 2006. At American Medical Associates (AMA), she practices in a Primary Care setting, while also serving as a full-time Hospitalist for Dignity Health, including Chandler Regional and Mercy Gilbert Hospitals. Her diverse scope of practice enables her to provide her patients with comprehensive care, including early diagnosis and treatment. As a Licensed Cosmetic Injector, Dr. Nadir also owns and oversees all treatments and procedures at Vitalize Nation. Her dedication to the health and well-being of her patients is evident in her commitment to delivering the highest quality of care. Originally from New York, Dr. Nadir has lived in several different states but chose to settle in Arizona after arriving here in 2001. She currently resides in Gilbert, AZ, with her husband and four children. During her leisure time, she enjoys traveling and spending time with her family, with the beach being her favorite vacation spot. Dr. Ehreema Nadir Internal Medicine Provider’s Ehreema Nadir, MD Chief Executive Officer (CEO) Learn More Tanya Fetters FNP-C Learn More Colton Landrum Certified Physician Assistant Learn More The Internal Medicine department at American Medical Associates takes pride in our exceptional team of highly skilled and dedicated healthcare professionals. Our team is comprised of board-certified internal medicine physicians, nurse practitioners, and physician assistants, who collectively bring years of experience in their respective fields to provide our patients with the best possible care. We are committed to delivering the highest quality of medical care to our patients and continuously stay abreast of the latest advances in medical knowledge. With our unwavering dedication and commitment, you can trust that you're in good hands at American Medical Associates. Internal medicine is a medical specialty focused on the prevention, diagnosis, and treatment of adult diseases. Physicians specializing in internal medicine are called Internist or Internal Medicine Physicians. Dr. Nadir started the original clinic in Gilbert in 2007. We relocated to Chandler in 2020. Our Physicians (MDs) and Family Nurse Practitioners (FNPs) are skilled in managing a wide range of complex illnesses and chronic conditions, often serving as Primary Care Physicians for patients over the age of 14. Our Internal Medicine Providers have undergone intensive training to develop expertise in the diagnosis and treatment of diseases affecting various organ systems in the body. They are trained to provide comprehensive care for adults, including preventative care, routine, screenings, managing chronic conditions, and coordinating care with other specialists when necessary. Internal Medicine (ages 14+) Internal medicine, encompasses abroad, spectrum of medical conditions, including, but not limited to: Cardiovascular diseases Diabetes Hypertension, high blood pressure Infectious diseases Gastrointestinal disorders Respiratory Diseases Endocrine disorders Rheumatologic and auto immune conditions Neurological disorders Hematological disorders Our healthcare Providers provide long-term care for patients and manage their overall health. Dr. Ehreema also works at Dignity Hospitals as a Hospitalist and can directly admit patients if needed after being seen at AMA. Our Internal Medicine Services Annual Wellness Exams Acute Disease Management Chronic Disease Management Medication Management Sports Physicals ADOT Physicals Minor Injury Treatment Weight Loss Hormone Therapy (Menopausal Symptoms) Well-Women Exams (PAPs) Geriatric Care

Get comprehensive Nephrology care from the highly skilled team at American Medical Associates. Our expert Nephrologists offer cutting-edge treatments and personalized care for all kidney-related conditions. Schedule an appointment now. Nephrology Dr. Khan is a board-qualified Nephrologist practicing with this practice since 2008. Dr. Khan also works at several East Valley hospitals including Chandler Regional Medical Center, Mercy Gilbert Medical Center and the Banner health facilities. Dr. Khan completed his residency in Internal Medicine in 2007 at Lutheran Medical Center in Brooklyn NY. He practiced as an Internal Medicine physician for over 6 years prior to completing his fellowship in Nephrology in 2017 from University of Arizona (UofA) in Tucson, AZ. He currently resides in Gilbert, AZ with his wife and 4 children. In his time off, Dr Khan loves to travel and spend time with their family. He is vested in the well being of his patients, not only from a renal, but also from an internal medicine stand point. He has extensive background and experience in civil & structural engineering as well as construction projects. He builds enthusiast level computers for relaxation. He works on and modifies performance automobiles and machinery as a hobby in his free time. His favorite author is Stephen Hawking and is a huge fan of all his work towards the field of theoretical astrophysics. He finds it relaxing to build, modify and fix things. Hassan Khan, MD Nephrology Director Nephrology (All age's) Nephrology is a medical specialty focused on the diagnosis and treatment of diseases and disorders related to the kidneys and their associated systems. Nephrologists are Physicians who specialize in nephrology and our experts in managing conditions that affect kidney functions and overall renal health. Conditions treated under nephrology include: Chronic Kidney Disease (CKD) Acute Kidney Injury (AKI) Hypertension (High Blood Pressure) Glomerular Diseases Renal Tubular Disorders Kidney Stones Fluid and Electrolyte Disorders End-Stage Renal Disease (ESRD) Overall, Nephrology encompasses, the diagnosis, treatment, and management of a wide range of kidney related conditions, with the goal of preserving kidney function, improving quality of life, and releasing the risk of complications for patients with Renal Disease.

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"Discover American Medical Associates, a comprehensive medical center offering expert care in Internal Medicine, Spravato treatment, Mental Health, Weight Loss, and Nephrology. Trust our dedicated team to prioritize your health and well-being." American Medical Associates (AMA) ACCEPTING NEW PATIENTS LEARN MORE ABOUT US Physician owned and operated Internal Medicine and Behavioral Health organization in Chandler and City of Maricopa in Arizona. Led by Dr. Ehreema Nadir and Dr. Hassan Khan, the organization covers the following Healthcare Services: Internal Medicine (Age's 14+) Nephrology (All Age's) Mental Health (Age's 3+) Our Mission To provide comprehensive and compassionate patient care that integrates medical and mental health services while emphasizing preventative medicine. We are committed to fostering a supportive and inclusive environment where our patients feel empowered to actively participate in their Healthcare journey. Schedule Your Appointment Our Focus: All of our policies and protocols are established around providing the best possible care to our patients. Our Team consists of MDs, NPs, RNs, MAs, Managers and other support staff to achieve that goal. Patient-Centered Care: To us, Patient Care is First, and Foremost. Compassionate and Respectful Care: We treat our patients with compassion, empathy, and respect always. Every interaction should demonstrate a commitment to meeting patients individual needs, preferences, and cultural backgrounds. Accessible and Responsive Services: We prioritize accessibility and responsiveness to patient’s needs, offering convenient online appointment scheduling, timely communication, and efficient care delivery. We have extended our hours in the evenings and on Saturdays to provide more options for our patients. Holistic Approach to Care: We encompass a holistic approach that considers not only physical health, but also mental, emotional, social well-being. This may involve collaboration in addressing social determinants of health and providing comprehensive support services. Employee Focus: We know our employees are our biggest assets because of how much they care about our patients. Supportive Work Environment: We strive to ensure our employees feel valued, supported, and well powered within our clinics. We foster a family environment consisting of respect, teamwork, and professional development. We provide training, education, and mentorship for all positions at AMA. Clear Communication and Feedback: AMA is a ‘Performance Based Organization’. We are good at what we do and that is because we have highly qualified and very caring staff. We provide constant feedback sessions to our employees, Performance, evaluations, and staff meetings to help address concerns, recognize achievements, and promote continuous improvement. Work life Balance and Wellness Programs: We prioritize the well-being of all of our employees and resources and programs to support our staff. We are big in Work-Life balance as most of us have kids and families. As a family-owned organization, we offer a great deal of flexibility to our employees. Our employees enjoy a lot of benefits beyond basic things just as Health and Retirement benefits. Community Outreach: We strongly believe in giving back to our community and supporting the underserved. Engagement with Community Partners: AMA has partnered up with several organizations in Chandler and the East Valley community to support those in need. AMA proudly hosts Food Drives for Matthew’s Crossing Food Back twice a year. We are also partnered with Mesa Local Outreach program for the Homeless and provide medical supplies. Health Education and Promotion: AMA takes part in various events with local city and private organizations to promote awareness around prevalent medical and mental health conditions. Access to underserved Populations: AMA has always looked for gaps in medical and mental health services in certain areas and too the opportunity to serve that community. We are looking to bring services to underserved communities like the City of Maricopa services that do not exist in that community. We hope to fill many gaps medical and mental health services in Arizona’s rural areas. WE TAKE MOST INSURANCES Including Medicare and AHCCCS View Lists of Insurance View Lists of Insurance Patient Hours Monday: 8:00am - 5:00pm Tuesday: 8:00am - 5:00pm Wednesday: 8:00am - 5:00pm Thursday: 9:00am - 5:00pm Friday: 8:00am - 5:00pm Saturday & Sunday: Closed MARICOPA HOURS Monday: 8:00am - 5:00pm Tuesday: 8:00am - 6:00pm Wednesday: 8:00am - 5:00pm Thursday: 8:00am - 6:00pm Friday: 8:00am - 6:00pm Saturday: Closed CHANDLER HOURS Sunday: Closed Sonora Quest Lab in Chandler: Mon, Wed, Thurs, Fri Sonora Quest Lab in Maricopa: Tuesday Patient Hours Monday 8:00am - 5:00pm Tuesday 8:00am - 5:00pm Wednesday 8:00am - 5:00pm Thursday 8:00am - 5:00pm Friday 8:00am - 5:00pm Saturday & Sunday Closed MARICOPA HOURS Monday 8:00am - 5:00pm Tuesday 8:00am - 5:00pm Wednesday 8:00am - 5:00pm Thursday 8:00am - 6:00pm Friday 8:00am - 5:00pm Saturday & Sunday Closed CHANDLER HOURS Sonora Quest Lab in clinic Mon, Wed, Thurs, Fri Sonora Quest Lab in clinic Tuesday Our Internal Medicine Services Annual Wellness Exams Acute Disease Management Chronic Disease Management Medication Management Sports Physicals ADOT Physicals Minor Injury Treatment Weight Loss Hormone Therapy (Menopausal Symptoms) Well-Women Exams (PAPs) Geriatric Care Psychiatry is a branch of medicine that focuses on the diagnosis, treatment, and prevention of mental, emotional, and behavioral disorders. Mental health professionals are providers who specialize in mental health and are trained to assess psychological aspects of mental illness. They use a combination of approaches in their practice, including medication, psychotherapy, and other forms of treatment to help individuals manage their symptoms and improve their overall well-being. Adult Psychiatry, also known as Adult or General Psychiatry, is a branch of medicine that specializes in the diagnosis, treatment, and prevention of mental health disorders in adults, psychiatrists, who practice, adult psychiatry are medical doctors who have completed specialized training in psychiatry after medical school and residency. Adult Psychiatric Services (Ages 14+) Adult Psychiatrists (MD) and Psychiatric Nurse Practitioners (PMHNP) assess and treat a wide range of mental health conditions that affect adults, including, but not limited to: Depression Anxiety disorders, such as generalized anxiety disorder, panic disorder, and social anxiety disorder Bipolar disorder Schizophrenia and other psychotic disorders Obsessive compulsive disorder (OCD) Post traumatic stress disorder (PTSD) Eating disorders, such as anorexia, nervosa, bulimia, nervosa, and binge eating disorder Personality disorders Substance use disorders, such as alcohol use disorder, and opioid use disorder Sleep disorders, insomnia for sleep apnea Internal Medicine (ages 14+) Internal medicine is a medical specialty focused on the prevention, diagnosis, and treatment of adult diseases. Physicians specializing in internal medicine are called Internist or Internal Medicine Physicians. Dr. Nadir started the original clinic in Gilbert in 2007. We relocated to Chandler in 2020. Our Physicians (MDs) and Family Nurse Practitioners (FNPs) are skilled in managing a wide range of complex illnesses and chronic conditions, often serving as Primary Care Physicians for patients over the age of 14. Our Internal Medicine Providers have undergone intensive training to develop expertise in the diagnosis and treatment of diseases affecting various organ systems in the body. They are trained to provide comprehensive care for adults, including preventative care, routine, screenings, managing chronic conditions, and coordinating care with other specialists when necessary. Internal medicine, encompasses abroad, spectrum of medical conditions, including, but not limited to: Cardiovascular diseases Diabetes Hypertension, high blood pressure Infectious diseases Gastrointestinal disorders Respiratory Diseases Endocrine disorders Rheumatologic and auto immune conditions Neurological disorders Hematological disorders Our healthcare Providers provide long-term care for patients and manage their overall health. Dr. Ehreema also works at Dignity Hospitals as a Hospitalist and can directly admit patients if needed after being seen at AMA. AMA Mental Health Division Mental health conditions can manifest in a variety of symptoms and the specific symptoms depend on the type and severity of each of those conditions. Our Mental Health Providers are highly trained to provide mental health care to all of our patients. Nephrology (All age's) Nephrology is a medical specialty focused on the diagnosis and treatment of diseases and disorders related to the kidneys and their associated systems. Nephrologists are Physicians who specialize in nephrology and our experts in managing conditions that affect kidney functions and overall renal health. Conditions treated under nephrology include: Chronic Kidney Disease (CKD) Acute Kidney Injury (AKI) Hypertension (High Blood Pressure) Glomerular Diseases Renal Tubular Disorders Kidney Stones Fluid and Electrolyte Disorders End-Stage Renal Disease (ESRD) Overall, Nephrology encompasses, the diagnosis, treatment, and management of a wide range of kidney related conditions, with the goal of preserving kidney function, improving quality of life, and releasing the risk of complications for patients with Renal Disease. Spravato and Depression Treatment Center (Age's 18+) Learn More At American Medical Associates, we also offer Spravato, a medication that is FDA-approved for the treatment of treatment-resistant depression. Spravato is an esketamine nasal spray that is administered in a medical setting and is used in conjunction with an oral antidepressant. Spravato is intended for use in patients who have not seen improvement from other treatments, such as antidepressants. Our team of mental health professionals will work with you to determine if Spravato is a suitable treatment option for you, and will monitor your progress throughout the course of treatment. We do not offer IV Ketamine because it is not FDA approved, unregulated and is not covered by any insurance plans. We offer Spravato treatments, es-Ketamine, which is a FDA approved and is covered by most insurance companies with prior authorization. Spravato comes in the form of a nasal spray and is used to treat Chronic Depression and Suicidal Ideations. It is a Controlled Substance and is treated under the strict supervision of Healthcare Providers. The results are life-changing for our patients. Child Psychiatry, also known as Pediatric Psychiatry, is a branch of psychiatry that specializes in the diagnosis, treatment, and prevention of mental health disorders in children and Adolescence. Child Psychiatrists are Medical Doctors who have completed further specialized training in Child and Adolescent Psychiatry, after medical school and residency. Psychiatry Services with MD (Age's 3+) Child Psychiatrist assess and treat of wide range of Mental health conditions that affect children and teenagers, but not limited to: Attention deficit/hyperactivity disorder (ADHD) Autism spectrum disorders (ASD) Anxiety disorders Depression Bipolar disorders Eating disorders Obsessive compulsive disorders (OCD) Post traumatic stress disorder (PTSD) Schizophrenia and other psychotic disorders Substance Use Disorders Initial Consultation (1 Hour) Follow Up Consultation (40 Minutes) Meet Our Providers Our MDs also work full time at local hospitals for Dignity Health and Banner Health System. With full privileges at Chandler Regional and Mercy Gilbert Hospitals, Dr. Nadir and Dr. Khan can directly admit patients into the hospital if that unfortunate need arises. We follow your care from outpatient to hospital and back in the clinic for hospital discharge follow up. CEO & CMO Ehreema Nadir, MD Chief Executive Officer (CEO) Start Now Hassan Khan, MD Chief Medical Officer (CMO) Start Now Internal Medicine Providers Colton Landrum Certified Physician Assistant Start Now Tanya Fetters FNP-C Start Now Psychiatric Providers Mental Health Providers Michael Zadakis PMHNP-BC Start Now Dr. Stephanie Leonard Clinical Psychologist Start Now

Experience the latest in depression treatment with Spravato at American Medical Associates. Our team of expert psychiatrists provide personalized care and support for individuals seeking relief from symptoms of depression. Book an appointment today. SPRAVATO® (esketamine) is the first and only NMDA receptor antagonist approved for 2 subtypes of MDD in adult patients SPRAVATO® is a prescription medicine, used along with an antidepressant taken by mouth to treat: Adults with treatment-resistant depression (TRD) Depressive symptoms in adults with major depressive disorder (MDD) with suicidal thoughts or actions SPRAVATO® is not for use as a medicine to prevent or relieve pain (anesthetic). It is not known if SPRAVATO® is safe or effective as an anesthetic medicine. It is not known if SPRAVATO® is safe and effective for use in preventing suicide or in reducing suicidal thoughts or actions. SPRAVATO® is not for use in place of hospitalization if your healthcare provider determines that hospitalization is needed, even if improvement is experienced after the first dose of SPRAVATO®. It is not known if SPRAVATO® is safe and effective in children. What is Spravato? INDICATIONS SPRAVATO® is indicated, in conjunction with an oral antidepressant, for the treatment of: Treatment-resistant depression (TRD) in adults Depressive symptoms in adults with major depressive disorder (MDD) with acute suicidal ideation or behavior Limitations Of Use The effectiveness of SPRAVATO in preventing suicide or in reducing suicidal ideation or behavior has not been demonstrated [see Clinical Studies]. Use of SPRAVATO does not preclude the need for hospitalization if clinically warranted, even if patients experience improvement after an initial dose of SPRAVATO. Healthcare providers may define the term “treatment-resistant depression” differently. In the SPRAVATO® clinical trials, treatment-resistant depression was diagnosed in adults who were struggling with major depressive disorder and had not responded adequately to at least two different antidepressants of adequate dose and duration in the current depressive episode. What is Treatment resistant depression? Our Spravato Team Our Spravato team is made up of two highly qualified and experienced healthcare professionals, a Nurse Practitioner (NP) and a Medical Assistant (MA), and other support staff. These individuals bring their unique expertise and skills to the table, providing our patients with the best possible care for their mental health needs. Our NP is a licensed and knowledgeable clinician who is skilled in diagnosing and treating mental health conditions, while the MA provides essential support and assistance to the NP, ensuring patients receive a seamless and personalized care experience. Together, our team of experts works tirelessly to provide the highest quality of care, delivered with compassion and a deep commitment to our patients' well-being. More About Spravato

Tanya Fetters FNP-C Learn More Colton Landrum Certified Physician Assistant Learn More CEO & CMO Ehreema Nadir, MD Chief Executive Officer (CEO) Learn More Hassan Khan, MD Chief Medical Officer (CMO) Learn More Internal Medicine Providers Meet Our Providers Our MDs also work full time at local hospitals for Dignity Health and Banner Health System. With full privileges at Chandler Regional and Mercy Gilbert Hospitals, Dr. Nadir and Dr. Khan can directly admit patients into the hospital if that unfortunate need arises. We follow your care from outpatient to hospital and back in the clinic for hospital discharge follow up. Psychiatric Providers Mental Health Providers Michael Zadakis PMHNP-BC Learn More Dr. Stephanie Leonard Clinical Psychologist Learn More

Previous Next Marie Brewer, FNP-C Family Nurse Practitioner Marie Brewer, FNP-C, epitomizes professional excellence as a family nurse practitioner with a robust educational and clinical background. An alumnus of Creighton University in Omaha, Nebraska, Ms. Brewer was distinguished with an athletic scholarship and procured a Bachelor of Arts in Corporate Communication, with a specialization in Public Relations. Her aspirations in the healthcare domain propelled her to acquire a Bachelor of Science in Nursing from Northern Kentucky University, where she graduated Magna Cum Laude in 2005. Further cementing her academic achievements, Ms. Brewer attained her Master of Science in Nursing with Summa Cum Laude distinction from The University of Phoenix in 2021. Her clinical journey commenced at St. Elizabeth’s Medical Center in Edgewood, Kentucky, where she specialized in orthopedics as a registered nurse. In 2008, Ms. Brewer relocated to Arizona, enhancing her clinical expertise in the Cardiovascular Intensive Care Unit at Banner Good Samaritan Medical Center, Phoenix. There, she delivered critical care to patients navigating the recovery process from cardiac events and surgeries. Recognizing a broader spectrum of patient care, she expanded her proficiency by contributing to both the Emergency Department and Intensive Care Unit. Her passion for knowledge transfer led her to mentor nursing and paramedic students, as well as to orient new staff members. Ms. Brewer holds certification through the American Academy of Nurse Practitioners and maintains an active membership with the Sigma Theta Tau National Honor Society, underscoring her commitment to nursing excellence. Ms. Brewer’s career trajectory evolved as she assumed the role of a Clinical Education Specialist for Emergency and Trauma services, an endeavor that garnered her a nomination for the prestigious March of Dimes 2015 Nurse of the Year in Education. In 2016, she rejoined direct patient care as a night shift charge nurse in the Intensive Care Unit with Dignity Health, reaffirming her dedication to patient-centric care. Prior to joining our team, Ms. Brewer honed her expertise at The Fitzmaurice Hand Institute, where she specialized in the management of a comprehensive array of acute and chronic upper extremity conditions. A native of Orange County, California, Ms. Brewer found her home in Arizona’s Valley of the Sun in 2007. Outside of her professional responsibilities, she is a devoted mother to two exceptional sons who infuse her life with vitality. An avid sports enthusiast with a love for the great outdoors, Ms. Brewer cherishes her time with friends and family, which remains integral to her personal well-being. Marie Brewer FNP-C

Previous Next Marion’s nursing career started in 2006. She has worked in the Emergency Department at various facilities in the East Valley for almost ten years and in Post Anesthesia Care Unit for eight years. She has cared for patients from all walks of life during their most vulnerable times. Marion earned her Master’s degree in Nursing with an emphasis on Psychiatry at Walden University. She has gained rewarding and relevant experience during her clinical rotations at various mental health facilities. She is fluent in Tagalog and is familiar with the Asian culture. Her professional membership includes Arizona Nurses Association and American Psychiatric Nurses Association. During her free time, Marion likes to spend time with her family and go on long drives. She also enjoys trying new places to eat and going on Target/Trader Joe’s run. Marion Crisostomo PMHNP-BC

Previous Next David is originally from Illinois and relocated to the Phoenix area in 2016. He holds a BSN from The University of St. Francis in IL. His MSN, with a concentration in education, was achieved at Grand Canyon University in 2020. David harbors a passion for education, considering it a fundamental component of healthcare for both patients and staff. In May 2023, he accomplished a significant milestone by receiving a Post Master's FNP degree from Grand Canyon University. During his studies, David undertook rotations in cardiology, endocrinology, and primary care medicine. He's now thrilled to commence his practice with AMA, dedicated to serving the community to the utmost of his ability. Before joining AMA, David accumulated vast experience as a pediatric ICU nurse for five years and also spent two years working with adult patients in a progressive care unit. This diverse professional background has equipped him to provide care for individuals from all walks of life. He's committed to offering his patients kind, compassionate, and holistic care, ensuring they feel they are receiving the best possible treatment. On the personal front, he's married to his wonderful wife and is the proud parent of twin daughters, whom David considers his greatest blessings. Leisure time is often spent with family, engaging in various activities, with a particular fondness for the outdoors. David Brennan FNP-C

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