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American Medical Associates (AMA)

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.

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.



Medicare and AHCCCS

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


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: 9:00am - 4:00pm


Sunday: Closed

Sonora Quest Lab in Chandler:
Mon, Wed, Thurs, Fri

Sonora Quest Lab in Maricopa:

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


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


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+)

Mental Health

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 |  Patient Care

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+)

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. 

Cash Pay 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):  $450.00 

Follow Up Consultation (40 Minutes):  $300.00 

Special Membership Pricing Available

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.


Ehreema Nadir, MD

Chief Executive Officer (CEO)

Hassan Khan, MD

Chief Medical Officer (CMO)

Internal Medicine Providers

Marie Brewer


David Brennan


Tanya Fetters


Psychiatric Providers

Marion Crisostomo


Brett Leifson



Dr. Stephanie Leonard

Clinical Psychologist

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