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Our Providers

 

At Valley Sleep Center, we are the sleep experts and we are here to help you take control of your sleep health. Most insurance companies do not require a referral to meet with one of our Board Certified Sleep Physicians and providers.

If you are having sleeping problems, the first step would be to make an appointment for a sleep consultation to meet with one of our sleep physicians. At that time they will determine if a sleep study is necessary.

Click here to schedule an appointment or call 480-830-3900.

Wahaj Ahmed, M.D.

Medical Director; Mesa, Chandler

Dr. Ahmed is board certified in internal medicine, pulmonary disease, critical care medicine and sleep medicine. His practice encompasses all aspects of diagnosis and treatment of pulmonary and sleep disorders.

Maria Martinez, M.D.

Medical Director, Arrowhead

Dr. Maria Martinez is a pediatric pulmonologist in Phoenix, Arizona. She received her medical degree from Universidad de Navarra Faculty of Medicine and has been in practice for 31 years.

Najma Usmani, M.D.

Medical Director, Biltmore

Dr. Najma Usmani is a pulmonologist and specializes in sleep disorders. She also diagnoses and treats patients who suffer from respiratory or breathing problems such as asthma and COPD.

Janette Buhl, FNP-BC, CDE

Janette Buhl, FNP-BC, CDE, is a Family Nurse Practitioner who specializes in providing care for people with Obstructive Sleep Apnea and other sleep disorders. She is a graduate of Indiana Wesleyan University's cross cultural Masters of Community Health in Nursing and Family Nurse practitioner program in 1996. Undergraduate Bachelor of Science in Nursing was done at Roberts Wesleyan College in Rochester NY. Her health care experience has ranged from In-patient hospital care to rural Africa to out patient clinics in Michigan. As a Nurse Practitioner and Certified Diabetes Educator, she noted many of her patients' chronic health problems such as diabetes, high blood pressure and obesity were worsened by poor sleep so she focused on helping people with obstructive sleep apnea and sleep disorders. She brings experience in chronic disease management and education to help patients customize their plan for improving sleep health.

Michael Mohan, M.D

Dr. Mohan is a graduate of Yale University and Harvard Medical School. He went on to complete postgraduate medical training at Massachusetts General Hospital, Beth Israel Deaconess Medical Center, and Boston Children’s Hospital, some of the top-ranked hospitals in the world. He is one of the only physicians in Arizona to have received dedicated Fellowship training in Sleep Medicine, having completed Harvard’s Sleep Medicine Fellowship Training Program in 2016. He has authored journal articles, textbook chapters, and teaching materials on the subject of sleep disorders.

Samantha Lee, FNP-C

Samantha Lee, FNP-C, is a board certified family nurse practitioner. She has worked inpatient and outpatient from pediatrics to adults. She is currently working on obtaining her Doctorate of Nursing specializing in psychiatry and mental health.

Client Reviews
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"Great staff, they make you feel so at home. Every medical facility should be this nice. Felt like a nice hotel. Someone has great taste in decorating. Thanks for making us feel at home."


Steve N.


San Diego, CA

"I was especially impressed with Andrew the Respiratory Therapist who reviewed my study with me and answered my questions. Andrew thoroughly explained everything about the Cpap machine-from start to finish. I never felt rushed and was assured I could contact him with any additional questions or needs. Andrew told me he would follow up with a call in a week and he did. I believe this center performed the study appropriately and the added benefit of having Andrew teach me about the machine and what to expect was a bonus."


Candace M.


Scottsdale, AZ

"I recommend them highly!! I took my 2 year old daughter for a sleep study and was very impressed. Our sleep technician was amazing with her, very patient and kind. The DVD we brought to watch while getting her hooked up got stuck in the TV and they vowed to return it. We got a call the next day checking on our daughter and saying how sweet she was, they mentioned the DVD. Several days later, we received the DVD plus a new copy of the Lion King with a nice note. They are very good at what they do and if they can make a 2 year old feel at ease, they can probably do the same with anyone!!"


Anthea S.


Tempe, AZ