

Our Team


Aynur Okcay, M.D.
Dr Okcay completed a comprehensive Sleep Medicine Fellowship program at Mayo Clinic in Rochester, MN. The Center for Sleep Medicine at Mayo Clinic's campus in Minnesota is one of the largest sleep medicine facilities in the United States. She has extensive research background at Mayo Clinic focusing on cardiovascular aspect of sleep disordered breathing. Dr Okcay has published several papers and a book chapter and gave presentations in both USA and international Sleep Medicine Conferences. Having a Primary Care background, Dr Okcay realizes an inseparable relationship between healthy sleep and overall well-being. Dr Okcay listens closely to her patients to create a unique plan that will fit the individual patient's lifestyle and improve the quality of their sleep. She has special interest in Integrative/Functional Medicine so as to not only improve but also prevent health problems. She is originally from Turkiye; moved to USA as soon as she graduated from Medical School, and she completed all her advanced training in the USA for her residency and fellowship.


Sharon Bettinger, M.S., R.D., PA-C
Sharon completed her education in Physician Assistant studies with a Masters Degree at Midwestern University in Glendale, AZ. She also has her Bachelors Degree in Biology working with the Colorado Division of Wildlife while getting a Masters Degree in Nutritional Biochemistry. She is a Registered Dietitian who worked in both nutrition support and education at both Banner hospital and Mayo Clinic in Phoenix. As a Physician Assistant, she has been practicing primarily in Sleep Medicine in the beautiful Prescott area. She has a desire to provide integrative care in maximizing optimal sleep health for all patients.



Gregory Nelson, R.R.T.
Gregory Nelson is a Registered Respiratory Therapist specializing in CPAP and BiPAP. Gregory excels at providing his patients with the one-on-one care that enables them to be successful with their sleep therapy. Gregory also serves on the Board of Advisors for Pima Medical Institute. He has also hosted several classes for hospice nurses, teaching them about basic respiratory care relating to oxygen, and CPAP/BIPAP which has aided them with their continued education and patient care techniques. Gregory’s passion for patient care is what drives him to providing the most knowledgeable and personable one-on-one care. He strives to provide the best care possible at Arizona Sleep Center for many more years to come.