Meet Our Physicians

We work with leading physicians in the growing field of sleep medicine.

Once the sleep study is completed and the data is scored, the report is sent to one of our independent sleep specialists for review and interpretation.

If you do not have a physician to refer you for a sleep study or would like a consultation with a sleep specialist, we can refer you to one of our physicians.

Our Physicians

Read a brief bio for each physician on the right or click on their name for more information.

Chief Medical Officer

Our Chief Medical Officer leads the clinical operations and ensures the quality of our sleep testing and PAP therapy services.

Said Mostafavi, M.D., F.C.C.P., F.A.A.S.M.

Dr. Mostafavi is the founder and a board member of Advanced Sleep Medicine Services, Inc. Dr. Mostafavi is boarded in pulmonolgy and sleep medicine. He sees patients in his private practice in Century City. Please click the link above for a full bio.

Specialities: Sleep Disorders, Pulmonary and Intensive Care

Private Practice: Century City Medical Plaza, 2080 Century Park E # 1402, Los Angeles, CA 90067

Interpreting Physicians

Karen D. Cheng, M.D

Dr. Karen Cheng is board-certified in neurology and sleep medicine. Dr.Cheng is in private practice in Laguna Hills at the Saddleback Medical Tower and is a medical staff member of Saddleback Memorial Medical Center. Please click the link above for a full bio.

Specialities: Neurology, Sleep Disorders

Private Practice: 24411 Health Center Dr #530, Laguna Hills, CA 92653

Yurzul Dhanani, M.D, F.C.C.P.

Dr. Yurzul Dhanani is Board Certified in Internal Medicine, Pulmonary (Respiratory) Medicine and Critical Care Medicine. Dr. Dhanani specializes in the diagnosis and treatment of sleep disorders, in particular sleep apnea, and lung diseases. Please click the link above for a full bio.

Specialities: Sleep Disorders, Pulmonary and Intensive Care

Private Practice: 1275 E Latham Ave # C, Hemet, CA 92543

Babak Hakimisefat, D.O.

Dr. Hakimisefat is board certified in internal medicine, critical care, pulmonology and sleep medicine. He is currently in private practice at Consultants for Lung Disease in Burbank, CA. Please click the link above for a full bio.

Specialities: Critical Care, Pulmonology, Internal Medicine, Sleep Medicine

Private Practice: 201 S. Buena Vista St. Suite 440, Burbank, CA 91505

Shirisha Janumpally, M.D., A.B.P.N.

Dr. Shirisha Janumpally is a board-certified neurologist and sleep specialist. She has worked in both academic and community settings as a neurologist and sleep medicine specialist. Please click the link above for a full bio.

Specialities: Neurology, Sleep disorders

Young Ko, M.D.

Dr. Young Ko has been in private practice for over 30 years and is boarded in critical care, sleep medicine, pulmonology and sleep medicine and currently serves the communities of the Antelope Valley. Please click the link above for a full bio.

Specialities: Critical Care, Sleep Medicine, Pulmonology and Intensive Care

Private Practice: 44215 15th St W #303 Lancaster, CA 93534

Beth Lo, M.D., D.A.B.P.N.

Dr. Beth Lo is a board-certified neurologist and sleep specialist. She is in private practice, seeing patients with sleep disorders and neurological diseases in Newport Beach at Newport Doctors Medical Group. Please click the link above for a full bio.

Specialities: Sleep Medicine, Neurology

Private Practice: 401 Old Newport Blvd Ste 201, Newport Beach, CA 92663

Sheila Manhas, M.D.

Dr. Sheila Manhas is board certified in neurology and sleep medicine. Please click the link above for a full bio.

Specialities: Sleep Medicine, Neurology

Ramin Mehdian, M.D.

Dr. Mehdian is board certified in pulmonology, critical care and sleep medicine. He is in private practice in Newbury Park. Please click the link above for a full bio.

Specialities: Pulmonology, Critical Care, Sleep Medicine

Private Practice: 1000 Newbury Rd # 275, Newbury Park, CA 91320

Stuart Menn, M.D.

Dr. Stuart Menn is board certified in pulmonolgy, critical care and internal medicine. He is in private practice in Palm Springs. Please click the link above for a full bio.

Specialities: Sleep Medicine, Pulmonology, Internal Medicine

Private Practice: 555 E Tachevah Dr, Palm Springs, CA 92262

Deepti Chandran, M.D.

Dr. Deepti Chandran is boarded in sleep medicine and internal medicine. She has clinical interests in sleep disordered breathing, circadian rhythm disorders, and pediatric sleep disorders. Please click the link above for a full bio.

Specialities: Sleep Medicine, Internal Medicine