Meet Our Specialist
Our physician is a board certified sleep specialist, dedicated to identifying and providing treatment recommendations for sleep disorders by working with patients and their referring physicians in treating sleep disorders.
Alexander A. Clerk, M.D.  
Dr. Clerk was educated at University of Ghana, Loma Linda University School of Medicine and Stanford University School of Medicine.
He was director of Stanford Sleep Disorders Clinic from 1990 to 1998. He is currently Director, Sleep Medicine Services at O'Connor Health Center, San Jose CA.
Dr. Clerk has offered outstanding service to the field of Sleep Medicine as a member of the Fellowship Training Committee of the American Academy of Sleep Medicine and through Research activities at Stanford Sleep Research Center. He has written numerous peer review articles, abstracts and book chapters. He continues to be active in patient care and research.

Bio in More Detail
Dr. Alexander Adu Clerk was born in Cape Coast, Ghana. His early training was at Osu, Bekwai, Achimota School, and then University of Ghana Medical School where he obtained his medical degree in 1975. After working as a medical officer at Effia-Nkwantah Hospital, Sekondi he left for the United States for further training in 1978. After completing the preliminary requirements he started a Residency (Registrar) in Psychiatry at Loma Linda University School of Medicine and completed in 1983. He was subsequently appointed Assistant Professor of Psychiatry, Lo ma Linda University School of Medicine and also served as Chief of the Mental Hygiene Clinic, Lo ma Linda Veteran Administration hospital from 1984 to 1989.
In 1989 Dr. Clerk went for further training at Stanford University School of Medicine where he completed a fellowship in Sleep Medicine in July 1990. He was once again appointed Assistant Professor of Psychiatry and rose through the ranks to become Director of the world’s first and most prestigious sleep clinic at Stanford University. He served in this capacity from 1990 to 1998. As Medical Director he was in charge of the clinical operations and also supervised the training of other medical specialist. Dr Clerk’s experience in training other medical specialists includes serving as a member of the Fellowship Training Committee of the American Academy of Sleep Medicine.
Dr. Clerk has two medical specialties and is currently board certified by the American Board of Psychiatry and Neurology, and by the American Board of Sleep Medicine. He has published numerous scientific articles, book chapters and abstracts. He has presented many lectures in the United States, Canada, Ivory Coast and Ghana. Despite his busy schedule in North America, Dr. Clerk has not forgotten his mother country Ghana. He is a founding member and Western Region Director of the Ghana Physicians and Surgeons Foundation based in New York City. The foundation works to promote specialist training and professional development in medicine, and related disciplines in Ghana.

Magazine Articles on Dr. Clerk
Ebony Vol. 47, No. 9 - 128 pages - Magazine - Full view
HEALTH AND FITNESS Alex A. Clerk, MD The Sleep Doctor A patient sleeps as Dr. Alex Adu Clerk, director of the Stanford University Sleep Disorders Clinic, checks high-tech equipment to which she and other patients are connected during ...
Ebony - Vol. 50, No. 9 - Magazine - Full view
Tracy M. Walton Jr., MD President / National Medical Association ... "People who sleep better, live longer," says Dr. Alex Clerk, director of the Sleep Disorder Center at Stanford University. Regular exercise and avoiding stimulants, ...
Jet - Vol. 92, No. 3 - 64 pages - Magazine - Full view
A Dr. Alex Clerk says that over time people can train themselves to awaken without an alarm clock. HEALTH Actively Focusing On A Wake-Up Time Dr. Alex Clerk, director of the Sleep Disorders Clinic at Stanford University in Stanford, CA,
Jet - Vol. 93, No. 14 - 64 pages - Magazine - Full view
HEALTH A Sleep expert Dr. Alex Clerk says drinking more coffee than usual and changes in a person's health could be a ... Dr. Alex Clerk, director of the Sleep Disorders Clinic at Stanford University in Stanford, CA, says that if you ...
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Hours of Operation

[Dr. Clerk's Office Hours:]
Monday to Friday
Closed for Lunch: 12pm to 1pm
9am to 5pm

[Clinic Hours:]
(For Overnight Sleep Study Only)
Monday to Saturday
8:15pm to 7am

[Contact Info:]

Phone: (408) 295-4532

Fax: (408) 295-4738

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