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Meet Our Specialist

Dr. Clerk is the most trusted Sleep Specialist in The Bay Area! For Over 40 Years!

Alexander A. Clerk, M.D.

Care Philosophy 


      My goal is to provide the highest level of evidence-based care to promote the safety, welfare, and well-being of my patients and to provide specialist support to their primary-care physicians.


     I believe in personal, patient-centered care, in which patients take an active role in their health and health care.

     I pride myself on taking time to explain things thoroughly so patients can easily understand and comply with their treatment.

     I have found that the treatment of sleep disorders is particularly gratifying because of the vast improvement in the quality of life that many patients experience.

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Dr. Clerk has over 45 years of experience in the practice of clinical medicine in the private and academic sectors. He is a Diplomate of the American Board of Psychiatry and Neurology, Diplomate American Board of Sleep Medicine, and a Fellow of the American Academy of Sleep Medicine.

He is a graduate of the University of Ghana Medical School and also trained at Loma Linda University where he did a residency in psychiatry. He was an Attending Physician and also Director of the Outpatient Psychiatric Clinic at Loma Linda VA Hospital.

After Clinical and Research Fellowship training at Stanford University, he became Director of Stanford Sleep Disorders Clinic where he was also Clinical Associate Professor and Attending Physician. 

He is now retired from Stanford University but still works as Director of Sleep Medicine Services at O'Connor Health Center, in San Jose, CA. He has published many scientific articles and book chapters.

Dr. Clerk was educated at the University of Ghana, Loma Linda University School of Medicine, and Stanford University School of Medicine.

He was the 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.

Read more about Dr. Clerk on his Wikipedia page: 

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