About
Dr. Clifford Sewell earned his undergraduate degree in Biomedical and Electrical Engineering from Duke University. D. from the Medical College of Virginia. His internal medicine residency took place at California Pacific Medical Center in San Francisco.
Dr. Sewell began his work in concierge medicine 20 years ago in San Francisco, where he pioneered many of the best practices in compassionate, relationship-driven care. He specializes in internal and preventive medicine, treating everything from acute illness to complex chronic conditions. Physicians and hospital teams often call on him when multiple factors complicate a diagnosis. He fosters ongoing, unrestricted communication with each patient and partners with specialists across a broad network to ensure his patients receive the attention and time they need. His personal mission is to care for each patient's health and provide truly dedicated service.
Education & Training
Undergraduate
Duke University, B.S. Engineering (Biomedical & Electrical Engineering)
Medical School
Medical College of Virginia
Residency
Internal Medicine, California Pacific Medical Center, San Francisco
Additional Training
Georgetown University, M.S. Physiology & Biophysics
Conditions Treated
Who is Dr. Sewell right for?
Dr. Sewell is a strong fit for adults who want a physician deeply engaged in prevention and chronic disease management. Patients juggling complex diagnoses or multiple health conditions benefit from his root-cause approach. Those who value direct, ongoing access to their doctor will find his communication style reassuring. His expedited referral network also suits patients who need timely specialist access.
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Frequently Asked Questions
Dr. Sewell treats a wide range of adult conditions, from acute illness like the common cold to chronic diseases requiring long-term management. He specializes in internal and preventive medicine. He also takes on complex cases where multiple factors are at play, working to identify root causes rather than surface symptoms.
Dr. Sewell monitors each patient's health conditions proactively so they can stay ahead of the disease curve. He develops customized health plans tailored to each patient's health profile, work demands, and lifestyle. Prevention is the cornerstone of his clinical philosophy.
Dr. Sewell specializes in internal medicine and preventive medicine. He completed his internal medicine residency at California Pacific Medical Center in San Francisco and has practiced for over 20 years.
S. S. D. from the Medical College of Virginia. He completed his internal medicine residency at California Pacific Medical Center in San Francisco.
Dr. Sewell has focused on concierge medicine for over 20 years, beginning his work in San Francisco. He is recognized as a pioneer in the field. That experience shaped the best practices he applies to patient care at Claret Medical today.
Yes. Dr. Sewell maintains direct and prompt contact with his patients by phone and in person. He fosters ongoing, unrestricted communication and takes the time needed to listen and address each patient's individual concerns.
Yes. Dr. Sewell maintains professional relationships with private and academic specialists, as well as executive teams at UCSF, John Muir Medical Center, San Ramon Regional Hospital, Sutter Health, and Stanford. S.
Dr. Sewell approaches diagnosis as a combination of science, art, and experience. Physicians often call him in when multiple factors complicate a case. He works with patients to identify the root cause of their condition rather than treating isolated symptoms.
Doctor profile last updated June 6, 2026