About
Dr. Radha Lewis is a board-certified family physician with almost 25 years of experience. She grew up on Cape Cod and earned her undergraduate degree Magna Cum Laude from Harvard University, concentrating in Medical Ethics. She went on to earn her MD from Georgetown University School of Medicine. She then moved to California for a primary care residency at UCSF/Sutter Medical Center in Santa Rosa.
Dr. Lewis completed a Fellowship in Women's Health and Family Planning at the University of Southern California. She also holds a Master's degree in Clinical Research and Investigation from USC, which sharpened her critical reading of medical literature. Her specialties include family medicine, preventive medicine, and functional medicine, with a particular passion for women's health and long-term wellness optimization. She believes that understanding each patient's communication style, personal goals, and family background is essential to meaningful care. She holds hospital privileges at California Pacific Medical Center and MarinHealth Medical Center, and direct concierge access at UCSF and Stanford.
Education & Training
Undergraduate
Harvard University, BA Magna Cum Laude, Medical Ethics
Medical School
Georgetown University School of Medicine, MD
Residency
UCSF/Sutter Medical Center Santa Rosa, Residency in Primary Care
Fellowship
University of Southern California, Fellowship in Women's Health and Family Planning
Additional Training
University of Southern California, Master's degree in Clinical Research and Investigation
Certifications
Conditions Treated
Who is Dr. Lewis right for?
Dr. Lewis is a strong fit for adults and teenagers seeking a primary care physician who integrates both conventional and functional approaches. Women looking for a dedicated women's health focus will find her expertise in family planning and long-term wellness especially valuable. Patients managing chronic conditions benefit from her thorough, relationship-centered approach. Her panel of 150 patients means she can offer same-day appointments and extended visit times. Those with PPO insurance who want a physician with strong specialist connections across the Bay Area will feel well-supported.
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Frequently Asked Questions
Dr. Lewis treats a broad range of adult and adolescent health concerns. Her clinical focus includes chronic disease management, preventive care, and women's health. She also addresses functional medicine concerns such as hormonal imbalances, nutritional deficiencies, and long-term wellness optimization.
Yes, Dr. Lewis holds board certification in Family Medicine. She brings nearly 25 years of clinical experience to her practice in Mill Valley.
Dr. Lewis earned her MD from Georgetown University School of Medicine. She completed her primary care residency at UCSF/Sutter Medical Center in Santa Rosa. She then completed a Fellowship in Women's Health and Family Planning at the University of Southern California, where she also earned a Master's degree in Clinical Research and Investigation.
Dr. Lewis blends Western evidence-based medicine with functional and complementary approaches. She takes time to understand each patient's communication style, personal goals, and family background. This foundation shapes the care she delivers across preventive, chronic, and women's health needs.
Yes, Dr. Lewis cares for both adult and teenage patients. Her family medicine background supports a wide range of ages within those groups.
Dr. Lewis holds hospital privileges at California Pacific Medical Center and MarinHealth Medical Center. She also maintains direct concierge access at UCSF and Stanford, giving her patients strong connections to specialty care when needed.
Yes, functional medicine is a core part of Dr. Lewis's practice. She integrates this approach with conventional medicine to address root causes and support long-term wellness. She also offers nutrition counseling and health coaching as part of her clinical services.
Yes, Dr. Lewis provides expedited referrals through her professional network. Her connections span medical specialists and alternative health practitioners across San Francisco, Marin, and Sonoma Counties. Patients at UCSF and Stanford can access her direct concierge relationships at those institutions.
Doctor profile last updated March 21, 2026