North Bay Private Medicine
Quick Facts
| Practice Type | Concierge |
| Location | Mill Valley, San Francisco, Marin, Sonoma County |
| Doctors | Radha Lewis MD, Family Medicine |
| Year Founded | 2016 |
| Panel Size | 150 patients per doctor |
| Telehealth Type | Daily availability for telehealth or telephone visits |
| Housecalls | Yes |
| Telehealth Available | Yes |
About
At North Bay Private Medicine in Mill Valley, Dr. Radha Lewis delivers concierge primary care to adults and teenage patients. She has practiced concierge medicine in the Bay Area since 2016. Her panel stays at 150 patients, giving her the capacity to know each person deeply.
Dr. Lewis blends Western evidence-based medicine with functional and complementary approaches. She holds hospital privileges at California Pacific Medical Center and MarinHealth Medical Center, and maintains direct concierge access at UCSF and Stanford. Her professional network spans medical specialists and alternative health practitioners across San Francisco, Marin, and Sonoma Counties. Women's health, preventive medicine, and chronic disease management form the core of her clinical focus.
Details
Address
655 Redwood Hwy, #160, Mill Valley, CA 94941
Phone
(415) 500-6220Website
Visit websiteMembership Details
Two membership plans: Comprehensive Plan (flat annual fee, no additional visit fees; all in-person/telehealth visit charges submitted to insurance) and Traditional Plan (lower flat annual fee plus fee-for-service charges for visits). Out-of-network; complimentary claims submissions provided. Most members have PPO insurance and receive 40-80% reimbursement. Medicare and Medi-Cal not accepted.
Typical Appointment
45 minutes
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Frequently Asked Questions
North Bay Private Medicine offers two membership plans. The Comprehensive Plan charges a flat annual fee with no additional visit fees; the practice submits all in-person and telehealth visit charges directly to your insurance. The Traditional Plan carries a lower flat annual fee plus fee-for-service charges per visit, which the practice also submits to insurance on your behalf.
Most members carry PPO insurance and receive 40-80% reimbursement for covered services. The exact amount depends on your plan's out-of-network benefits. The practice submits claims on your behalf through Claim Assist, a third-party billing service. You receive reimbursement directly from your insurer by mail.
No. Dr. Lewis has opted out of Medicare and Medi-Cal. Members on those plans cannot seek reimbursement from either program for services at this practice.
Dr. Lewis caps her panel at 150 patients. That limit allows her to spend meaningful time with each person and remain genuinely accessible between visits.
Most appointments run 30-60 minutes. 5-2 hours. Dr. Lewis reviews your personal and family history in depth and coordinates with any specialists involved in your care.
Yes. Members have direct after-hours access to Dr. Lewis by cell phone for urgent needs. The practice also offers daily availability for telehealth and telephone visits through the Spruce Health app, a HIPAA-compliant communication platform.
Yes. Dr. Lewis makes house calls in San Francisco and Marin when her schedule allows. Depending on your membership plan, additional fees may apply for care provided outside the office.
If you are hospitalized in Marin County, Dr. Lewis communicates directly with all physicians and specialists involved in your care. She coordinates between specialists, provides regular updates to family members, and visits in person whenever possible. She also holds hospital privileges at California Pacific Medical Center and MarinHealth Medical Center, and maintains direct concierge access at UCSF and Stanford.
You can request a consultation through the North Bay Private Medicine website or by calling the office at 415-500-6220. The team will walk you through the membership options and help you choose the plan that fits your needs.
Yes. Dr. Lewis manages personalized supplement plans through Fullscript. Members receive a 10% discount on all orders, and supplements ship directly to their door.
Practice last updated March 21, 2026