MarinHealth Primary Care

Primary Care • Sonoma, CA • Since 1952 • Multiple locations in North Bay; Sonoma location listed locations

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About

MarinHealth, a UCSF Health clinic network in the North Bay, provides primary and specialty care across Marin, Sonoma, and Napa counties. Key points: - MarinHealth Medical Network operates 125+ providers across 25 locations. - Joined with UCSF Health through a strategic alliance; many practices are part of UCSF Health. - Network offices span Marin, Sonoma, and Napa Counties, offering broad access to primary care and specialty services. - Alumni and talent data indicate significant collaboration with UCSF Health and other major health systems for staff and providers. If you’re specifically seeking MarinHealth Primary Care within the UCSF Health clinic ecosystem in Sonoma, this page confirms that MarinHealth operates primary care networks aligned with UCSF Health, with multiple locations in the North Bay region. For precise clinic locations in Sonoma and appointment details, you may want to visit the MarinHealth site’sLocations section or contact a local MarinHealth/UCFS Health primary care office.

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Clinic Type

Primary Care

Address

MarinHealth Primary Care – Sonoma

Phone

415-514-6000

Email

—

Opening Hours

Not published — contact the clinic to confirm hours.

Website

https://www.mymarinhealth.org/locations/primary-care-sonoma/

Telehealth

Available for remote visits via smartphone, tablet, or computer

Emergency Care

9-1-1 for life-threatening emergencies; on-call physician after hours

Services Offered

Primary Care
Telehealth
New Patient Registration
MyChart/Online Scheduling
Appointment scheduling
Patient forms
Care coordination
Preventive screenings
Annual wellness
On-call physician support

Technology & Equipment

MyChart
telehealth video appointments
online scheduling
MyChart app
care coordination tools

Team

MarinHealth Primary Care Physicians (Sonoma) — Primary Care Physicians

Insurance & Payment

—

Languages Spoken

English
Spanish

FAQs

What is a PCP?

The primary doctor who coordinates your overall health and care.

What Patients Say

Overall sentiment across review platforms: positive

Healthgrades: 4.5 out of 5 stars (51 reviews (for Dr. Brian Sebastian, a provider at the location))

Patients praise

Highly rated individual physicians known for being thorough, compassionate, and good listeners
Efficient care and accessibility for patients, including Medicare recipients
Appreciation for the clinic's connection to the broader UCSF Health system
Professional and knowledgeable medical staff

Common complaints

Isolated reports of poor office staff communication and responsiveness
Some patient concerns regarding billing and appointment scheduling delays
Occasional dissatisfaction with specific provider availability and responsiveness

"Dr Sebastian is both personal and professional. He thinks and discusses."

— Healthgrades reviewer regarding Dr. Brian Sebastian

"Dr. Sebastian has been my primary care physician for about 10 years... I trust him."

— Healthgrades reviewer regarding Dr. Brian Sebastian

"Absolutely disastrous client service. My provider left and I was rescheduled for 6 months later."

— Reviewer on Yelp (referenced via MapQuest)

Synthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].