Providers
18
Locations
3
Specialties
4
Insurance Plans
7
About County Of Marin
Background and practice information
County of Marin is a mid-sized group medical practice based in Greenbrae, CA, with 18 affiliated healthcare providers practicing across 3 locations.
The practice brings together providers across multiple specialties, including psychiatry, nurse practitioner, marriage and family therapist, and clinical social worker. Its providers are in-network with 7 insurance plans, though coverage varies by individual provider and should be confirmed before scheduling.
Practice Locations
3 locations
County Of MarinPrimary
250 BON AIR RD, Greenbrae, CA 949041702
(415) 499-6835
Affiliations
Hospitals where providers at County Of Marin hold admitting privileges
Insurance Networks
Accepted insurance plans and networks
County Of Marin accepts 41 plans from 7 insurers, including Cigna, Aetna, Blue Shield of California.
Source: CMS Transparency in Coverage filings (March 2026). Network participation may change — verify with the provider's office before scheduling.
Specialties at County Of Marin
Provider specialties represented at this practice
Healthcare Providers in Greenbrae
14 providers practice here
Ngoc Loi, CSW
Clinical Social Worker
Greenbrae, CA
Hamaseh Kianfar
Marriage And Family Therapist
Greenbrae, CA
Michelle Ogle
Marriage And Family Therapist · Telehealth
Greenbrae, CA
Alexandra Siliezar
Marriage And Family Therapist
Greenbrae, CA
Marne Burgess, NP
Nurse Practitioner · Telehealth
Greenbrae, CA
Jennifer Echo, NP
Nurse Practitioner · Telehealth
Greenbrae, CA
Sara Moschetto, NP
Nurse Practitioner · Telehealth
Greenbrae, CA
Emma Olson, NP
Nurse Practitioner · Telehealth
Greenbrae, CA
Katharine Ballinger, MD
Psychiatry · Telehealth
Greenbrae, CA
Alec Chang, DO
Psychiatry
Greenbrae, CA
Michael Ciranni, MD
Psychiatry · Telehealth
Greenbrae, CA
Tara Collins, MD
Psychiatry · Telehealth
Greenbrae, CA
Rebeca Quezada, MD
Psychiatry · Telehealth
Greenbrae, CA
Amit Rajparia, MD
Psychiatry
Greenbrae, CA
Frequently Asked Questions
Common questions about County Of Marin
How many providers are at County of Marin?
County of Marin has 18 affiliated healthcare providers across 3 locations. You can browse the full provider roster, with specialties and locations, on this page.
What specialties does County of Marin offer?
The practice includes providers in psychiatry, nurse practitioner, marriage and family therapist, and clinical social worker. Use the specialty filter on the provider list to find a specific type of provider.
What insurance does County of Marin accept?
Providers at County of Marin are collectively in-network with 7 insurance plans. Acceptance varies by individual provider, so confirm your specific plan with the office before your visit.
Where is County of Marin located?
County of Marin's primary location is in Greenbrae, CA, with 2 additional locations listed on this page. See the contact section for the full address and phone number.
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