Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Healthcare Providers & Facilities in Sonoma, CA

Public healthcare directory of 396 individual practitioners and 109 healthcare facilities located in Sonoma, California.

396 Practitioners
109 Facilities
90 Specialties

Medical Specialties in Sonoma

Select a specialty to view practitioner listings, practice locations, and qualifications.

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All Specialties in Sonoma

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 85 more with at least one listed practitioner. Number of practitioners in brackets.

Chiropractic Providers

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Nursing Service Providers

Nursing Service Related Providers

Other Service Providers

Physician Assistants & Advanced Practice Nursing Providers

Podiatric Medicine & Surgery Service Providers

Respiratory, Developmental, Rehabilitative and Restorative Service Providers

Featured Healthcare Providers in Sonoma

Practitioner profiles in Sonoma, CA with recent CMS Medicare or Open Payments data.

Soonnam Kwon , NP

Nurse Practitioner

761 Sonoma Vista Dr, Sonoma, CA
Phone: 7075095040
NPI 1841679800

Janet Byrd , FNP-C

Nurse Practitioner - Family

19270 Highway 12, Sonoma, CA
Phone: 7079396070
NPI 1225438294

Steven Mickelson , PA

Physician Assistant

651 1st St W Ste L, Sonoma, CA
Phone: 4159270666
NPI 1477673804

Nasreen Taymuree

Physician Assistant

181 Andrieux St, Sonoma, CA
Phone: 7079389880
NPI 1316176431

Dr. Dena Marcus , DDS

Dentist

644 3rd St W, Sonoma, CA
Phone: 7079967775
NPI 1316145147

Dr. Neal Patel , DDS

Dentist - General Practice

548 3rd St W, Sonoma, CA
Phone: 7079383077
NPI 1508343757

Largest Cities in California

Other California cities with a full directory, by the number of active practitioners listed in NPPES.

How Sonoma compares with the U.S.

Compared with the U.S. as a whole, Sonoma has more Chiropractors (4.6x), clinicians in Family Medicine (4.0x) and clinicians in Dentist - General Practice (4.0x) per 100,000 residents.

Sonoma has 3,711 active clinicians per 100,000 residents, compared with 2,198 for the U.S.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

67% of clinicians in Sonoma listed in the CMS Medicare file (53 of 79) accept Medicare assignment. That is lower than the California share of 91%.

Only 79 of 396 active clinicians in Sonoma appear in the CMS Medicare file, so this share describes that smaller group.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

24% of clinicians in Sonoma listed in the CMS Medicare file (19 of 79) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the California share of 28%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Sonoma CMS Healthcare & Financial Disclosures

CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Sonoma, CA

Source: CMS public datasets

Healthcare operations in Sonoma, CA encompass 396 active individual practitioners and 109 registered medical facilities across 90 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Sonoma accounts for $8.2 Million across 77,783 prescription claims. 128 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.0 Million in payments reported by companies to 46 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $8.2M 77,783 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.0M 46 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 128 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $8.0M 97,384 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in Sonoma

Part B Lab & Imaging Eligible: 99
Durable Medical Equipment (DME): 105
Home Health Agency (HHA): 78
Source: CMS Order and Referring