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Specialists in San Francisco, CA

Browse 666 Specialist providers listed in NPPES with a practice address in San Francisco, California.

666 Healthcare Providers

How San Francisco compares with the U.S.

San Francisco has 80 Specialists per 100,000 residents, 4.4 times the U.S. rate of 18.

That is 666 active Specialists with a practice address in San Francisco, for a population of 830,235.

The California rate is 15 per 100,000 residents.

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.

68% of Specialists in San Francisco listed in the CMS Medicare file (19 of 28) accept Medicare assignment. That is lower than the California share of 92%.

Only 28 of 666 active Specialists in San Francisco 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.

46% of Specialists in San Francisco listed in the CMS Medicare file (13 of 28) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the California share of 29%.

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).

Specialist Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Specialist practitioners in San Francisco, CA

Source: CMS PECOS
PECOS Enrolled Specialists 39 In San Francisco, CA
Part B Lab & Imaging Eligible 47 Diagnostic Referrals
DME Ordering Eligible 51 Durable Medical Equipment
Home Health Agency Referrals 46 HHA Ordering Eligible
Showing 1โ€“20 of 666 providers
With recent CMS data first, then Aโ€“Z

Dr. Bernard S Alpert , MD

Specialist

Active NPI Status
45 Castro St, Suite 150, San Francisco, CA 941141010
Phone: 4156266644
NPI Identifier 1578680450
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Active NPI Status
709 Scott St, San Francisco, CA 941171614
Phone: 4156732576
NPI Identifier 1992921084
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Dr. Ari D Baron , MD

Specialist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2100 Webster Street Suite 225, San Francisco, CA 94115
Phone: 4159233012
NPI Identifier 1013086420
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Dr. Barry Camp Baron , MD

Specialist

Active NPI Status
2100 Webster St, #329, San Francisco, CA 941152373
Phone: 4159233882
NPI Identifier 1467563353
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Dr. Ulrich Berg , MD

Specialist

Active NPI Status Accepts Medicare Assignment
3022 Fillmore St, San Francisco, CA 941234010
Phone: 4153465633
NPI Identifier 1760400667
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Active NPI Status Accepts Medicare Assignment Telehealth Services Available
450 Stanyan Street, San Francisco, CA 941171079
Phone: 4157505890
NPI Identifier 1952479966
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Dr. Karen Callen , MD

Specialist

Active NPI Status Telehealth Services Available
1725 Montgomery St, Suite 200, San Francisco, CA 941111030
Phone: 4158312180
NPI Identifier 1952459349
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Active NPI Status
1520 Stockton Street, San Francisco, CA 941333354
Phone: 4153919686
NPI Identifier 1356417349
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Active NPI Status Accepts Medicare Assignment
2100 Webster St, Suite#328, San Francisco, CA 941152373
Phone: 4159233860
NPI Identifier 1790761336
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Dr. Carolyn S Cooper , MD

Specialist

Active NPI Status
2100 Webster St, Suite 302, San Francisco, CA 941152373
Phone: 4159233431
NPI Identifier 1518010560
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Active NPI Status
490 Post Street, #700, San Francisco, CA 94102
Phone: 4153622238
NPI Identifier 1821175878
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Active NPI Status
505 Parnassus Ave, San Francisco, CA 941432204
Phone: 4153537500
NPI Identifier 1972167385
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Dr. Anthony Defrance , MD

Specialist

Active NPI Status Accepts Medicare Assignment
325 Sacramento St, San Francisco, CA 941113601
Phone: 4157720908
NPI Identifier 1053361022
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Ayca Erkin-Cakmak , MPH

Specialist

Active NPI Status
502 16th Street, 4th Floor, San Francisco, CA 94143
Phone: 4125021485
NPI Identifier 1013378348
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Alyssa Estrada

Specialist

Active NPI Status
3609 Sacramento St, San Francisco, CA 941181709
Phone: 4152370377
NPI Identifier 1669031258
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Dr. Jane Fang , MD

Specialist

Active NPI Status Telehealth Services Available
1725 Montgomery St, Suite #200, San Francisco, CA 941111030
Phone: 4156661250
NPI Identifier 1487702882
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Dr. Frank J Farrell , MD

Specialist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2186 Geary Blvd, Suite 320, San Francisco, CA 941153455
Phone: 4157496900
NPI Identifier 1891770905
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Dr. Gary I Feldman , MD

Specialist

Active NPI Status
2300 California St, Suite 306, San Francisco, CA 941152753
Phone: 4152021550
NPI Identifier 1336220854
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Dr. Kathy A Fields , MD

Specialist

Active NPI Status
2100 Webster St, Suite 505, San Francisco, CA 941152373
Phone: 4159233377
NPI Identifier 1629103973
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Dr. Roger Lee Freed , MD

Specialist

Active NPI Status
3020 Fillmore St, San Francisco, CA 941234010
Phone: 4155678908
NPI Identifier 1154437200
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Frequently Asked Questions about Specialist in San Francisco

How do I check a Specialist practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.