Doctors and health care providers in San Francisco, CA
38,143 individual NPPES records list a practice address in San Francisco, 3rd of 812 California cities. The largest group is students in training: 3,035, 8% of the city's records, against 4% across California. Page 95 of 763.
The 8 largest groups in San Francisco
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
San Francisco in California
- Rank in California3rd of 812 cities by records
- Share of the state3.9% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups19% of all records
- Students in training rank2nd of the 10 California cities with the most
Compared with California as a whole, San Francisco has 3.8× the state's share of community health worker records and 0.15× its share of behavior technician records.
Providers in San Francisco, alphabetically
- Shawn Casey, NBC-HWCHealth Educator1770104150
- Sheri Casey, PA-CPhysician Assistant1598274987
- Thomas Casey, MFTIMental Health Counselor1912130816
- Hercules Casian, PTPharmacy Technician1538655923
- Ernesto Casillas, M.D.Pulmonary Disease Physician1952832354
- Bartholomew Casimir, MFTIProfessional Counselor1164690558
- Sherylee CaspellanRegistered Nurse1396196614
- Mollie Casper, OTR/LOccupational Therapist1093564031
- Cecilia CasquinoCommunity Health Worker1386265908
- Marla Cass, MA, LMFTMarriage & Family Therapist1518411032
- Mary Cassel, MFTMarriage & Family Therapist1578767257
- Arianna Cassidy, MDObstetrics & Gynecology Physician1902268923
- June Cassidy, MFT, REATMarriage & Family Therapist1295227080
- Patrick CassidyCounselor1396173993
- Trisha Cassidy, LCSWSocial Worker1275606451
- Marca Cassity, IMFTMental Health Counselor1477803138
- Lydia Cassorla, M.D.Anesthesiology Physician1417904525
- Daniel Castagna, DDSDentist1235590050
- Alba Castaneda, LPCCProfessional Counselor1417478256
- Bleu CastanedaHealth Educator1699571570
- Glenda CastanedaLicensed Vocational Nurse1962122218
- Kathye Castaneda, M.S., CCC-SLPSpeech-Language Pathologist1407124308
- Mark CastanedaMarriage & Family Therapist1164831400
- Rebecca Castaneda, DDSProsthodontics1215134028
- Roxana CastanedaCommunity Health Worker1740661321
- Kelly Castel, B.A.Case Manager/Care Coordinator1871866079
- Angel Castelan-ValladaresDay Training/Habilitation Specialist1922966274
- Christina Castelein, RN, MSNFamily Nurse Practitioner1952712481
- Cristian CastellanosAddiction (Substance Use Disorder) Counselor1952966616
- Erick Castellanos, MDAnesthesiology Physician1619617362
- Erika CastellanosCommunity Health Worker1578243168
- Ivonne CastellanosFamily Nurse Practitioner1467210104
- Jessica CastellanosCommunity Health Worker1003308875
- Maria Castellanos, M.D.Pediatrics Physician1881013795
- Mia CastellanosBehavior Technician1548135163
- Nykole CastellanosPeer Specialist1336963107
- Gabriela Castellanos RumboCommunity Health Worker1053123307
- Claudia Castellanos-HudginsStudent in an Organized Health Care Education/Training Program1093201857
- Amelia CastelliSpecialist1700208790
- Donna Castelli, M.S.Marriage & Family Therapist1508924960
- John CastelliSpecialist1598187585
- Mafe Castigador, LVNLicensed Practical Nurse1215735477
- Cecelia Castignani, LEPPsychologist1194406439
- Shelby Castile, MFTMarriage & Family Therapist1043410889
- Ana Castillo, LCSWClinical Social Worker1124365465
- Brittany CastilloOccupational Therapist1427607175
- Caroline Castillo, M.D.Family Medicine Physician1114217742
- Danielle CastilloBehavior Technician1801398755
- Deyanira CastilloBehavior Technician1154970523
- Elizabeth CastilloCase Manager/Care Coordinator1831574318
The largest California cities
- Los Angeles69,537
- San Diego52,937
- Sacramento33,083
- San Jose20,925
- Fresno19,440
How to read this directory
San Francisco, California appears in the CMS National Plan and Provider Enumeration System with 38,143 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in San Francisco - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a San Francisco practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.
The provider mix in San Francisco is weighted toward Student in an Organized Health Care Education/Training Program (3,035 clinicians, followed by Marriage & Family Therapist with 2,542 and Community Health Worker with 1,674). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to California's population, San Francisco reports roughly 97.9 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.
Of California's most common specialties, Behavior Analyst is the most prominent one with no provider currently listing a San Francisco practice address, a coverage gap San Francisco patients typically fill by traveling to a larger nearby hub.
For San Francisco patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.
For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.
Common questions
How many doctors are in San Francisco, CA?
There are 38,143 registered healthcare providers in San Francisco, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in San Francisco?
The most common specialties in San Francisco are Student in an Organized Health Care Education/Training Program, Marriage & Family Therapist, Community Health Worker, Counselor, Clinical Social Worker. Student in an Organized Health Care Education/Training Program has the most providers with 3,035.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.