Doctors and health care providers in San Antonio, TX
37,749 individual NPPES records list a practice address in San Antonio, 2nd of 694 Texas cities. The largest group is behavior technician: 2,756, 7% of the city's records, against 6% across Texas. Page 111 of 755.
The 8 largest groups in San Antonio
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
San Antonio in Texas
- Rank in Texas2nd of 694 cities by records
- Share of the state8.8% of Texas's records
- Specialties present25 or more taxonomy codes
- Top three groups17.2% of all records
- Behavior Technician rank1st of the 10 Texas cities with the most
Compared with Texas as a whole, San Antonio has 4.8× the state's share of electroneurodiagnostic specialist/technologist records and 0.73× its share of family nurse practitioner records.
Providers in San Antonio, alphabetically
- Robert Castillo, DPMFoot & Ankle Surgery Podiatrist1497771166
- Ruth CastilloDoula1780923144
- Samantha CastilloBehavior Technician1639751878
- Sandra Castillo, LVNLicensed Vocational Nurse1669951547
- Tabitha Castillo, DPTPhysical Therapist1205517596
- Theresa Castillo, RPHPharmacist1619332699
- Tiffanie CastilloMental Health Counselor1043904238
- Valarie Castillo, BSN, RNRegistered Nurse1245158922
- Victor Castillo, PHD., MS., LCDCAddiction (Substance Use Disorder) Counselor1679954689
- Victoria CastilloBehavior Technician1679364186
- Yolanda CastilloHearing Instrument Specialist1386339190
- Zelvia CastilloSocial Worker1720925134
- Lizbet Castillo Gonzalez, FNP-CFamily Nurse Practitioner1215885199
- Blanca Castillo OchartElectroneurodiagnostic Specialist/Technologist1861848186
- Claudia Castillo Paredes, MDInfectious Disease Physician1801141387
- Leslie Castillo Sanchez, FNP-BCFamily Nurse Practitioner1164061297
- Giovanni Castillo-Gomez, LPCProfessional Counselor1164316758
- Edward Castillon, D.D.S.General Practice Dentistry1922150879
- Lisa Castle, CCC-SLPSpeech-Language Pathologist1871115725
- Scott CastleChiropractor1487289682
- Dolores CastorSpeech-Language Pathologist1295909356
- Jessica Castorena, RN, NPCritical Care Pediatric Nurse Practitioner1629220140
- Rosemary Castoreno, MDInternal Medicine Physician1225135957
- Mandy Castrillon, RNRegistered Nurse1396563318
- Alex CastroBehavior Technician1609765015
- Amy CastroSpeech-Language Assistant1891293312
- Anna Castro, FNPFamily Nurse Practitioner1841744315
- Caleb Castro, OTDOccupational Therapist1972276301
- Carmen CastroBehavior Technician1134801541
- Casey CastroRegistered Nurse1265269435
- Chelsea Castro, SLP-ASSISTANTSpeech-Language Assistant1366194417
- Christine Castro, OTRPediatric Occupational Therapist1477931590
- David Castro, MDPediatrics Physician1093702433
- Deborah CastroCounselor1518504539
- Emilia CastroBehavior Technician1063033538
- Esther Castro, LCSWClinical Social Worker1518471051
- Esther CastroPharmacy Technician1912596537
- Geraldine Castro, OTR/LOccupational Therapist1568642148
- Isaiah Castro, LMTMassage Therapist1053202671
- James Castro, LPCProfessional Counselor1730122979
- Janet CastroPharmacy Technician1154799880
- Jeremiah Castro, PTAPhysical Therapy Assistant1093182008
- Jesse Castro, LCDCAddiction (Substance Use Disorder) Counselor1265784573
- Josue Castro, LCSWMental Health Counselor1467316406
- Julia Castro, CGCGenetic Counselor (M.S.)1093405938
- Keyshawn Castro, BCBABehavior Analyst1629844394
- Kristen Castro, PA-CMedical Physician Assistant1194311852
- Lauryn Castro, SLPSpeech-Language Pathologist1760170666
- Liliana Castro, LVNLicensed Vocational Nurse1063912376
- Lisa Castro, NPNurse Practitioner1750755484
The largest Texas cities
- Houston61,221
- Dallas36,304
- Austin26,585
- Fort Worth15,511
- El Paso11,091
How to read this directory
San Antonio, Texas appears in the CMS National Plan and Provider Enumeration System with 37,749 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 Antonio - 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 Antonio 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 Antonio is weighted toward Behavior Technician (2,756 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,911 and Professional Counselor with 1,820). 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 Texas's population, San Antonio reports roughly 123.8 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.
For San Antonio 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 Antonio, TX?
There are 37,749 registered healthcare providers in San Antonio, TX, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in San Antonio?
The most common specialties in San Antonio are Behavior Technician, Student in an Organized Health Care Education/Training Program, Professional Counselor, Licensed Vocational Nurse, Pharmacist. Behavior Technician has the most providers with 2,756.
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.