NPPES file of Aug 9, 2026

Doctors and health care providers in San Marcos, CA

1,985 individual NPPES records list a practice address in San Marcos, 113th of 812 California cities. The largest group is behavior technician: 553, 28% of the city's records, against 18% across California. Page 32 of 40.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Marcos in California

  • Rank in California113th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups37.8% of all records

Compared with California as a whole, San Marcos has 4.9× the state's share of school counselor records and 0.49× its share of case manager/care coordinator records.

Providers in San Marcos, alphabetically

  1. Bianca Rubin, MS BCBABehavior Analyst1558877654
  2. Haley Rubio, PA-CPhysician Assistant1598394371
  3. Joselynn RuizBehavior Analyst1649746538
  4. Michael Runge, PT, DPTPhysical Therapist1083172712
  5. Shaelyn RusnakStudent in an Organized Health Care Education/Training Program1740019330
  6. Marie Russell, MD.Internal Medicine Physician1609947449
  7. Mary Russell, FNPFamily Nurse Practitioner1265837025
  8. Cameron Rutters, DPTPhysical Therapist1336094549
  9. Weston Ryan, PT, DPTPhysical Therapist1861887150
  10. Afrooz SabouriPharmacist1457076556
  11. Nicole SachikCase Manager/Care Coordinator1376115386
  12. Czar Sacramento, P.A.Physician Assistant1316957061
  13. Bahar SadiqPharmacist1891963997
  14. Massara SaeedPharmacist1245821602
  15. Ariella SaenzBehavior Technician1457273401
  16. Genevieve Saeturn, PMHNPPsychiatric/Mental Health Nurse Practitioner1467826974
  17. Elizabeth Saez, FNPPrimary Care Nurse Practitioner1558819649
  18. Amy Sakaue, OTRPediatric Occupational Therapist1619575180
  19. Omar Salamanca, M.D.Family Medicine Physician1083000947
  20. Maricela Salas, RNRegistered Nurse1740575265
  21. Claudia Salazar, PA-SMedical Physician Assistant1649906108
  22. Roberto Salazar, D.D.SOral and Maxillofacial Surgery (Dentist)1063795797
  23. Armando SaldanaBehavior Technician1740151539
  24. Karina SaldivarBehavior Technician1427759380
  25. Farzaneh Salehi, NPFamily Medicine Physician1972311181
  26. Anamaria SalluceBehavior Technician1548072358
  27. Yasaman SamanianDentist1750125266
  28. Mary Sammer, R.D.Registered Dietitian1780900977
  29. Stephanie SamsBehavior Technician1912540253
  30. Julia SanabriaOccupational Therapy Assistant1376392910
  31. Aidan SanchezBehavior Technician1689353567
  32. Fabiola SanchezBehavior Analyst1881204725
  33. Gloria SanchezBehavior Technician1841995842
  34. Marissa SanchezCounselor1124971924
  35. Dayanna Sanchez GonzalezBehavior Technician1629602602
  36. Brenda Sanchez RamirezBehavior Technician1427885219
  37. Jessica SanneBehavior Technician1629880976
  38. Jennifer Santamaria, DPTPhysical Therapist1063978203
  39. Marcella Santamaria, LCSWClinical Social Worker1710281753
  40. Dalisha SantiagoBehavior Technician1740139484
  41. Michelle SantiagoClinical Social Worker1487281101
  42. Noemi Santiago AnacletoAddiction (Substance Use Disorder) Counselor1316657851
  43. Acrisma SantosAttendant Care Provider1831781814
  44. Bianca SantoyoAddiction (Substance Use Disorder) Counselor1770035057
  45. Lyla SarwaryStudent in an Organized Health Care Education/Training Program1376481127
  46. Geraldine SasugaBehavior Technician1548107741
  47. Madison SasugaBehavior Technician1588480412
  48. Patrick Savaiano, PSY.D.Clinical Psychologist1497154678
  49. Richard Scandlyn, DCChiropractor1922987239
  50. Brentin SchalmLicensed Vocational Nurse1568958494

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

San Marcos, California appears in the CMS National Plan and Provider Enumeration System with 1,985 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 Marcos - 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 Marcos 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 Marcos is weighted toward Behavior Technician (553 clinicians, followed by Marriage & Family Therapist with 101 and Pharmacist with 96). 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 Marcos reports roughly 5.1 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a San Marcos practice address, a coverage gap San Marcos patients typically fill by traveling to a larger nearby hub.

For San Marcos 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 Marcos, CA?

There are 1,985 registered healthcare providers in San Marcos, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in San Marcos?

The most common specialties in San Marcos are Behavior Technician, Marriage & Family Therapist, Pharmacist, Physical Therapist, Addiction (Substance Use Disorder) Counselor. Behavior Technician has the most providers with 553.

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.