NPPES file of Aug 9, 2026

Doctors and health care providers in Concord, CA

9,328 individual NPPES records list a practice address in Concord, 15th of 812 California cities. The largest group is behavior technician: 6,287, 67% of the city's records, against 18% across California. Page 28 of 187.

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

Concord in California

  • Rank in California15th of 812 cities by records
  • Share of the state1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups74% of all records
  • Behavior Technician rank4th of the 10 California cities with the most

Compared with California as a whole, Concord has 3.8× the state's share of behavior technician records and 0.27× its share of pharmacist records.

Providers in Concord, alphabetically

  1. Ericka CastanedaBehavior Technician1316580350
  2. Guadalupe CastanedaSocial Worker1104565886
  3. Joshua John CastanedaBehavior Technician1700595709
  4. Yolanda CastanedaBehavior Technician1083395347
  5. Melody Castaneda FloresBehavior Technician1902735368
  6. Cameron CastanoBehavior Technician1578275681
  7. Michele Castano, RDRegistered Dietitian1407714975
  8. Yesenia CastanoBehavior Technician1437981719
  9. Violeta CastellanosBehavior Technician1437616992
  10. Brayan Castellanos GonzalezBehavior Technician1073314662
  11. Monica Castellanos-AmadorBehavior Technician1114881588
  12. Tina CastellonBehavior Technician1265296313
  13. Madison Casten, PHARMDPharmacist1295597979
  14. Christine CastillaBehavior Technician1255179610
  15. Margie CastillanoBehavior Technician1952038721
  16. Zoe CastillanosBehavior Technician1124998125
  17. Candelario Castillo, LCSWClinical Social Worker1730540782
  18. Christopher CastilloBehavior Technician1609436054
  19. Cindy CastilloBehavior Technician1184277121
  20. Jessica CastilloCase Manager/Care Coordinator1700649647
  21. Kevin CastilloBehavior Technician1558079764
  22. Mary Grace Castillo, PHYSICAL THERAPISTPhysical Therapist1447076575
  23. Santino CastilloBehavior Technician1205420692
  24. Vanessa Castillo, LCSWClinical Social Worker1720376700
  25. Deisy Castillo AvendanoBehavior Technician1689385023
  26. Lorena Castillo ChiesaStudent in an Organized Health Care Education/Training Program1467037440
  27. Lucas CastleStudent in an Organized Health Care Education/Training Program1336062967
  28. Kostandina Castrillo, LMFTMarriage & Family Therapist1356505242
  29. Abby CastroBehavior Technician1154907616
  30. America CastroBehavior Technician1952292187
  31. Angelica CastroBehavior Technician1730819251
  32. Gerardo Castro, D.D.S.Dentist1619068327
  33. Hazel CastroBehavior Technician1467232116
  34. Nicole CastroBehavior Technician1225743370
  35. Priscilla CastroBehavior Technician1376243428
  36. Tatiana CastroBehavior Technician1942817010
  37. April Castro NunezBehavior Technician1922736008
  38. Amber CaswellBehavior Technician1912617465
  39. Christine CatabayMarriage & Family Therapist1255528824
  40. Andrea CatalanBehavior Technician1538636683
  41. Nyah CatalfoBehavior Technician1194288498
  42. Isabella Catanzarite-MorrisBehavior Technician1831972223
  43. Dominic CatheyCounselor1407183007
  44. Caroline CatiponBehavior Technician1164200598
  45. Thomas Cattoi, LMFT PHDMental Health Counselor1356926117
  46. Elicia CaulderBehavior Technician1730012519
  47. Cynthia CauseyBehavior Technician1023841350
  48. Demetria Leticia CavaBehavior Technician1780469387
  49. Allison CavazosBehavior Technician1487339586
  50. Alysa CavittBehavior Technician1467278770

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

Concord, California appears in the CMS National Plan and Provider Enumeration System with 9,328 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 Concord - 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 Concord 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 Concord is weighted toward Behavior Technician (6,287 clinicians, followed by Behavior Analyst with 331 and Marriage & Family Therapist with 286). 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, Concord reports roughly 23.9 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, Internal Medicine Physician is the most prominent one with no provider currently listing a Concord practice address, a coverage gap Concord patients typically fill by traveling to a larger nearby hub.

For Concord 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 Concord, CA?

There are 9,328 registered healthcare providers in Concord, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Concord?

The most common specialties in Concord are Behavior Technician, Behavior Analyst, Marriage & Family Therapist, Mental Health Counselor, Counselor. Behavior Technician has the most providers with 6,287.

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.