NPPES file of Aug 9, 2026

Doctors and health care providers in Downey, CA

3,607 individual NPPES records list a practice address in Downey, 60th of 812 California cities. The largest group is behavior technician: 763, 21% of the city's records, against 18% across California. Page 10 of 73.

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

Downey in California

  • Rank in California60th of 812 cities by records
  • Share of the state0.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups32.4% of all records

Compared with California as a whole, Downey has 9.5× the state's share of ambulatory care registered nurse records and 0.38× its share of marriage & family therapist records.

Providers in Downey, alphabetically

  1. Kimberleen CapulongBehavior Technician1225612575
  2. Roy Caputo, M.D.Orthopaedic Hand Surgery Physician1003886029
  3. Jorge CaranAddiction (Substance Use Disorder) Counselor1972424745
  4. Marilee Carballo, M.D.Surgery Physician1033348578
  5. Maria CardenasBehavior Technician1588144208
  6. Robert CardenasBehavior Technician1285103168
  7. Samantha CardonaMassage Therapist1447825476
  8. Emelia Carino, P.T.Physical Therapist1558584169
  9. Magin Carino, P.T.Physical Therapist1720203243
  10. Cynthia CarlosDay Training/Habilitation Specialist1154157881
  11. Merrisa Carlson, NPWomen's Health Nurse Practitioner1720551237
  12. Stephani CarmonaAddiction (Substance Use Disorder) Counselor1295589588
  13. Sherie Carnegie, D OFamily Medicine Physician1821013772
  14. Tanaya CarrBehavior Technician1619525490
  15. Sandra Carr-RichardsonAddiction (Substance Use Disorder) Counselor1104538891
  16. Cynthia CarranzaBehavior Technician1750208815
  17. Mari Carranza, NP-CFamily Nurse Practitioner1689185043
  18. Arthur Carrasco, M.D.Internal Medicine Physician1588601595
  19. Maria Carrera, LMFT, DSWMarriage & Family Therapist1043685191
  20. Amber CarrilloSpeech-Language Assistant1235834474
  21. Ana CarrilloDental Hygienist1447889753
  22. Lizbeth CarrilloBehavior Technician1871199687
  23. Samantha Carrillo, ODOptometrist1194661942
  24. James Carroll, CPOOrthotist1720868003
  25. Lisa CarrollPhysical Therapist1336662998
  26. Roosevelt CarrollDay Training/Habilitation Specialist1669360186
  27. Brittney CarterAddiction (Substance Use Disorder) Counselor1740893429
  28. Mack CarterNeonatal/Pediatric Registered Respiratory Therapist1144087867
  29. Marcus CarterMental Health Counselor1669336418
  30. Yesenia Carvajal, RADTAddiction (Substance Use Disorder) Counselor1841003464
  31. Nancy CasasMarriage & Family Therapist1851940555
  32. Jennifer Casillas, LCSWClinical Social Worker1902429111
  33. Maxine CasillasBehavior Technician1922577816
  34. April CastanedaBehavior Technician1861087132
  35. Brenda CastanedaBehavior Technician1336712280
  36. Isabella CastanedaBehavior Technician1407650583
  37. Marlene Castaneda, OTROccupational Therapist1235622358
  38. Peter Castaneda, D.C.Occupational Health Chiropractor1750562815
  39. Veronica Castaneda, NURSE PRACTITIONERFamily Nurse Practitioner1164965596
  40. Marisa CastanonSocial Worker1083263156
  41. Vanessa CastelanBehavior Technician1073196408
  42. Anthony Castellanos, MA, LEPPsychologist1891538575
  43. Jessica CastellanosBehavior Technician1871062778
  44. Allison CastilloBehavior Technician1124597026
  45. Gregory Castillo, MD.Family Medicine Physician1700839917
  46. Nirheesi CastilloSocial Worker1386409134
  47. Shana CastilloBehavior Technician1558031526
  48. David CastorBehavior Analyst1811498033
  49. Alondra CastroSocial Worker1609394386
  50. Bonifacio CastroCertified Respiratory Therapist1417437906

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

Downey, California appears in the CMS National Plan and Provider Enumeration System with 3,607 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 Downey - 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 Downey 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 Downey is weighted toward Behavior Technician (763 clinicians, followed by Pharmacist with 248 and Physical Therapist with 159). 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, Downey reports roughly 9.3 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, Mental Health Counselor is the most prominent one with no provider currently listing a Downey practice address, a coverage gap Downey patients typically fill by traveling to a larger nearby hub.

For Downey 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 Downey, CA?

There are 3,607 registered healthcare providers in Downey, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Downey?

The most common specialties in Downey are Behavior Technician, Pharmacist, Physical Therapist, Addiction (Substance Use Disorder) Counselor, Clinical Social Worker. Behavior Technician has the most providers with 763.

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.