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 30 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. Munther Hijazin, MDNeurology Physician1952319253
  2. Elizabeth HilarioAmbulatory Care Registered Nurse1154855955
  3. Alexandra HillBehavior Technician1528629318
  4. Andrew HillPhysical Therapist1740108059
  5. Donald HillAddiction (Substance Use Disorder) Counselor1205527454
  6. Jason Hill, OTROccupational Therapist1407976541
  7. Alvenus HillisBehavior Technician1114699543
  8. Tymera Hines, MSBehavior Analyst1710314869
  9. Urmil Hingnikar, M.D.Anesthesiology Physician1427160522
  10. Danny HinojosaAddiction (Substance Use Disorder) Counselor1629205729
  11. Nancy Hinojosa Soberanis, CAADE 122220Addiction (Substance Use Disorder) Counselor1518371517
  12. Gary HipolitoSpecialist1861930877
  13. Josephine Ho, CTRSRecreation Therapist1609399773
  14. Sandy HoBehavior Technician1629692694
  15. Duong Ho-Hoang, D.O., M.ED.Child & Adolescent Psychiatry Physician1922364009
  16. Bich-Thuy Hoang, D.D.S.General Practice Dentistry1710003868
  17. Michael Hoffman, M.D.Diagnostic Radiology Physician1497713838
  18. La Nita HolderDay Training/Habilitation Specialist1922314426
  19. Tiffany HollowayBehavior Technician1871064691
  20. Alexandra HolmBehavior Technician1780155507
  21. Ulla Holmes, OTROccupational Therapist1780894683
  22. Charles Holzner, M.D.Endocrinology, Diabetes & Metabolism Physician1861439465
  23. Alexis HoneycuttBehavior Technician1740860758
  24. Annie HongBehavior Technician1598374464
  25. Daisy Hong, M.S., CCC-SLPSpeech-Language Pathologist1689384372
  26. Jong Hong, M.D.Anesthesiology Physician1447264973
  27. Kabsun Hong, D.D.S.General Practice Dentistry1114056801
  28. Laura HongBehavior Technician1326619867
  29. Regina HongBehavior Technician1932670759
  30. Sharlene Hong, PHARM.D.Pharmacist1700417607
  31. Jeffrey Honma, CPOProsthetist1366897043
  32. Serina Hoover, PSY.D.Rehabilitation Psychologist1013057231
  33. Tanya HopkinsBehavior Technician1982364519
  34. Kelsey Hopson-Shiller, LCSWClinical Social Worker1306478698
  35. Kristin Horn, DPTPhysical Therapist1194287698
  36. Darlene HortonAddiction (Substance Use Disorder) Counselor1295245058
  37. Mikayla HouseHealth & Wellness Coach1922987379
  38. Alireza Hoveyda, PTPediatric Physical Therapist1306043161
  39. Mikyle HowardBehavior Technician1063185171
  40. Kelly Hoy, ACSWSocial Worker1649098435
  41. Terrie HoyBehavior Technician1477024198
  42. Elisa Hsia, MDEndocrinology, Diabetes & Metabolism Physician1073711701
  43. Allyson HsiaoGeneral Practice Dentistry1437623691
  44. Angela Hsu, MDPain Medicine (Anesthesiology) Physician1790932010
  45. Diana Hsu, M.D.Internal Medicine Physician1720090137
  46. Goethe Hsu, M.D.Internal Medicine Physician1386656726
  47. Joseph Hsu, MDOphthalmology Physician1760584270
  48. Kevin Hsu, DOFamily Medicine Physician1225665391
  49. Linda Hsu, MDGeriatric Medicine (Internal Medicine) Physician1679682876
  50. Megan HuPhysical Therapist1760248785

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.