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 49 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. Natalie NunezBehavior Technician1861162703
  2. Tania Nunez, PTAPhysical Therapy Assistant1356829972
  3. Jocelin Nusaputri, MSN, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1881577112
  4. Sovanndara Ny, PHARM.D.Pharmacist1225596109
  5. May Nyein, MDInternal Medicine Physician1083740633
  6. Ian O'Keefe, DDSDentist1154156669
  7. Michele O'Leary, LCSWClinical Social Worker1447457601
  8. Elizabeth ObandoLicensed Vocational Nurse1932937042
  9. Jade ObenaBehavior Technician1922772292
  10. Ingrid OcampoBehavior Technician1376368175
  11. Jessica OceguedaBehavior Technician1487124426
  12. Ana OchoaBehavior Analyst1407406846
  13. Betsy Ochoa, OTR/LOccupational Therapist1508359530
  14. Dina OchoaOccupational Therapy Assistant1699298141
  15. Gregory Ochoa, M.D.General Practice Physician1386822245
  16. Karina OchoaCommunity Health Worker1689152126
  17. Lisette OchoaOccupational Therapy Assistant1033632591
  18. Jennifer OdrichBehavior Technician1386114338
  19. Kevin OeiFamily Medicine Physician1063816809
  20. Alon Ofir, DDSOrthodontics and Dentofacial Orthopedics Dentistry1881085934
  21. Anh OgasawaraPharmacist1417588286
  22. Denise Oh, BCBABehavior Analyst1003435686
  23. James Oh, LMFTMarriage & Family Therapist1851712251
  24. Johnny Oh, D.CChiropractor1649497819
  25. Maureen Ohara, PACPhysician Assistant1215019575
  26. Celia OjedaBehavior Technician1154918258
  27. Sushil Ojha, MDGastroenterology Physician1053377093
  28. Sungwon Ok, N.P.Family Nurse Practitioner1194167841
  29. Sandra Okada, OTR/LDriving and Community Mobility Occupational Therapist1750804639
  30. Christopher OlagueBehavior Technician1467922419
  31. Ingrid OlivaresHealth & Wellness Coach1700746872
  32. Stephanie OlivaresCase Manager/Care Coordinator1659051860
  33. Elba Olmedo, LCSWClinical Social Worker1134618218
  34. Karla Olvera San JuanBehavior Technician1578106340
  35. Victor Om, MOTOccupational Therapist1942722236
  36. Osagie OmoruyiPharmacist1578410148
  37. Ifeanyichukwu OnubahBehavior Technician1538887567
  38. Esther OpokuPhysician Assistant1881235968
  39. Dragos OpreaPhysical Therapist1134196264
  40. Chene OquinnCase Manager/Care Coordinator1346412640
  41. Andrea OrellanaBehavior Technician1144895525
  42. Martin Orens, MDEmergency Medicine Physician1356391544
  43. Kayla Orn, AABehavior Technician1538838263
  44. Carla Ornelas, RDRegistered Dietitian1295458586
  45. Luini OrnelasPhysical Rehabilitation Occupational Therapist1609302058
  46. Meghan OrnelasOccupational Therapist1124567920
  47. Caritia OrozcoPhysical Therapist1083990303
  48. Myra OrozcoCase Manager/Care Coordinator1992297352
  49. Armando Orozco Carrillo, NPPsychiatric/Mental Health Nurse Practitioner1770405227
  50. Julissa Orozco-BanuelosBehavior Technician1992349609

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.