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 18 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. Nicolas Dikio, MDObstetrics & Gynecology Physician1972611762
  2. Lyric Dill, PROBATION OFFICERCase Manager/Care Coordinator1891933925
  3. Thomas Dillon, DDSGeneral Practice Dentistry1538282470
  4. Daheem Din, IMFMental Health Counselor1265564447
  5. Hung Dinh, D.O.Internal Medicine Physician1386978914
  6. Monina Distor-Castro, RN, FNP-BCFamily Nurse Practitioner1528379690
  7. Leylah DixonLicensed Vocational Nurse1477022937
  8. Liene Marice Dizon, RNAmbulatory Care Registered Nurse1699584623
  9. Henry Do, M.D.Internal Medicine Physician1538115290
  10. Hoang-Anh DoPharmacist1326679051
  11. John-Khoa Do, D.O.Internal Medicine Physician1710908223
  12. Nancy DoPharmacist1831720739
  13. Stephanie DoPharmacist1215898614
  14. Suzanne Do, N.P.Nurse Practitioner1720110620
  15. Shawayne DockettBehavior Technician1609347830
  16. Kristen DoleAddiction (Substance Use Disorder) Counselor1689372633
  17. Alexandra DollaBehavior Analyst1538844121
  18. Heidi Dombish, OTR/LOccupational Therapist1891221446
  19. Leona Dombroske, PHARMDPharmacist1730272600
  20. Damaris DomenechGeneral Practice Dentistry1780801399
  21. Angela DominguezSocial Worker1235693409
  22. Brandon DominguezBehavior Analyst1083261036
  23. See Huen Charmaine Dominguez, RDNRegistered Dietitian1194496539
  24. Jorge Dominicis, DDSDentist1336833698
  25. Luis Dominicis, D.D.SGeneral Practice Dentistry1265559603
  26. Zita Dominicis, DDSGeneral Practice Dentistry1740647916
  27. Molly DonahueMarriage & Family Therapist1932083532
  28. Raul DonateSocial Worker1881428993
  29. Stephanie DonateLicensed Vocational Nurse1811884562
  30. Henry DongPharmacist1306477070
  31. Kimberly Dong, PHARMACISTPharmacist1982442307
  32. Charmaine Dorsey, MSW, LCSWClinical Social Worker1932638665
  33. Veronica DorseyBehavior Technician1689236333
  34. Latoya Dotch, LVNLicensed Vocational Nurse1134791114
  35. Geniene Dotson-GaryCase Manager/Care Coordinator1184868028
  36. Kathy DouglasAddiction (Substance Use Disorder) Counselor1326285776
  37. Manuel DourouxPharmacy Technician1114614708
  38. Lisa Dow, PH.D.Clinical Psychologist1396073052
  39. Arthur DowneyDay Training/Habilitation Specialist1093508335
  40. Mary Doyle JacobsonSpeech-Language Pathologist1366976789
  41. Jerica Drake, RCPCritical Care Certified Respiratory Therapist1790542314
  42. Sean Dreyer, MDPhysical Medicine & Rehabilitation Physician1538666292
  43. Daniel DuStudent in an Organized Health Care Education/Training Program1407658784
  44. Jeffrey DuCertified Respiratory Therapist1134654320
  45. Nikki Du, PHARM.D.Pharmacotherapy Pharmacist1003988031
  46. Yen Du, RPHPharmacist1396376224
  47. Becky DuarteClinical Social Worker1306646005
  48. Norma Duarte, RSLD, RCLDOptician1275197683
  49. Mark Dubin, M.D.Diagnostic Radiology Physician1700843240
  50. Tobin Dubuc, PT, DPTPhysical Therapist1801319835

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.