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 70 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. Robert Waters, M.D.Orthopaedic Surgery Physician1538241237
  2. Brittany WatsonBehavior Technician1619518669
  3. Monique Watson, PHLEBOTOMISTPhlebotomy Technician1861323651
  4. Sean WatsonPhlebotomy Technician1790616597
  5. Victoria WeaverBehavior Technician1083227524
  6. Wayne Weber, MDObstetrics & Gynecology Physician1992896591
  7. Lauren Wedlow, PTPhysical Therapist1851514186
  8. Chen Jon Wei, PHARMDPharmacist1679244560
  9. Katherine Wei, MDDiagnostic Radiology Physician1639707557
  10. Yunfei Wei, MDHematology & Oncology Physician1801075684
  11. Steven Weiss, MDGastroenterology Physician1457569162
  12. Walt Weiss, PT, MPTPhysical Therapist1437672607
  13. Edna Dulce Weller - Fusco, COTAOccupational Therapy Assistant1922537893
  14. Siliang WenBehavior Technician1154903227
  15. Victor Weng, D.O.Internal Medicine Physician1972624435
  16. Megan WheelerBehavior Technician1043816853
  17. Bernard WhiteRegistered Respiratory Therapist1760960660
  18. Eavon WhiteBehavior Technician1114680998
  19. Terri WhiteCase Manager/Care Coordinator1356659312
  20. Phyllis Whitfield-ScurlockCase Manager/Care Coordinator1093018442
  21. Lynn Whittemore, LCSWClinical Social Worker1487852802
  22. Robert Wielenga, M.D.Family Medicine Physician1952469850
  23. David Wilcox, DDSDentist1538128426
  24. Janise Williams, BCBABehavior Analyst1396206934
  25. Kayana WilliamsMassage Therapist1659127488
  26. Laraba WilliamsClinical Social Worker1962635953
  27. Patricia WilliamsBehavior Technician1265044739
  28. Shaute Williams, NURSE PRACTITIONERFamily Nurse Practitioner1649711813
  29. Tierra WilliamsBehavior Technician1902471790
  30. Vickie Williams, BSPharmacist1871970467
  31. Keith Willis, PTPhysical Therapist1225151954
  32. Merissa Wilms, LVNLicensed Vocational Nurse1891674859
  33. Bill Wilson, PHARMDPharmacist1104791615
  34. Marilyn WilsonPhysical Therapy Assistant1205355575
  35. Valerie WilsonBehavior Technician1770125452
  36. Richard Winkelmann, D.O.Dermatology Physician1720427024
  37. Alex WinterGeneral Practice Dentistry1386873438
  38. Annalise WintzClinical Social Worker1417568122
  39. Rochelle WitzMarriage & Family Therapist1982568044
  40. David WohlmuthDiagnostic Radiology Physician1427016625
  41. Mark Wolfson, OTR/LOccupational Therapist1700312964
  42. Cheryl WolgamottPhysical Therapy Assistant1932661329
  43. David WongCase Manager/Care Coordinator1366677148
  44. Dennis WongInternal Medicine Physician1457455834
  45. Donna Wong, D.O.Family Medicine Physician1215953211
  46. Ellen Wong, MDNeurology Physician1417339607
  47. Jack Wong, PHARM DPharmacist1629609300
  48. Julianne WongBehavior Technician1033790837
  49. Norman Wong, O.D.Optometrist1912075672
  50. Richard Wong, M.D.Cardiovascular Disease Physician1871678755

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.