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 17 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. Megan DegregoriRegistered Dietitian1922345966
  2. Jeannine DeharaLicensed Psychiatric Technician1851067698
  3. Alejandro Del Cerro, SURGICAL ASSISTANTSurgical Assistant1346787959
  4. Rachel Del PinoDoula1194653709
  5. Lance Del RosarioAmbulatory Care Registered Nurse1124558663
  6. Jessica Del ToroBehavior Technician1205425691
  7. Jazmin Del ValCase Manager/Care Coordinator1427649516
  8. Arjay Dela Cruz, RNAmbulatory Care Registered Nurse1790594729
  9. Nelson Delacruz, D.D.S.General Practice Dentistry1053388173
  10. Stephanie DelacruzBehavior Technician1952949281
  11. Mark DelatorreCertified Respiratory Therapist1669955969
  12. Janelle DelfinBehavior Technician1891354957
  13. Adrian DelgadoBehavior Technician1144790817
  14. Dawn Delgado, LMFTMarriage & Family Therapist1265550719
  15. Monica DelgadoAddiction (Substance Use Disorder) Counselor1295311702
  16. Avril Delgardo, AGACNPAcute Care Nurse Practitioner1275146219
  17. Daniel Delhoyotorres, BTBehavior Technician1245877927
  18. Janet Delrosario, RCPRegistered Respiratory Therapist1265046189
  19. Sandy DemianMarriage & Family Therapist1023681939
  20. Kristine Demirchyan, P.T.Physical Therapist1528277860
  21. Susan Demsey, M.S, C.G.CGenetic Counselor (M.S.)1457413122
  22. Dawnte DennisBehavior Technician1174093843
  23. Hemaxi Desai, DOObstetrics & Gynecology Physician1205566171
  24. Rashmi Desai, M.D.Internal Medicine Physician1801990247
  25. Anika DesarGeneral Practice Dentistry1568148799
  26. Lisa Deshaies, OTR/L, CHTOccupational Therapist1841728433
  27. Taylor DesienaBehavior Technician1780268276
  28. Ryan DevellesRegistered Nurse1306222567
  29. Jason DeveraBehavior Technician1225643372
  30. Mary Devoy, RD, CDERegistered Dietitian1568657518
  31. Jaspreet Dhaliwal, MBBS,MDInternal Medicine Physician1710306139
  32. Kevin Dholaria, M.D.Gastroenterology Physician1629343736
  33. Genevieve DialloBehavior Technician1932679610
  34. Andre DiazBehavior Technician1811753213
  35. Barbara DiazBehavior Technician1932729100
  36. Denise DiazBehavior Technician1578115556
  37. Jazmin DiazBehavior Technician1629670294
  38. Jennifer DiazBehavior Technician1316417967
  39. Jose Diaz, M.DPediatrics Physician1427078781
  40. Joseph DiazBehavior Technician1013579499
  41. Julio DiazDay Training/Habilitation Specialist1053176131
  42. Julyana DiazBehavior Technician1356276380
  43. Marsela DiazBehavior Technician1205306859
  44. Ramon DiazRegistered Respiratory Therapist1740757533
  45. Xochilt DiazBehavior Technician1467159822
  46. Jesus Diaz GarciaPhysical Therapy Assistant1487311486
  47. Christopher Diaz-TorresBehavior Technician1982218707
  48. Claire Dicker, PT, DPTPhysical Therapist1447017991
  49. Darla DicksonDay Training/Habilitation Specialist1477382539
  50. John Diep, PHARM.D.Pharmacist1497132534

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.