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 4 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. Kathia Aquino, ATCAthletic Trainer1831989938
  2. Rachel Aragon, NPNurse Practitioner1285785725
  3. Michelle ArakakiOccupational Therapist1821789512
  4. Susan Arakaki, OTR/LPhysical Rehabilitation Occupational Therapist1750817169
  5. Yamid AramoniSpeech-Language Pathologist1386110096
  6. Ruby AraujoBehavior Technician1285396911
  7. Rory Arcadio, COTAPhysical Rehabilitation Occupational Therapist1508381849
  8. Edith Argueta, LCSWClinical Social Worker1235410978
  9. Manuel ArguetaCommunity Health Worker1659910776
  10. Karina Arias, LCSWClinical Social Worker1316207814
  11. Nancy Arias, OTROccupational Therapist1619797644
  12. Michelle Armacost, M.D.Neurology Physician1609136316
  13. Breanna ArmendarizBehavior Technician1184572489
  14. Kayla ArmstrongBehavior Technician1124627062
  15. Glenn Arnoco, FNPFamily Medicine Physician1629633391
  16. Christopher Arnold, RCPRegistered Respiratory Therapist1912482480
  17. David Arnold, DODermatology Physician1003311051
  18. Mary Adeliz ArominPhysical Therapist1508561655
  19. Vasudha Arora, MDPediatrics Physician1578765236
  20. Wendy ArredondoBehavior Technician1255802591
  21. Priscilla ArreygueBehavior Technician1619539327
  22. Jessica ArriagaBehavior Technician1821645003
  23. Alexa ArroyoBehavior Technician1811559271
  24. William ArvanitisPhysical Therapist1942620117
  25. Daniela ArvizuBehavior Technician1174289615
  26. Elizabeth ArzateCommunity Health Worker1144084708
  27. Paul Ascarate, PH.D.Clinical Psychologist1073694188
  28. Shant Ashdjian, M.D.Obstetrics & Gynecology Physician1841502457
  29. Song Ashikawa, MSW, LCSWClinical Social Worker1770664393
  30. Sana Ashraf, MDPediatric Cardiology Physician1316177215
  31. Azadeh Ashtiany, D.D.S.General Practice Dentistry1639508278
  32. Sophie-Chizoma Asogu-Nwosu, NURSE PRACTITIONERNurse Practitioner1538718598
  33. Janice Marie Astilla, AGNP-CAdult Health Nurse Practitioner1316593916
  34. Natalie AstonPhysical Therapist1962376657
  35. Azucena Ataiza, M.D.Legal Medicine1083781470
  36. Lily Atalla, M.D.Neurology Physician1811007172
  37. Marai Atanacio PalaciosLicensed Vocational Nurse1689378234
  38. Ronald Rea Atienza, C.R.N.ACertified Registered Nurse Anesthetist1316279938
  39. Michal Atkins, OT2772Occupational Therapist1750804738
  40. Rajeev Attam, MDGastroenterology Physician1184694309
  41. James Aubrey, PT, DPTPhysical Therapist1982295663
  42. Katherinne Aucaruri RodriguezClinical Social Worker1871044297
  43. Marlijah AugustBehavior Technician1528808185
  44. Samuel AugustinDay Training/Habilitation Specialist1083315733
  45. Shawntelle AugustineBehavior Technician1750961991
  46. Anna Erika AurePrimary Care Nurse Practitioner1609550771
  47. Dominic AvalosDay Training/Habilitation Specialist1740029685
  48. Patrick AvalosAddiction (Substance Use Disorder) Counselor1679411367
  49. Cindy Avery, SUDRC #15119Addiction (Substance Use Disorder) Counselor1548060486
  50. Jack AveryCase Manager/Care Coordinator1730325986

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.