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 43 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. Riley MastersonBehavior Technician1427726058
  2. Christine Mata, DPTPhysical Therapist1043772429
  3. Rodolfo MataAddiction (Substance Use Disorder) Counselor1780441857
  4. Lauren Mathias, M.D.Rheumatology Physician1912361072
  5. Jennifer Matias, PHARM.D.Pharmacist1962539320
  6. Aya MatsudairaCertified Registered Nurse Anesthetist1629554506
  7. Zipporah Matsunaga, PHARMDPharmacist1336772045
  8. Denis Matsuoka, PHARMD.Pharmacist1801983499
  9. Dorothy Matsuoka, P.T.Physical Therapist1912025537
  10. Elizabeth Matthews, PT, DPTPhysical Therapist1548019250
  11. Cynthia Matthews-Mondragon, RN, FNP-BC, MSNFamily Nurse Practitioner1760546873
  12. Estefania Maurer SpakowskyInternal Medicine Physician1073910543
  13. Jamaica MayoBehavior Technician1881212983
  14. Tykies Mays, LVN #722599Licensed Vocational Nurse1083353734
  15. Rosa MazariegoClinical Social Worker1861641193
  16. Amitabha Mazumder, M.D.Hematology & Oncology Physician1881682318
  17. Ashley McAfee-GaryBehavior Technician1407526346
  18. John McAllister, DDSGeneral Practice Dentistry1891888673
  19. Gary McCaughan, M.D.Anesthesiology Physician1366456816
  20. Andrea McClendon, M.S., B.S.Community Health Worker1932435278
  21. Amy McCluskey, MDOphthalmology Physician1598813305
  22. Alicia McConnell Hatch, OTR/L, OTDOccupational Therapist1710744255
  23. Joan McCormac, PACPhysician Assistant1457556490
  24. Nikita McCoyBehavior Technician1184246662
  25. Emma McCulloughMarriage & Family Therapist1609481035
  26. Richard McDowell, RADTAddiction (Substance Use Disorder) Counselor1902472038
  27. Petra McFarlandBehavior Technician1831668003
  28. Kayla McKeever- WilsonBehavior Technician1851927636
  29. Steve McKenzieCase Manager/Care Coordinator1932341674
  30. Paul McKeonAddiction (Substance Use Disorder) Counselor1720712698
  31. Amy McKnight, LCSWClinical Social Worker1992235584
  32. Estel McMasterAddiction (Substance Use Disorder) Counselor1043040876
  33. Jeanne MedeirosPhysical Therapist1932325065
  34. Estefani MedinaBehavior Technician1104395912
  35. Patricia Medina, BS, IBCLC, CCELactation Consultant (Non-RN)1447508676
  36. Siria Medina, PHARMDPharmacist1427839075
  37. Vanessa MedranoStudent in an Organized Health Care Education/Training Program1043919871
  38. Elvia Medrano BoylesBehavior Technician1487200622
  39. Christina Meehan, BCBABehavior Analyst1730474941
  40. Sohrab Mehrgan, DDSGeneral Practice Dentistry1295867851
  41. Aalap MehtaInternal Medicine Physician1548837909
  42. Angel MejiaAddiction (Substance Use Disorder) Counselor1598545642
  43. Claudia Mejia, B.S.Case Manager/Care Coordinator1548404965
  44. David Mejia, PTAPhysical Therapy Assistant1225777345
  45. Elisa MejiaStudent in an Organized Health Care Education/Training Program1265356703
  46. Johnny Mejia, DPTPhysical Therapist1841897907
  47. Joseph Mejia, RCPCertified Respiratory Therapist1386127686
  48. Gloria Mejia SarabiaDay Training/Habilitation Specialist1073497830
  49. Maria Mejia-Perez, D.P.M.Foot & Ankle Surgery Podiatrist1558706804
  50. Elisabeth Mejias Correa, PHARMACY TECHNICIANPastoral Counselor1891480265

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.