NPPES file of Aug 9, 2026

Doctors and health care providers in Norwalk, CA

1,600 individual NPPES records list a practice address in Norwalk, 137th of 812 California cities. The largest group is behavior technician: 193, 12% of the city's records, against 18% across California. Page 19 of 32.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Norwalk in California

  • Rank in California137th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups24% of all records

Compared with California as a whole, Norwalk has 8.1× the state's share of licensed psychiatric technician records and 0.50× its share of addiction (substance use disorder) counselor records.

Providers in Norwalk, alphabetically

  1. Erika Mancilla, LMFTMarriage & Family Therapist1972637999
  2. Calli Manderino, BCBA 1-25-79520Behavior Analyst1144806571
  3. Socorro Hermelle Manzanilla, M.D.Psychiatry Physician1578505806
  4. Sergio ManzoSchool Social Worker1043184443
  5. Lin MaoGeneral Practice Registered Nurse1114435310
  6. Bridget MaravillaBehavior Technician1447103353
  7. Jaynee MarchPhysical Therapy Assistant1063954345
  8. Desiree MaresSocial Worker1508319641
  9. Patricia MarianoBehavior Technician1295691103
  10. David MarinBehavior Technician1104777374
  11. Joselyn MarinBehavior Technician1730005562
  12. Marlon MarinoRehabilitation Practitioner1932284361
  13. Maria MariscalSpeech-Language Assistant1629925011
  14. Justina MarjiSpeech-Language Pathologist1831042126
  15. Alvaro MarquezDay Training/Habilitation Specialist1427972934
  16. Angelica MarquezBehavior Technician1609615640
  17. Carlos Marquez, LVNLicensed Vocational Nurse1154554319
  18. Crystal MarquezCommunity Health Worker1932448750
  19. Miguel MarquezBehavior Technician1295696730
  20. Jennifer MartinMental Health Counselor1538544622
  21. Aileen MartinezSchool Social Worker1508746066
  22. Araceli MartinezAddiction (Substance Use Disorder) Counselor1962618660
  23. Brandon Martinez, LVNLicensed Vocational Nurse1679008346
  24. Cirilda Martinez, M.SMarriage & Family Therapist1780076737
  25. Eufrocino Martinez, M. D.Surgery Physician1891877056
  26. Flor MartinezBehavior Technician1326988163
  27. Idalmis Martinez, NPNurse Practitioner1104755743
  28. Lupita Martinez, MA, LMFTMarriage & Family Therapist1316330145
  29. Melissa MartinezStudent in an Organized Health Care Education/Training Program1528576311
  30. Michael Martinez, MFT TRAINEECounselor1780962886
  31. Geraldine MasinagPhysical Therapist1710375415
  32. Jusuf MasinoMassage Therapist1710798749
  33. Andria MataPeer Specialist1841830619
  34. William MauricioCounselor1104192244
  35. Kennethia MayersCase Manager/Care Coordinator1225867922
  36. Ronald MayewakiRehabilitation Practitioner1447409743
  37. Diana MayorgaStudent in an Organized Health Care Education/Training Program1922409572
  38. Michael McArthurLicensed Vocational Nurse1821503285
  39. Stacy McCall-Martin, MFTMarriage & Family Therapist1205964814
  40. Lydia McClainLicensed Psychiatric Technician1013259001
  41. Jeremie McFarlandPsychiatric/Mental Health Registered Nurse1295583342
  42. Mina McFarlandCounselor1477885051
  43. Michael McGavic, D.P.M.Foot & Ankle Surgery Podiatrist1033137427
  44. Heather McGovern, RDNRegistered Dietitian1487265070
  45. Levell McIntyreCase Manager/Care Coordinator1245766385
  46. Katie McKay, LCSWClinical Social Worker1093149064
  47. Korena McLaurinBehavior Technician1780427591
  48. Janai McNeilBehavior Technician1881558146
  49. Heleen Medina, BASocial Worker1588121388
  50. John MedinaDay Training/Habilitation Specialist1730261926

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

Norwalk, California appears in the CMS National Plan and Provider Enumeration System with 1,600 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 Norwalk - 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 Norwalk 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 Norwalk is weighted toward Behavior Technician (193 clinicians, followed by Case Manager/Care Coordinator with 105 and Student in an Organized Health Care Education/Training Program with 86). 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, Norwalk reports roughly 4.1 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, Behavior Analyst is the most prominent one with no provider currently listing a Norwalk practice address, a coverage gap Norwalk patients typically fill by traveling to a larger nearby hub.

For Norwalk 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 Norwalk, CA?

There are 1,600 registered healthcare providers in Norwalk, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Norwalk?

The most common specialties in Norwalk are Behavior Technician, Case Manager/Care Coordinator, Student in an Organized Health Care Education/Training Program, Clinical Social Worker, Marriage & Family Therapist. Behavior Technician has the most providers with 193.

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.