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 13 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. Rebecca GuzmanCase Manager/Care Coordinator1184207185
  2. Beryl GwadaRegistered Nurse1134803604
  3. Diane HaPharmacist1447502174
  4. Tatyana HaddockMarriage & Family Therapist1962174334
  5. Nicole HairabedianBehavior Technician1902765258
  6. Lucy Halbasch, RDHAPDental Hygienist1043559933
  7. Derek HallAdult Psychiatric/Mental Health Registered Nurse1811703648
  8. Mackenzie HamblinBehavior Technician1003756800
  9. Dorina HamiltonStudent in an Organized Health Care Education/Training Program1336685114
  10. Sade HammondsBehavior Technician1609732734
  11. John HanPain Medicine Physician1174743603
  12. Mi Han, FNP. PMHNPPsychiatric/Mental Health Nurse Practitioner1174384606
  13. Peter Han, MSW/ LCSWSocial Worker1740722008
  14. Sarah Han, LVNLicensed Vocational Nurse1578832929
  15. Thein Han, M.D.Psychiatry Physician1760457808
  16. Young HanPhysical Therapy Assistant1194363739
  17. Ehab Hanna, M.D.Psychiatry Physician1972500403
  18. Nady Hanna Gerges, MDPsychiatry Physician1104873173
  19. Cheryl HanniganStudent in an Organized Health Care Education/Training Program1063163822
  20. Robyn HargeCase Manager/Care Coordinator1467173591
  21. Aditri HarishBehavior Technician1891650644
  22. Alise HarrisRegistered Nurse1194504233
  23. Ashley HarrisSpeech-Language Pathologist1437839305
  24. Trinity HarryBehavior Technician1396628806
  25. Kirk HartleyClinical Psychologist1336189687
  26. Amit Hasolkar, PHARM.D.Pharmacist1093686701
  27. Imran Hassan, M.D.Psychiatry Physician1902092695
  28. Julia Hastings, PT, DPTPhysical Therapist1528223872
  29. Melissa HatanakaMental Health Counselor1235318973
  30. Brooke HawkinsPeer Specialist1649143215
  31. Daniel Hawkins, LICENSED NURSELicensed Vocational Nurse1356232946
  32. Christopher Heckman, MDPsychiatry Physician1477585354
  33. Deborah HeffnerRehabilitation Practitioner1154782241
  34. Ashraf Helmy, M.D.Psychiatry Physician1790753234
  35. Jasmine HeluCommunity Health Worker1699166918
  36. Debbie Hendley, PSYDPsychologist1194055509
  37. Mary Henry, LPTOther Technician1942384268
  38. William Herbold, MDPsychiatry Physician1215983762
  39. Monique HerediaCase Manager/Care Coordinator1982285391
  40. Abigail Hernandez, M.SSpeech-Language Pathologist1003708140
  41. Arianna HernandezBehavior Technician1699230367
  42. Barbara Hernandez, LMFT, PSY. D.Marriage & Family Therapist1750619250
  43. Bernadino HernandezAddiction (Substance Use Disorder) Counselor1679958144
  44. Donabel HernandezAdult Psychiatric/Mental Health Registered Nurse1588492565
  45. Isabel HernandezCase Manager/Care Coordinator1689849846
  46. Laura HernandezBehavior Technician1396686291
  47. Perla HernandezLicensed Psychiatric Technician1730793563
  48. Rocio HernandezStudent in an Organized Health Care Education/Training Program1679466023
  49. Sarah HernandezBehavior Technician1780554220
  50. Tania HernandezStudent in an Organized Health Care Education/Training Program1548006505

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.