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 18 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. Adriana LopezLicensed Vocational Nurse1386435840
  2. Brittany LopezSpeech-Language Assistant1427788942
  3. Diana Lopez, RNRegistered Nurse1407586381
  4. Francisca Lopez, RDADental Assistant1720570468
  5. Jessica Lopez, LCSWClinical Social Worker1639377906
  6. Julianna LopezBehavior Technician1174481279
  7. Marie LopezRehabilitation Practitioner1699903039
  8. Mayra LopezBehavior Technician1992657274
  9. Mia LopezBehavior Technician1497694228
  10. Robert LopezCommunity Health Worker1083489736
  11. Yanira LopezCommunity Health Worker1841470028
  12. Abigail Lopez PerezBehavior Technician1336009679
  13. Jennifer Lopez-HuntCase Manager/Care Coordinator1568008829
  14. Bonnie Louie-GriffithStudent in an Organized Health Care Education/Training Program1952590325
  15. Edward LoveCase Manager/Care Coordinator1841812476
  16. Tyree LoveSocial Worker1730560012
  17. James Lu, MDPsychiatry Physician1912160979
  18. Murni Lubis, MDPsychiatry Physician1508962572
  19. Montiela LucasCase Manager/Care Coordinator1457123572
  20. Sherri LugoRehabilitation Practitioner1528623014
  21. Diana Lujan, DOCTORPharmacist1972371326
  22. Gabriela LunaSpeech-Language Assistant1922878479
  23. Larissa LunaCase Manager/Care Coordinator1508632118
  24. Mercedes LunaAthletic Trainer1336799600
  25. Ryan Ly, PSY.D.Clinical Psychologist1326671652
  26. Kimberly Lyons, LMHCProfessional Counselor1215257316
  27. Melanie MaPharmacist1548581259
  28. Peter MaStudent in an Organized Health Care Education/Training Program1821639824
  29. Christine Mac, NPFamily Nurse Practitioner1104363720
  30. Diana MacedoSpeech-Language Assistant1619733508
  31. Kayley MachadoMental Health Counselor1770024234
  32. Rachelle Mack, LVNLicensed Vocational Nurse1679461222
  33. Amanda Madrid, LCSWClinical Social Worker1427441260
  34. Elizabeth MadrigalMental Health Counselor1053701532
  35. Vanessa Madrigal, MSWMental Health Counselor1659757920
  36. Anthony Magallanes, LVNLicensed Vocational Nurse1790429975
  37. Maritza MaganaBehavior Technician1235099912
  38. Hrak MagdesyanBehavior Technician1144170531
  39. Alec MagsombolBehavior Technician1396609632
  40. Elizabeth MainaLicensed Vocational Nurse1154975282
  41. Nency MaisuriaDentist1386400133
  42. Andrea MajorCommunity Health Worker1982038410
  43. Lauren MalanaBehavior Technician1578422820
  44. Jor-El MaligayaCase Manager/Care Coordinator1740973460
  45. Grace Maloy, LVNAddiction (Substance Use Disorder) Counselor1033376751
  46. Nikka Mamaid, RNRegistered Nurse1275339954
  47. Carolyn Manalac, RNRegistered Nurse1720812225
  48. Joselito ManaladPsychiatric/Mental Health Registered Nurse1356110555
  49. Ruth Mancao, RPTPhysical Therapist1538189006
  50. Ada MancillaRehabilitation Practitioner1386986370

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.