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 2 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. Janet Ambriz, LMFTMarriage & Family Therapist1538564687
  2. Ranjan Amin, M.D.Psychiatry Physician1659301489
  3. Paul Ananias, D.O.Psychiatry Physician1043322803
  4. Justin Andersen, PHDClinical Psychologist1427462357
  5. Andre AndersonCounselor1023375979
  6. Christopher Anderson, MFTMarriage & Family Therapist1639200264
  7. Lafeyette Anderson, RDNRegistered Dietitian1972337764
  8. Isabella AndrienBehavior Technician1467336594
  9. Natalie Ang, OTROccupational Therapist1366471625
  10. Violeta Anorico, MDGeneral Practice Physician1063468478
  11. Sheryl Antido, MSN, FNP-CFamily Nurse Practitioner1013407519
  12. Roseangel AnyanwuPsychiatric/Mental Health Nurse Practitioner1801612809
  13. Litzy Anzaldo ParraBehavior Technician1114882974
  14. Mary AongoCounselor1982919247
  15. Fernanda ArandaStudent in an Organized Health Care Education/Training Program1396388898
  16. Janna ArandiaBehavior Technician1710843560
  17. Yahaira ArauzRehabilitation Practitioner1942933064
  18. Brianna ArechigaBehavior Technician1124587589
  19. Yuvitza Arellano, M.S., BCBABehavior Analyst1417455965
  20. Leticia ArenasCommunity Health Worker1346035995
  21. April Arentz, LVNLicensed Vocational Nurse1912567595
  22. Brittany ArevaloSpeech-Language Pathologist1851153787
  23. Kimberly Argil, LMFTMental Health Counselor1922693233
  24. Jasmin Arias PintoBehavior Technician1619844529
  25. Gilbert Arreola, LVNLicensed Vocational Nurse1548451206
  26. Meline ArzoumanianClinical Psychologist1427344944
  27. Anna ArzuyanClinical Neuropsychologist1093160079
  28. Harun Aslam, MDPsychiatry Physician1417903006
  29. Kibrom Asrat, D.P.MFoot & Ankle Surgery Podiatrist1447556204
  30. Berlyn AsturiDay Training/Habilitation Specialist1306721964
  31. Kristine AtayanBehavior Technician1851269161
  32. Ashraf AttaallaDriver1568111391
  33. Jennifer Auer, LCSWClinical Social Worker1366984759
  34. Carmen Avalos, MSWClinical Social Worker1215435540
  35. Juan AvalosBehavior Technician1073474714
  36. Rebecca Avena-Gonzales, MDPsychiatry Physician1487600045
  37. Ernestine AveryCase Manager/Care Coordinator1497819429
  38. Annette AvilaCase Manager/Care Coordinator1255067534
  39. Katelyn AvilaCase Manager/Care Coordinator1114542180
  40. Marcella Avina, PSYDClinical Psychologist1619514619
  41. Alfredo AyalaDentist1750641262
  42. Kristen AyalaAddiction (Substance Use Disorder) Counselor1255834966
  43. Henry AyesigaMarriage & Family Therapist1265236871
  44. Astian Ayoola, DOPsychiatry Physician1811518152
  45. Vinh Bach, MDGeneral Practice Physician1093751349
  46. Alexander Bacher, PSY.D.Mental Health Counselor1518180157
  47. Eung Bai, MDGeneral Practice Physician1962412536
  48. Aaron Baker, PSYDClinical Psychologist1306174420
  49. Madison BakerBehavior Technician1053262337
  50. Irene Ballesteros, APCCMental Health Counselor1942791637

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.