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.
The 8 largest groups in Norwalk
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
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
- Erika Mancilla, LMFTMarriage & Family Therapist1972637999
- Calli Manderino, BCBA 1-25-79520Behavior Analyst1144806571
- Socorro Hermelle Manzanilla, M.D.Psychiatry Physician1578505806
- Sergio ManzoSchool Social Worker1043184443
- Lin MaoGeneral Practice Registered Nurse1114435310
- Bridget MaravillaBehavior Technician1447103353
- Jaynee MarchPhysical Therapy Assistant1063954345
- Desiree MaresSocial Worker1508319641
- Patricia MarianoBehavior Technician1295691103
- David MarinBehavior Technician1104777374
- Joselyn MarinBehavior Technician1730005562
- Marlon MarinoRehabilitation Practitioner1932284361
- Maria MariscalSpeech-Language Assistant1629925011
- Justina MarjiSpeech-Language Pathologist1831042126
- Alvaro MarquezDay Training/Habilitation Specialist1427972934
- Angelica MarquezBehavior Technician1609615640
- Carlos Marquez, LVNLicensed Vocational Nurse1154554319
- Crystal MarquezCommunity Health Worker1932448750
- Miguel MarquezBehavior Technician1295696730
- Jennifer MartinMental Health Counselor1538544622
- Aileen MartinezSchool Social Worker1508746066
- Araceli MartinezAddiction (Substance Use Disorder) Counselor1962618660
- Brandon Martinez, LVNLicensed Vocational Nurse1679008346
- Cirilda Martinez, M.SMarriage & Family Therapist1780076737
- Eufrocino Martinez, M. D.Surgery Physician1891877056
- Flor MartinezBehavior Technician1326988163
- Idalmis Martinez, NPNurse Practitioner1104755743
- Lupita Martinez, MA, LMFTMarriage & Family Therapist1316330145
- Melissa MartinezStudent in an Organized Health Care Education/Training Program1528576311
- Michael Martinez, MFT TRAINEECounselor1780962886
- Geraldine MasinagPhysical Therapist1710375415
- Jusuf MasinoMassage Therapist1710798749
- Andria MataPeer Specialist1841830619
- William MauricioCounselor1104192244
- Kennethia MayersCase Manager/Care Coordinator1225867922
- Ronald MayewakiRehabilitation Practitioner1447409743
- Diana MayorgaStudent in an Organized Health Care Education/Training Program1922409572
- Michael McArthurLicensed Vocational Nurse1821503285
- Stacy McCall-Martin, MFTMarriage & Family Therapist1205964814
- Lydia McClainLicensed Psychiatric Technician1013259001
- Jeremie McFarlandPsychiatric/Mental Health Registered Nurse1295583342
- Mina McFarlandCounselor1477885051
- Michael McGavic, D.P.M.Foot & Ankle Surgery Podiatrist1033137427
- Heather McGovern, RDNRegistered Dietitian1487265070
- Levell McIntyreCase Manager/Care Coordinator1245766385
- Katie McKay, LCSWClinical Social Worker1093149064
- Korena McLaurinBehavior Technician1780427591
- Janai McNeilBehavior Technician1881558146
- Heleen Medina, BASocial Worker1588121388
- John MedinaDay Training/Habilitation Specialist1730261926
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
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.