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 28 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
- Frank SeitzSpecialist1588728505
- Clarissa Semeniuk, FNP-BCFamily Nurse Practitioner1598169187
- Sahara SempleStudent in an Organized Health Care Education/Training Program1932973401
- Grant Seo, PSY.D.Clinical Psychologist1740597780
- Torang Sepah, M.D.Psychiatry Physician1598901167
- Michelle Sepulveda, MAStudent in an Organized Health Care Education/Training Program1619530151
- Elizabeth Sequeira, MED, BCBABehavior Analyst1841602950
- John SerranoOccupational Therapy Assistant1326609132
- Lucy Serrano, FNP-CFamily Nurse Practitioner1750057204
- Melvina Session, M.S., BCBABehavior Analyst1588178826
- Alexandra Seymour, MS, LMFTMarriage & Family Therapist1124764162
- Anthony SeynosRehabilitation Practitioner1891327391
- Bhaviesh Shah, MDFamily Medicine Physician1215946504
- Rachitaben ShahPhysical Therapy Assistant1831070028
- Varun ShahiEmergency Medicine Physician1487017497
- Kaushal Sharma, MDPsychiatry Physician1295782266
- Willy Shea, DDSDentist1275813115
- Nicholas ShepardStudent in an Organized Health Care Education/Training Program1396099321
- Evan Sherin-JonesStudent in an Organized Health Care Education/Training Program1871211417
- Yong Shin, ACUPUNCTURISTAcupuncturist1942442561
- Nerissa Sibal, MDPsychiatry Physician1508834888
- Kayda SiengBehavior Technician1043187131
- Amberlyn Sierra, LCSWClinical Social Worker1184180143
- Greg SierraSpecialist1841442084
- Elizama SigalaCase Manager/Care Coordinator1588138689
- Ronda SilasSpecialist1386786085
- Anna Silva, MSW, LCSW, BCBAClinical Social Worker1568539849
- Susie SimSpecialist1538310156
- Amarpreet Singh, D.D.S.General Practice Dentistry1952518441
- Kimberly SiribanStudent in an Organized Health Care Education/Training Program1134861313
- Philip Skoretz, M.D.Psychiatry Physician1972777332
- Courtney SmithProfessional Counselor1972075448
- Katherine Smith, MDPediatrics Physician1467409441
- Kimberly Smith, PSYDClinical Neuropsychologist1366843161
- Lowell Smith, O.D.Optometrist1962545822
- Rita Smith, LVNLicensed Vocational Nurse1497044473
- Tylour SmithLicensed Vocational Nurse1316725724
- Connie Smith-WilliamsMental Health Counselor1437289634
- Fe Solmayor, M.DInternal Medicine Physician1922016377
- Brianna SongPhysician Assistant1598570954
- Veronica SoniLicensed Psychiatric Technician1871110379
- George Soohoo, DDSDentist1770722159
- Sandi SotoLicensed Psychiatric Technician1255604823
- Audrey SpencerBehavior Technician1588521207
- Katelyn Spohn, MS, CF-SLPSpeech-Language Pathologist1083535645
- Nathapet Srinivasan, M.D.Cardiovascular Disease Physician1316029853
- Jordan StampsClinical Social Worker1861984650
- Jacob Stein, PSY.D.Clinical Psychologist1508218355
- Jordana SteinbergCase Manager/Care Coordinator1386141547
- Lorenza StewartLicensed Psychiatric Technician1609231554
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.