2026 data CMS NPPES NUCC Taxonomy

Doctors in Downey, CA

Compiled from official public sources by the PlainDoctor editorial team.

Active healthcare providers in Downey sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.

3,517
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Behavior Technician
Top specialty
751 providers
California
State
CA

3,517 healthcare providers across 20 specialties

Downey, California appears in the CMS National Plan and Provider Enumeration System with 3,517 registered healthcare providers spanning 20 distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Downey - 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 Downey 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 2023 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Downey is weighted toward Behavior Technician (751 clinicians, followed by Pharmacist with 244 and Physical Therapist with 154). 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, Downey reports roughly 9 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.

Within California, Downey ranks #58 of 805 cities tracked by provider count, accounting for 0.4% of the state's registered providers. Of California's most common specialties, Mental Health Counselor is the most prominent one with no provider currently listing a Downey practice address, a coverage gap Downey patients typically fill by traveling to a larger nearby hub.

For Downey patients, this directory is most useful as a starting shortlist, searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. 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, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.

3,517
Providers
20
Specialties
#58
of 805 CA cities
0.4%
of CA providers
9
Per 100K (state)

Which specialties are most common in Downey

Behavior Technician 751
Pharmacist 244
Physical Therapist 154
Addiction (Substance Use Disorder) Counselor 134
Internal Medicine Physician 113
Clinical Social Worker 111
Case Manager/Care Coordinator 94
Student in an Organized Health Care Education/Training Program 92
Family Nurse Practitioner 87
Marriage & Family Therapist 75
Occupational Therapist 74
General Practice Dentistry 69
Behavior Analyst 66
Dentist 65
Family Medicine Physician 60
Licensed Vocational Nurse 57
Community Health Worker 55
Speech-Language Pathologist 51
Physician Assistant 47
Health & Wellness Coach 37

Healthcare Providers (Page 3)

Name
Leonard Ambruso, LCSW
Clinical Social Worker
Kaley Amenero
Doula
Crystal Amezcua, BCBA
Behavior Analyst
Monica Amezcua
Behavior Technician
Fataneh Amidi, MD
Obstetrics & Gynecology Physician
Priyal Amin
Optician
Sameer Amin, MD
Internal Medicine Physician
Fariba Amini, RCP
Registered Respiratory Therapist
Maria Theresa Ammermann, NP
Family Nurse Practitioner
Ashkan Amooee, M.D.
Internal Medicine Physician
Jillyn Amoroso, OD
Optometrist
Emmanuel Amuchie, PSYCHIATRIC TECH.
Licensed Psychiatric Technician
Sneha Anantha, DMD
General Practice Dentistry
Jose Anaya
Addiction (Substance Use Disorder) Counselor
Paola Anaya
Behavior Technician
Darrell Andalon, D.D.S.
General Practice Dentistry
Orland Andaya
Registered Respiratory Therapist
Michelle Andersen, D.P.T.
Physical Therapist
Karla Andino, LVN
Licensed Vocational Nurse
Adriana Andrade
Student in an Organized Health Care Education/Training Program
Daisy Andrade
Community Health Worker
Guadalupe Andrade
Case Manager/Care Coordinator
Isabella Andrade
Health & Wellness Coach
Wendy Andreu
Family Nurse Practitioner
Deanida Andrews, RD
Registered Dietitian
Eric Andrews, R1507310523
Addiction (Substance Use Disorder) Counselor
Gail Andrews, LCSW
Clinical Social Worker
Kcassidy Andrews
Licensed Vocational Nurse
Muhammad Anees, M.D.
Internal Medicine Physician
Stephanie Angarita, M.D.
Surgery Physician
Jocelyn Anguiano
Health & Wellness Coach
Jose Anguiano, M.D.
Internal Medicine Physician
Nicole Ann Aniag, COTA/L
Occupational Therapy Assistant
Ifeoma Aniemeka
Nurse Practitioner
Cecilia Ann, NP
Family Nurse Practitioner
Fatimah Ansari, DDS
General Practice Dentistry
Joan Anukam, FNP
Family Nurse Practitioner
Melanie Aoki, PH.D.
Cognitive & Behavioral Psychologist
Diana Aparicio
Behavior Technician
Juan Aparicio
Behavior Technician
Frances Aponte, CRNA
Certified Registered Nurse Anesthetist
Anne Gail Apostol
Nurse Practitioner
Kallie Appleyard
Behavior Technician
Gwendolyne Aquije
Physical Therapist
Destiny Aquino
Behavior Technician
Kathia Aquino, ATC
Athletic Trainer
Rachel Aragon, NP
Nurse Practitioner
Michelle Arakaki
Occupational Therapist
Susan Arakaki, OTR/L
Physical Rehabilitation Occupational Therapist
Yamid Aramoni
Speech-Language Pathologist

Nearby Cities in California

Other California cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Downey, CA?
There are 3,517 registered healthcare providers in Downey, CA, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Downey?
The most common specialties in Downey are Behavior Technician, Pharmacist, Physical Therapist, Addiction (Substance Use Disorder) Counselor, Internal Medicine Physician. Behavior Technician has the most providers with 751.

Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.

Compiled from official public sources by the PlainDoctor editorial team.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-20.