2026 data CMS NPPES NUCC Taxonomy

Doctors in Downey, CA

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 42)

Name
Masina Masina
Addiction (Substance Use Disorder) Counselor
Monica Mason
Speech-Language Pathologist
T'Keya Mason
Behavior Technician
Nilcri Massey, RCP-RRT
Critical Care Registered Respiratory Therapist
Riley Masterson
Behavior Technician
Christine Mata, DPT
Physical Therapist
Rodolfo Mata
Addiction (Substance Use Disorder) Counselor
Lauren Mathias, M.D.
Rheumatology Physician
Jennifer Matias, PHARM.D.
Pharmacist
Aya Matsudaira
Registered Nurse
Zipporah Matsunaga, PHARMD
Pharmacist
Denis Matsuoka, PHARMD.
Pharmacist
Dorothy Matsuoka, P.T.
Physical Therapist
Elizabeth Matthews, PT, DPT
Physical Therapist
Cynthia Matthews-Mondragon, RN, FNP-BC, MSN
Family Nurse Practitioner
Estefania Maurer Spakowsky
Internal Medicine Physician
Jamaica Mayo
Behavior Technician
Tykies Mays, LVN #722599
Licensed Vocational Nurse
Rosa Mazariego
Clinical Social Worker
Amitabha Mazumder, M.D.
Specialist
Ashley McAfee-Gary
Behavior Technician
John McAllister, DDS
General Practice Dentistry
Gary McCaughan, M.D.
Anesthesiology Physician
Andrea McClendon, M.S., B.S.
Case Manager/Care Coordinator
Amy McCluskey, MD
Ophthalmology Physician
Alicia McConnell Hatch, OTR/L, OTD
Occupational Therapist
Joan McCormac, PAC
Physician Assistant
Nikita McCoy
Behavior Technician
Emma McCullough
Marriage & Family Therapist
Richard McDowell, RADT
Addiction (Substance Use Disorder) Counselor
Petra McFarland
Behavior Technician
Kayla McKeever- Wilson
Behavior Technician
Steve McKenzie
Case Manager/Care Coordinator
Paul McKeon
Addiction (Substance Use Disorder) Counselor
Amy McKnight, LCSW
Clinical Social Worker
Estel McMaster
Addiction (Substance Use Disorder) Counselor
Jeanne Medeiros
Physical Therapist
Estefani Medina
Behavior Technician
Patricia Medina, BS, IBCLC, CCE
Lactation Consultant (Non-RN)
Siria Medina, PHARMD
Pharmacist
Vanessa Medrano
Student in an Organized Health Care Education/Training Program
Elvia Medrano Boyles
Behavior Technician
Christina Meehan, BCBA
Behavior Analyst
Sohrab Mehrgan, DDS
General Practice Dentistry
Aalap Mehta
Internal Medicine Physician
Angel Mejia
Addiction (Substance Use Disorder) Counselor
Claudia Mejia, B.S.
Case Manager/Care Coordinator
David Mejia, PTA
Physical Therapy Assistant
Johnny Mejia, DPT
Physical Therapist
Joseph Mejia, RCP
Certified Respiratory Therapist

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 editorial process.

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.