Doctors and health care providers in Downey, CA
3,607 individual NPPES records list a practice address in Downey, 60th of 812 California cities. The largest group is behavior technician: 763, 21% of the city's records, against 18% across California. Page 48 of 73.
The 8 largest groups in Downey
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Downey in California
- Rank in California60th of 812 cities by records
- Share of the state0.4% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups32.4% of all records
Compared with California as a whole, Downey has 9.5× the state's share of ambulatory care registered nurse records and 0.38× its share of marriage & family therapist records.
Providers in Downey, alphabetically
- John NguyenLicensed Vocational Nurse1740410190
- Joyce Nguyen, NPFamily Nurse Practitioner1417536855
- Kate Nguyen, PHARM.DPharmacist1518243401
- Katie Nguyen, FNPNurse Practitioner1851839880
- Lani Nguyen, OTR/LOccupational Therapist1467042267
- Luong Ngoc Niki Nguyen, RCPCertified Respiratory Therapist1285249664
- Margaret NguyenOptometrist1831547009
- Michael Nguyen, DOAnesthesiology Physician1326036708
- Michael Nguyen, D.OAnesthesiology Physician1710901129
- Michelle Nguyen, DOStudent in an Organized Health Care Education/Training Program1710515788
- Milan Nguyen, R.PHPharmacist1609196492
- Minh Nguyen, RPHPharmacist1588483424
- Nga NguyenPharmacist1801417472
- Nina NguyenPharmacist1184163545
- Peter Nguyen, M.D.Critical Care Medicine (Internal Medicine) Physician1912387812
- Phu NguyenPharmacist1952097206
- Sarah NguyenPharmacist1104355932
- Selene NguyenStudent in an Organized Health Care Education/Training Program1740037654
- Thanh NguyenPharmacist1821689803
- Theresa Nguyen, PHARM DPharmacist1356625529
- Theresa Nguyen, LCSWClinical Social Worker1487055398
- Thuytien Nguyen, PHARM DPharmacist1316232267
- Tom Nguyen, PHARM.DPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1558831586
- Tony Nguyen, FNP-CFamily Nurse Practitioner1790151074
- Tri Nguyen, M.D.Anesthesiology Physician1982709606
- Tuyet Phuong Nguyen, NPFamily Nurse Practitioner1114877800
- Victoria Nguyen, DDSDentist1972724334
- Vivi Nguyen, DDSGeneral Practice Dentistry1275027161
- Vivian Nguyen, PHARM.D,Pharmacist1295274124
- Wendy Nguyen, PA-CMedical Physician Assistant1508249962
- Irene NhamPhysical Therapy Assistant1093239535
- Jenna NicholsStudent in an Organized Health Care Education/Training Program1023932506
- Joi NicholsCase Manager/Care Coordinator1003050329
- Jessika NickersonBehavior Technician1639649346
- Mary Nieraeth, RDRegistered Dietitian1881045870
- Bhoomin Nimitsilpa, MDInternal Medicine Physician1235206103
- Lizabeth NinoMarriage & Family Therapist1467602417
- Julie NivelaLicensed Psychiatric Technician1609205384
- Helen NjokuNurse Practitioner1528692217
- James Noe, DDSDentist1558424481
- Carrie Nofziger, PTA, B.AGeriatric Physical Therapist1649835307
- Reymon NolanDay Training/Habilitation Specialist1336091917
- Behnaz Nonahal, D.D.S.Dentist1396813572
- Elizabeth Norheim, M.D.Orthopaedic Surgery of the Spine Physician1043455611
- Maria Novotny, O.T.Occupational Therapist1669713251
- Carmina NunezBehavior Technician1174093173
- Fernando Nunez, CPProsthetics Case Management1023178803
- Flor Nunez, DDSDentist1063985158
- Hijinio NunezProsthetics Case Management1588960348
- Melissa NunezBehavior Technician1710651997
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Downey, California appears in the CMS National Plan and Provider Enumeration System with 3,607 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 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 2024 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 (763 clinicians, followed by Pharmacist with 248 and Physical Therapist with 159). 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 9.3 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, 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. 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 Downey, CA?
There are 3,607 registered healthcare providers in Downey, CA, covering 25 or more 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, Clinical Social Worker. Behavior Technician has the most providers with 763.
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.