NPPES file of Aug 9, 2026

Doctors and health care providers in Fountain Valley, CA

2,190 individual NPPES records list a practice address in Fountain Valley, 99th of 812 California cities. The largest group is behavior technician: 207, 9% of the city's records, against 18% across California. Page 27 of 44.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Fountain Valley

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Fountain Valley in California

  • Rank in California99th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups20.6% of all records

Compared with California as a whole, Fountain Valley has 15.6× the state's share of other technician records and 0.31× its share of student in an organized health care education/training program records.

Providers in Fountain Valley, alphabetically

  1. Hanh NguyenOccupational Therapy Assistant1902660632
  2. Hannah NguyenBehavior Technician1164987434
  3. Hennie NguyenCommunity Health Worker1780482877
  4. Henry-Vu Nguyen, D.D.S.Dentist1356574511
  5. Hinh Nguyen, PAPhysician Assistant1255849865
  6. Hoa Nguyen, PHARMDPharmacist1437631215
  7. Hoa Huynh Nguyen, DDSGeneral Practice Dentistry1881823920
  8. Hoang Nguyen, M.D.Internal Medicine Physician1457329179
  9. Hoang Nguyen, M.D.Interventional Cardiology Physician1811164528
  10. Hogan Nguyen, PHARMDPharmacist1215568670
  11. Hung Nguyen, M.D.Anesthesiology Physician1245211762
  12. Huong Nguyen, B.C.B.A.Behavior Analyst1750867628
  13. Isabel Nguyen, PA-CPhysician Assistant1679082796
  14. Ivy Nguyen, MSWClinical Social Worker1700559671
  15. Jackie Nguyen, D.D.S.Dentist1669704961
  16. Jacqueline Nguyen, RPHPharmacist1518890672
  17. Jenni Nguyen, DDSGeneral Practice Dentistry1295816742
  18. Jimmy NguyenBehavior Analyst1194367730
  19. Julie Nguyen, RPHPharmacist1093253031
  20. Kaitlyn Nguyen, P.A.C.Medical Physician Assistant1043590250
  21. Kelly Nguyen, PHARMDPharmacist1821319724
  22. Kelly NguyenBehavior Technician1639634991
  23. Khoa NguyenPharmacy Technician1437857398
  24. Kiet Nguyen, PHARMDPharmacist1669244828
  25. Kimberly Nguyen, LCSWClinical Social Worker1912382953
  26. Kristin NguyenOrthodontics and Dentofacial Orthopedics Dentistry1356966972
  27. Lena Nguyen, DOObstetrics & Gynecology Physician1467741728
  28. Linh Dan Nguyen, M.D.Specialist1619932506
  29. Loc Nguyen, MDPlastic Surgery Physician1336201961
  30. Luong Nguyen, D.M.D.General Practice Dentistry1245417765
  31. Mai Nguyen, PHARM.DPharmacist1417001652
  32. Mai Phuong Nguyen, MDInternal Medicine Physician1265450266
  33. Maitien Nguyen, PHARM. DPharmacotherapy Pharmacist1154430833
  34. Michelle Nguyen, PHARM.DPharmacotherapy Pharmacist1508266008
  35. Mickey Nguyen, MDFamily Medicine Physician1831684737
  36. Minh Thuoc NguyenPharmacist1609197599
  37. Minh-Tri Nguyen, DMDDentist1245306349
  38. My Nguyen, PHARM.D.Pharmacist1023390820
  39. Myduyen Nguyen, MDPediatrics Physician1316939481
  40. Nancy Nguyen, PHD., LMFTMarriage & Family Therapist1184884405
  41. Natalie NguyenMental Health Counselor1255988085
  42. Ngocanh Nguyen, M.A., BCBABehavior Analyst1215325626
  43. Nguyen Nguyen, M.D.Internal Medicine Physician1447661889
  44. Patrick NguyenPhysician Assistant1063109197
  45. Paul Nguyen, BEHAVIOR TECHNICIANBehavior Technician1538649702
  46. Peter Nguyen, DOOtolaryngology/Facial Plastic Surgery Physician1538240734
  47. Peter Nguyen, ACSWMental Health Counselor1114120235
  48. Philip NguyenBehavior Analyst1720542194
  49. Phuc NguyenPharmacist1275961575
  50. Phuc Nguyen, BTHealth Information Specialist/Technologist1477096485

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

Fountain Valley, California appears in the CMS National Plan and Provider Enumeration System with 2,190 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 Fountain Valley - 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 Fountain Valley 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 Fountain Valley is weighted toward Behavior Technician (207 clinicians, followed by Pharmacist with 144 and Marriage & Family Therapist with 101). 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, Fountain Valley reports roughly 5.6 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Fountain Valley practice address, a coverage gap Fountain Valley patients typically fill by traveling to a larger nearby hub.

For Fountain Valley 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 Fountain Valley, CA?

There are 2,190 registered healthcare providers in Fountain Valley, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Fountain Valley?

The most common specialties in Fountain Valley are Behavior Technician, Pharmacist, Marriage & Family Therapist, Internal Medicine Physician, Other Technician. Behavior Technician has the most providers with 207.

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.