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 40 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. Andy Truong, M.D.Internal Medicine Physician1174583033
  2. Anh Truong, D.M.D.Dentist1063638757
  3. Anh -Thu Truong, D.D.S.General Practice Dentistry1922144211
  4. Annie Truong, PAPhysician Assistant1891021606
  5. Chi Truong, MDPediatrics Physician1649262718
  6. Daniel Truong, M.D.Neurology Physician1992720916
  7. David Truong, M.D.Gastroenterology Physician1528090818
  8. Dien Truong, RPHPharmacist1902921265
  9. Hiep Truong, M.D.Obstetrics & Gynecology Physician1578520151
  10. James TruongOptician1801192802
  11. Joee Truong, R.NNurse Practitioner1093124844
  12. Jotika Truong, DAOM., L.ACAcupuncturist1912343948
  13. Kathy Truong, ODOptometrist1427772763
  14. Kong Truong, M.D.Neurology Physician1023329125
  15. Laurent Truong, MDFamily Medicine Physician1326669383
  16. Michael Truong, M.D.General Practice Physician1376834143
  17. Nathalee Truong, FNPFamily Nurse Practitioner1356912182
  18. Nhu Truong, LMFTMarriage & Family Therapist1841761244
  19. Phuc Truong, MDPediatrics Physician1407897473
  20. Tai Truong, AU.DAudiologist1528423217
  21. Than Truong, DPMPodiatrist1801840483
  22. Tra Mi Truong, O.D.Optometrist1760527311
  23. Vu Truong, NPFamily Nurse Practitioner1831799071
  24. Karen Truong-Fahman, NPAdult Health Nurse Practitioner1093480451
  25. Dieuthoa Truonggia, PSY. D.Clinical Psychologist1508879313
  26. Kimberly Tsai, PHARM.D.Pharmacist1932574084
  27. Graham Tse, MDPediatric Critical Care Medicine Physician1093816613
  28. Chris Tsimerekis, M.D.Endocrinology, Diabetes & Metabolism Physician1942311832
  29. Luke Tso, PHARM DPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1326374463
  30. Bernard Turbow, MDUrology Physician1790721082
  31. Marvin Turbow, MD, PHD, FACC, INC.Specialist1437285152
  32. Crystal Turner, BTOther Technician1881132355
  33. Robert Turner, M.D.Diagnostic Radiology Physician1699726182
  34. Rocco Tutela, M.D.Surgery Physician1306979208
  35. Jerry TynerStudent in an Organized Health Care Education/Training Program1851704407
  36. Lawrence Umaming, FNPNurse Practitioner1730894924
  37. Steven Underwood, DDSGeneral Practice Dentistry1093705139
  38. Eva Ung, PHARM.DPharmacist1194859538
  39. Valerie Joy UyMarriage & Family Therapist1669952149
  40. Suketu Vaishnav, MDOrthopaedic Surgery Physician1912087750
  41. Sharon Valdes-Dolphin, M.A., CCC-SLPSpeech-Language Pathologist1578868980
  42. Katlin ValenciaOther Technician1437607116
  43. Kyle ValenciaPhysical Therapy Assistant1811657414
  44. Katherine ValenteOther Technician1780126631
  45. Leonard Valentine, DCChiropractor1841321684
  46. Michael Valentine, DCChiropractor1700917531
  47. Judith ValenzuelaMental Health Counselor1407186471
  48. Kimberly Van Der HamCommunity Health Worker1316355761
  49. Elisha Van Deusen, D.C.Chiropractor1265445837
  50. Merilee Vance, RN, CNMMidwife1275200362

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.