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 31 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. Danielle PershinBehavior Technician1013630441
  2. Mahmood Peshimam, M.D.Family Medicine Physician1801950498
  3. Janet Peterson, SLPASpeech-Language Assistant1386177020
  4. Josiah PetersonCase Manager/Care Coordinator1407013428
  5. Sarah PetersonMarriage & Family Therapist1144978065
  6. Alexander Pham, BTOther Technician1174909154
  7. Alexander Pham, DPTPhysical Therapist1003566217
  8. Bennie Pham, D.D.S.Dentist1891931762
  9. Cau Pham, M.D.Anesthesiology Physician1437110459
  10. Christine Pham, PHARMDPharmacist1124770912
  11. Debbie Pham, PHARMDPharmacist1073821872
  12. Diana PhamMarriage & Family Therapist1225532757
  13. Dieu Pham, M.D., D.D.S.Oral & Maxillofacial Surgery (D.M.D.)1205856598
  14. Gemie Pham, O.D.Optometrist1265677363
  15. Hai Pham, PHARM DPharmacist1013049196
  16. Hong An PhamFamily Nurse Practitioner1134512551
  17. Jacqueline PhamStudent in an Organized Health Care Education/Training Program1952913410
  18. Jonathan Pham, FNP-BCFamily Nurse Practitioner1053298406
  19. Kathy PhamSocial Worker1689028235
  20. Kenny PhamPhysical Therapy Assistant1013868249
  21. Kim PhamCommunity Health Worker1538967559
  22. Krystal Pham, MDObstetrics & Gynecology Physician1710001763
  23. Michelle Pham, PHARM.DPharmacist1700200326
  24. Mina PhamClinical Social Worker1063097129
  25. Nathan Pham, MSWSocial Worker1790551505
  26. Nghia Pham, PHARM DPharmacist1518000876
  27. Nhu Crystal PhamBehavior Technician1700341070
  28. Patricia Pham, OTD, OTR/LOccupational Therapist1104634971
  29. Phuong PhamSchool Counselor1295692226
  30. Theresa Pham, DDSDentist1851425334
  31. Tho Pham, RNEmergency Registered Nurse1952880627
  32. Thuy Pham, RPHPharmacist1841569860
  33. Tommy PhamPharmacist1427404920
  34. Uyen PhamBehavior Technician1629840038
  35. Victoria Pham, DOFamily Medicine Physician1700089935
  36. Vinh Pham, RNRegistered Nurse1770227092
  37. Dorothy PhanBehavior Technician1205473386
  38. Duke Phan, MDNeurology Physician1437352630
  39. Han PhanBehavior Technician1700558822
  40. Huan PhanOncology Pharmacist1477318152
  41. Ivy PhanBehavior Analyst1962209288
  42. Justin PhanPharmacist1700317229
  43. Leah Phan, D.O.Family Medicine Physician1104288562
  44. Lillian Phan, M.S., BCBABehavior Analyst1811246721
  45. Linh PhanCase Manager/Care Coordinator1962913715
  46. Michael Phan, DCChiropractor1487726485
  47. Pauline Phan, D.D.S.General Practice Dentistry1912118480
  48. Tiffany Phan, FNPFamily Nurse Practitioner1205520855
  49. Don Phung, DOInternal Medicine Physician1740924059
  50. Lanh Phung, M.D.Anesthesiology Physician1780603365

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.