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 37 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. Harriet Stallings, O.D.Optometrist1366413379
  2. Lysa Stark, D.C.Chiropractor1598880270
  3. Lindsay StashStudent in an Organized Health Care Education/Training Program1386166973
  4. Stephanie SteelMental Health Counselor1508374513
  5. Helen Steele, MDFamily Medicine Physician1548243694
  6. Rebecca SteenMarriage & Family Therapist1720772916
  7. Scott SteffensenMental Health Counselor1932984739
  8. Daniel Stein, M.D.Orthopaedic Surgery Physician1205864477
  9. Jenessa StoneBehavior Technician1881005452
  10. Naemi Strobel, MA, CCC-SLPSpeech-Language Pathologist1154468882
  11. Brian Stuckman, RNAdministrator Registered Nurse1972381242
  12. Paul Stumpe, PHARMDPharmacist1649108184
  13. Derrick Su, MDSpecialist1740569789
  14. Angeli Suarez, M.D.Pediatrics Physician1275590028
  15. Shunmugaraja Subbiah, M.D.Anesthesiology Physician1184688715
  16. Isaac Sun, DDSDentist1417403395
  17. Ettayapurum Sunderrajan, M.D.Pulmonary Disease Physician1679511315
  18. Sobha Sunderrajan, M.D.Specialist1932195641
  19. Sarah Sung, PHARMDPharmacist1104496306
  20. Patricia SutherlandClinical Social Worker1144796525
  21. Lucy Suwarsa, MDFamily Medicine Physician1376534628
  22. Satinder Swaroop, MDCardiovascular Disease Physician1033290887
  23. Amy Swei, L.AC.,D.N.B.A.O.Acupuncturist1306820931
  24. Davida Swhartz, MSWSocial Worker1679663306
  25. Paul Sychangco, M.D,Internal Medicine Physician1053569483
  26. Lauren Sylwester, CNMAdvanced Practice Midwife1962027706
  27. Riley SzaboMental Health Counselor1578201497
  28. Jonathan Ta, PHARM.DPharmacist1427327378
  29. Mikio Tachibana, MDInternal Medicine Physician1598721227
  30. Sarah Taha, LCSWClinical Social Worker1407336019
  31. Jessica TanMedical Physician Assistant1598327967
  32. Smita Tandon, MDPediatrics Physician1205835634
  33. Judith Tang, PHARMDPharmacist1245785351
  34. Julia TangBehavior Technician1538001813
  35. Vivian Tang, PHARM.D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1649637943
  36. Minal TapadiaOrthopaedic Surgery Physician1982995916
  37. Dilip Tapadiya, M.D.Specialist1275607350
  38. Kimberly Tashkin, P.T.Physical Therapist1821284779
  39. Jessica Taylor, MFT TRAINEEMarriage & Family Therapist1851019889
  40. John Taylor, D.C.Chiropractor1447329859
  41. Kathleen Taylor, MDPediatrics Physician1477189421
  42. Elsa Tekle, M.D.Anesthesiology Physician1093799306
  43. Isis TelloPediatric Registered Nurse1356976617
  44. Deeling Teng, MDInternal Medicine Physician1578576815
  45. Lauren Teng, DPT, PTPhysical Therapist1043033269
  46. Marcia Tengan, NPFamily Nurse Practitioner1780181065
  47. Seiju Terada, O.D.Corneal and Contact Management Optometrist1992862676
  48. Tien Thai, MSWClinical Social Worker1306295399
  49. Kim Anh ThanClinical Social Worker1134606627
  50. Daniel Theilen, PTAPhysical Therapy Assistant1386211324

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.