NPPES file of Aug 9, 2026

Doctors and health care providers in Fairfield, CA

3,595 individual NPPES records list a practice address in Fairfield, 62nd of 812 California cities. The largest group is behavior technician: 696, 19% of the city's records, against 18% across California. Page 15 of 72.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in Fairfield

  1. Behavior Technician696
  2. Marriage & Family Therapist221
  3. Addiction (Substance Use Disorder) Counselor173
  4. Counselor134
  5. Clinical Social Worker129
  6. Mental Health Counselor124
  7. Adult Companion111
  8. Registered Nurse108

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

Fairfield in California

  • Rank in California62nd of 812 cities by records
  • Share of the state0.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups30.3% of all records

Compared with California as a whole, Fairfield has 14.3× the state's share of adult companion records and 0.51× its share of student in an organized health care education/training program records.

Providers in Fairfield, alphabetically

  1. Allen Dai, PHARMDPharmacist1124408513
  2. Tristan Dalisay, PTSpecialist1407008634
  3. Earl Dalmaceda, MIAAssistant Health Information Record Technician1073250346
  4. Rebekah Damewood, AMFTMental Health Counselor1205481645
  5. Jessica DamianoCounselor1104194711
  6. Baongan DangPharmacist1295107936
  7. Helen Dangtran, RPHPharmacist1194137299
  8. Hiyab DanielBehavior Technician1447800487
  9. Melissa DanielsBehavior Technician1114584307
  10. Kailyn DanielsonMarriage & Family Therapist1144732231
  11. Christy Danila, MPTPhysical Therapist1609053560
  12. David Danzeisen, MDFamily Medicine Physician1306924295
  13. Suzanne Darbyshire, COUNSELORAddiction (Substance Use Disorder) Counselor1063589281
  14. Christen Dardenne, PA-CPhysician Assistant1972702710
  15. Napoleon Dargan, M.AStudent in an Organized Health Care Education/Training Program1578815668
  16. Meshia Darling, N.P.Women's Health Nurse Practitioner1679657316
  17. Chantel DartezBehavior Technician1154016004
  18. Priyanka DasGeneral Practice Registered Nurse1013620939
  19. Sorabh Das, DDSGeneral Practice Dentistry1558746073
  20. Jeralyn DasallaSpeech-Language Assistant1780255380
  21. Padma Dasari, M DFamily Medicine Physician1730261488
  22. Terrial Davenport, LCSWClinical Social Worker1427481233
  23. Janice DavidCognitive & Behavioral Psychologist1184216178
  24. Steve DavidoffAddiction (Substance Use Disorder) Counselor1396078762
  25. Olivia DavidsonBehavior Technician1073209201
  26. Yadira Davila Alvarado, APCCProfessional Counselor1508449133
  27. Amy DavisAddiction (Substance Use Disorder) Counselor1205242583
  28. Candice Davis, CMTMassage Therapist1063114957
  29. Cinthea DavisBehavior Technician1881208528
  30. Deborah Davis, R.N.Pediatric Registered Nurse1518162494
  31. Deborah DavisHearing Instrument Specialist1770066375
  32. Eric DavisCommunity Health Worker1265278063
  33. Eric DavisBehavior Analyst1528915931
  34. Filecia Davis, BSHA/HMCounselor1437309416
  35. Hannah DavisMental Health Counselor1518316587
  36. Kashana Davis, APCCProfessional Counselor1588452437
  37. Keith DavisAddiction (Substance Use Disorder) Counselor1932649589
  38. Letrell DavisCase Manager/Care Coordinator1851716484
  39. Lyriq DavisBehavior Analyst1942701354
  40. Mahlaya DavisLicensed Vocational Nurse1497493373
  41. Shannon DavisMental Health Counselor1083039812
  42. Valerie DavisPeer Specialist1982559126
  43. Taysha Daviston, LMFTMarriage & Family Therapist1942728688
  44. Audrey DawsonBehavior Technician1154258572
  45. Madison DawsonBehavior Technician1720669856
  46. Dawn DayCounselor1730492109
  47. Dorian Day, RAD-TAddiction (Substance Use Disorder) Counselor1477316479
  48. Rosaura De Alvarez, M.S., AMFTMarriage & Family Therapist1770192023
  49. Nell De GuzmanPhysical Therapy Assistant1740759018
  50. Stephanie De HaroBehavior Technician1861119695

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

Fairfield, California appears in the CMS National Plan and Provider Enumeration System with 3,595 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 Fairfield - 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 Fairfield 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 Fairfield is weighted toward Behavior Technician (696 clinicians, followed by Marriage & Family Therapist with 221 and Addiction (Substance Use Disorder) Counselor with 173). 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, Fairfield reports roughly 9.2 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.

For Fairfield 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 Fairfield, CA?

There are 3,595 registered healthcare providers in Fairfield, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Fairfield?

The most common specialties in Fairfield are Behavior Technician, Marriage & Family Therapist, Addiction (Substance Use Disorder) Counselor, Counselor, Clinical Social Worker. Behavior Technician has the most providers with 696.

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.