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 61 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. Daniel Slack, MDInternal Medicine Physician1952864027
  2. Samone SlaughterBehavior Technician1659214807
  3. Ricardo SlayCommunity Health Worker1881342764
  4. Shayondelice SledgeCase Manager/Care Coordinator1609487347
  5. Alison Sloan, FNP-BCFamily Nurse Practitioner1417509167
  6. Catherine SloverStudent in an Organized Health Care Education/Training Program1689908600
  7. Roy Smally, AMFTMarriage & Family Therapist1861006181
  8. Kristine Smircich, SPSpeech-Language Pathologist1518377084
  9. Cyndi Smit, LMFTMarriage & Family Therapist1013040591
  10. Alexandria SmithBehavior Technician1487475943
  11. Ambrose SmithBehavior Technician1639040801
  12. Brianna SmithCounselor1871289702
  13. Bridget Smith, M.S.Mental Health Counselor1891973319
  14. Carla Smith, RNRegistered Nurse1952197915
  15. Cecilia Smith, RNCase Management Registered Nurse1548826472
  16. Ciara SmithRehabilitation Practitioner1629504451
  17. Erik SmithDay Training/Habilitation Specialist1669349064
  18. Erik SmithBehavior Technician1790617124
  19. Faith SmithAdult Companion1851178412
  20. Jaylynn Smith, RNCase Management Registered Nurse1295436004
  21. Jeffrery Smith, P.T.Physical Therapist1053470534
  22. Jewell SmithProfessional Counselor1407160872
  23. Jocelyn SmithMedical Illustrator1033881529
  24. Kathleen Smith, LCSWClinical Social Worker1710033691
  25. Kathleen SmithOccupational Therapist1629489802
  26. Kayla SmithBehavior Technician1184462640
  27. Kimberly Smith, PSYDClinical Psychologist1639119563
  28. Raymond Smith, ASWClinical Social Worker1144382490
  29. Reggie SmithAddiction (Substance Use Disorder) Counselor1649439233
  30. Rubina SmithRegistered Nurse1710624515
  31. Sadye Smith, SUDRCAddiction (Substance Use Disorder) Counselor1891553947
  32. Shalonda SmithMarriage & Family Therapist1265050967
  33. Tristany SmithBehavior Technician1477243954
  34. Rhonda Smith FitzpatrickClinical Social Worker1225570146
  35. Valerie Smith Hunt, PSYDClinical Psychologist1073726014
  36. Sylvia Smith-GardnerClinical Social Worker1659907442
  37. Katie SneadBehavior Technician1114626231
  38. Shanna Snow, D.O.Obstetrics & Gynecology Physician1740483387
  39. Holly SnyderSocial Worker1255784476
  40. Murray Sobel, L.M.F.T.Marriage & Family Therapist1881758233
  41. Alyssa SoberBehavior Technician1821899345
  42. Nicole Sobolik, M.S., CCC-SLPSpeech-Language Pathologist1992408991
  43. Oli Isaac SogelauCommunity Health Worker1871316513
  44. Merle Sogge, M.D.Gastroenterology Physician1619993243
  45. Gurleen SohiPhysician Assistant1639744469
  46. Aaron Sok, DPTPhysical Therapist1689370991
  47. Danielle SolanoBehavior Technician1154089290
  48. Jessica SolanoAddiction (Substance Use Disorder) Counselor1629675061
  49. Salena SolisCommunity Health Worker1356114912
  50. Jose SolizAdult Companion1609758457

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.