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 38 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. Belem LiberatoPeer Specialist1548096746
  2. Tamara LigonsAddiction (Substance Use Disorder) Counselor1588928675
  3. Jin Hoon LimGeneral Practice Dentistry1285401752
  4. Kim Lim ChiuLicensed Vocational Nurse1740020742
  5. Andrew Lin, M.D.Obstetrics & Gynecology Physician1689617565
  6. Jennifer Lincoln, LCSWClinical Social Worker1003445008
  7. Halle Lindsay, MDStudent in an Organized Health Care Education/Training Program1992434252
  8. Altheia LindseyAddiction (Substance Use Disorder) Counselor1013782762
  9. Jennifer Lingafeldt, MFTMarriage & Family Therapist1538211305
  10. Julia LintonHealth Information Technician1063671253
  11. Jeffrey Linz, R.N.Adult Psychiatric/Mental Health Registered Nurse1144458084
  12. Pamela LippincottMental Health Counselor1780745901
  13. Jacob Lippman, LMFTMarriage & Family Therapist1558415687
  14. Nathan List, DPTOrthopedic Physical Therapist1114403326
  15. Shania LittleMental Health Counselor1023589272
  16. Benjamin Liu, D.O.Hospitalist Physician1932544061
  17. Jennifer Liu, DDS MDOral & Maxillofacial Surgery (D.M.D.)1922293935
  18. Richard LivingstonMental Health Counselor1205122025
  19. Leeza LizanaBehavior Technician1659138170
  20. Bianca LlamasStudent in an Organized Health Care Education/Training Program1417534371
  21. Paola LlanasBehavior Technician1831020403
  22. Carmelita LlaveCommunity Health Registered Nurse1811039803
  23. Kevin Llave, DPTPhysical Therapist1356120208
  24. Michael Lloyd, IDMTIndependent Duty Medical Technicians1457101099
  25. Zoe Lloyd-TrotterBehavior Technician1053121749
  26. Alina LocquiaoBehavior Technician1790349660
  27. Isabel LoeraBehavior Technician1124756713
  28. Gloria LoftonMassage Therapist1407700479
  29. Paige LoftonBehavior Technician1124756614
  30. Romoanetia Lofton, DNPRegistered Nurse1578484390
  31. Theresa LoftonDay Training/Habilitation Specialist1699973966
  32. Pamela Loftus, RN 441780Registered Nurse1508602301
  33. Analiese LoganMarriage & Family Therapist1023824489
  34. Melissa Loja, MDVascular Surgery Physician1578826749
  35. Christi Lombre, MDPediatrics Physician1164687661
  36. Maria Lomeli LozaBehavior Technician1467157875
  37. Hollis London, D.O.Emergency Medicine Physician1538456165
  38. Desiree LongLicensed Vocational Nurse1770907131
  39. Jennifer Longoria, OTAOccupational Therapy Assistant1639425721
  40. Aaron LopezLicensed Psychiatric Technician1851804421
  41. Adilena LopezBehavior Technician1578197398
  42. Alexandria Lopez, MSMarriage & Family Therapist1528845302
  43. Daniela LopezBehavior Technician1003539701
  44. Delinah LopezBehavior Analyst1134603517
  45. Gabriela LopezBehavior Technician1679116578
  46. Jonathan Lopez, MDHematology & Oncology Physician1881682714
  47. Jonhatan LopezBehavior Technician1104457548
  48. Judy Lopez, ADM ACCT ASSISTAddiction (Substance Use Disorder) Counselor1518113059
  49. Karen LopezCounselor1295199362
  50. Lauren LopezCase Manager/Care Coordinator1477173672

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.