NPPES file of Aug 9, 2026

Doctors and health care providers in Lake Forest, CA

1,008 individual NPPES records list a practice address in Lake Forest, 186th of 812 California cities. The largest group is behavior technician: 292, 29% of the city's records, against 18% across California. Page 4 of 21.

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

The 8 largest groups in Lake Forest

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

Lake Forest in California

  • Rank in California186th of 812 cities by records
  • Share of the state0.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups38.3% of all records

Compared with California as a whole, Lake Forest has 5.3× the state's share of speech-language assistant records and 0.26× its share of student in an organized health care education/training program records.

Providers in Lake Forest, alphabetically

  1. Carolyn Castaneda FassioliGeneral Practice Dentistry1023553245
  2. Ashley CastanonBehavior Technician1972427201
  3. Jacob Castersen, PT, DPTPhysical Therapist1205393477
  4. Lauren CauseyBehavior Technician1679446199
  5. Giselle CedillosBehavior Technician1093665572
  6. Elizabeth CejaBehavior Technician1205705233
  7. Marie Centrone-Reddy, L.C.S.WClinical Social Worker1538180922
  8. Oscar CervantesBehavior Analyst1164280699
  9. Bridget Chadwick, CADC-IAddiction (Substance Use Disorder) Counselor1205457827
  10. Raquel ChairezBehavior Technician1790603710
  11. Mary ChalabySpeech-Language Assistant1801463815
  12. Alexandrea ChambersBehavior Technician1245168558
  13. Victoria ChambersContractor1043050388
  14. Gertrude Chancellor, FNP-BCFamily Medicine Physician1467944900
  15. Diem Chang, D.D.S.General Practice Dentistry1730335951
  16. Eileen Chang, LMFTMarriage & Family Therapist1619280740
  17. Grace Chang, M.D., PH.D.Ophthalmology Physician1710185814
  18. Ku-Juey Raymond Chang, M.D.Endocrinology, Diabetes & Metabolism Physician1689611337
  19. Shirley Chang, DPMPodiatrist1245422864
  20. Bianca ChavezBehavior Technician1205589587
  21. Brian Chavez, M.D.Endocrinology, Diabetes & Metabolism Physician1215974969
  22. Jennifer Chavez, M.A. ED., P.P.S.Counselor1174497853
  23. Perrin Chee, D.C.Chiropractor1336368216
  24. Betty Chen, OTR/LOccupational Therapist1942632476
  25. Carol Chen, PTPhysical Therapist1306096292
  26. Cheng-Jung Chen, L.AC.Acupuncturist1497084024
  27. Sabrina ChenPharmacist1053696294
  28. Jenny ChevezHealth Information Technician1588375588
  29. Laurie Chew, OTR/LOccupational Therapist1588484836
  30. Tamara ChinivizyanBehavior Technician1912714627
  31. Harleigh ChittickBehavior Technician1669302527
  32. Anna Cho, MPTPhysical Therapist1275775926
  33. Eun Cho, PAMedical Physician Assistant1528308061
  34. Jae Cho-ZollingerSocial Worker1871348854
  35. Young Soon ChoiAcupuncturist1033573811
  36. Stephen Christensen, ODOptometrist1730216680
  37. Terence Chu, M.D.Pediatrics Physician1801991864
  38. Rex Chuang, D.D.S.Pediatric Dentistry1316257371
  39. Yentzu Chuang, ACUPUNCTURISTAcupuncturist1457225195
  40. Jacob Chung, PT, DPTPhysical Therapist1144180035
  41. Demario ChurchBehavior Technician1326997743
  42. Jordon ChurchBehavior Technician1801718325
  43. Molly ChurlonisMedical Physician Assistant1699201277
  44. Brittney Cicon, D.C.Chiropractor1104084987
  45. Monica CisnerosBehavior Technician1538041405
  46. Stacy Clark, LMFTMarriage & Family Therapist1881047124
  47. Julie Claveria, M.D.Specialist1467415570
  48. Nicole ClellandMarriage & Family Therapist1730542382
  49. Bailey Clement, MS CF-SLPSpeech-Language Pathologist1750115234
  50. Jessica Clemente, OTR/LOccupational Therapist1992169510

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

Lake Forest, California appears in the CMS National Plan and Provider Enumeration System with 1,008 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 Lake Forest - 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 Lake Forest 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 Lake Forest is weighted toward Behavior Technician (292 clinicians, followed by Marriage & Family Therapist with 51 and Pharmacist with 43). 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, Lake Forest reports roughly 2.6 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 Lake Forest practice address, a coverage gap Lake Forest patients typically fill by traveling to a larger nearby hub.

For Lake Forest 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 Lake Forest, CA?

There are 1,008 registered healthcare providers in Lake Forest, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Lake Forest?

The most common specialties in Lake Forest are Behavior Technician, Marriage & Family Therapist, Pharmacist, Physical Therapist, Chiropractor. Behavior Technician has the most providers with 292.

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.