NPPES file of Aug 9, 2026

Doctors and health care providers in Vista, CA

2,017 individual NPPES records list a practice address in Vista, 111th of 812 California cities. The largest group is behavior technician: 170, 8% of the city's records, against 18% across California. Page 15 of 41.

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

Vista in California

  • Rank in California111th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups21.6% of all records

Compared with California as a whole, Vista has 3.3× the state's share of professional counselor records and 0.28× its share of student in an organized health care education/training program records.

Providers in Vista, alphabetically

  1. Maria GuzmanCommunity Health Worker1588109243
  2. Mariana Guzman, LMFT, LAADCMarriage & Family Therapist1093025546
  3. Cristopher Guzman CamposBehavior Technician1588363089
  4. Mary Haas, PT, DPTPhysical Therapist1518797398
  5. Terry Haas, M.D.Internal Medicine Physician1891868212
  6. Paula Hackman, FNPFamily Nurse Practitioner1346472602
  7. Angel Hacopiannik, ASWSocial Worker1013846054
  8. Taravat Haghollahi, D.M.D.Dentist1083959084
  9. Jill Hahlen, SLPSpeech-Language Pathologist1417182361
  10. Christopher HalaszCounselor1275725210
  11. Yi Halgedahl, PMHNPPsychiatric/Mental Health Nurse Practitioner1619246907
  12. Jenney HallPsychiatric/Mental Health Registered Nurse1225645799
  13. Jennifer HallRegistered Nurse1891615878
  14. Megan Hall, PA-CPhysician Assistant1497216824
  15. Rhonda HallAddiction (Substance Use Disorder) Counselor1174091243
  16. Artemis Haller, MTMassage Therapist1326824848
  17. David Ham, M.D.Family Medicine Physician1952515959
  18. Sherry HamidifardDentist1235801184
  19. Deborah Hamilton, LMFTMarriage & Family Therapist1497627079
  20. Tina Hamilton, NPPsychiatric/Mental Health Nurse Practitioner1518543818
  21. David Han, M.S., D.M.D.Orthodontics and Dentofacial Orthopedics Dentistry1538352471
  22. Roxanne HananiaBehavior Analyst1255846135
  23. Cassandra HandfordBehavior Technician1346891181
  24. Cline Handy, M.D.Diagnostic Radiology Physician1962509919
  25. Donald Hanley, PHDMarriage & Family Therapist1457412470
  26. Michael Hann, DDSGeneral Practice Dentistry1871911297
  27. Karen Hanna, M.D.Surgery Physician1184687337
  28. Ginger Hansen, D.D.S.General Practice Dentistry1235226234
  29. Timothy Hansen, D.D.SDentist1417173923
  30. Breena Hansink, RBTBehavior Technician1245707710
  31. Conrad Hanstein, M.D.Family Medicine Physician1972544369
  32. Nowrin Haque, MDInterventional Cardiology Physician1750888392
  33. Sarah Harding, DMDOral and Maxillofacial Surgery (Dentist)1295007573
  34. Emily HardyBehavior Technician1316583255
  35. Shannon HargreavesStudent in an Organized Health Care Education/Training Program1023431566
  36. Lillian Harkin, PTPhysical Therapist1053020404
  37. Kevin Harmon, DPTPhysical Therapist1588062749
  38. Angela HarrisMarriage & Family Therapist1154218162
  39. Kathryn Harris, PNPPediatric Nurse Practitioner1164677589
  40. Pamela Harris, FNPFamily Nurse Practitioner1407545221
  41. Nicole Hartford, D.O.Pediatrics Physician1346530466
  42. Theresa Hasegawa, CADC II, ICADCAddiction (Substance Use Disorder) Counselor1982721478
  43. Shawdon HashemiOccupational Therapy Assistant1740028760
  44. Teri Haskins, OTR, CHTOccupational Therapist1003866492
  45. Farzaneh Hassani, MDInternal Medicine Physician1942204979
  46. David Hatherill, PHD LMFTMarriage & Family Therapist1144381898
  47. Kylie HausmanBehavior Technician1306566138
  48. Madison HaussmannAddiction (Substance Use Disorder) Counselor1619502317
  49. Melissa Hawkins, M.D.Obstetrics & Gynecology Physician1851620447
  50. Thembi HawkinsBehavior Technician1407595200

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

Vista, California appears in the CMS National Plan and Provider Enumeration System with 2,017 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 Vista - 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 Vista 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 Vista is weighted toward Behavior Technician (170 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 133 and Marriage & Family Therapist with 132). 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, Vista reports roughly 5.2 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.

Of California's most common specialties, Behavior Analyst is the most prominent one with no provider currently listing a Vista practice address, a coverage gap Vista patients typically fill by traveling to a larger nearby hub.

For Vista 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 Vista, CA?

There are 2,017 registered healthcare providers in Vista, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Vista?

The most common specialties in Vista are Behavior Technician, Addiction (Substance Use Disorder) Counselor, Marriage & Family Therapist, Clinical Social Worker, Mental Health Counselor. Behavior Technician has the most providers with 170.

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.