NPPES file of Aug 9, 2026

Doctors and health care providers in Vacaville, CA

1,903 individual NPPES records list a practice address in Vacaville, 117th of 812 California cities. The largest group is behavior technician: 310, 16% of the city's records, against 18% across California. Page 38 of 39.

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

The 8 largest groups in Vacaville

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

Vacaville in California

  • Rank in California117th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups28.6% of all records

Compared with California as a whole, Vacaville has 2.5× the state's share of clinical psychologist records and 0.40× its share of case manager/care coordinator records.

Providers in Vacaville, alphabetically

  1. Alvin WuPharmacist1295494870
  2. Liwen Wu, PHARMDPharmacist1396048633
  3. Paul Wyman, MDChild & Adolescent Psychiatry Physician1861570681
  4. Lisa XiongAddiction (Substance Use Disorder) Counselor1083099113
  5. Kevin Xunan, DO, MPH, CPHFamily Medicine Physician1871029462
  6. Christina YacoBehavior Technician1396428587
  7. Jalal Yaganehdoust, MDInternal Medicine Physician1912197997
  8. Angela YagiBehavior Technician1558046284
  9. Gina YambaoMental Health Counselor1497899157
  10. Segundina Yancha, MDPsychiatry Physician1972775336
  11. Deborah YangFamily Medicine Physician1487976916
  12. Kai Chen YangPharmacist1245900273
  13. Matthew Yang, RBTBehavior Technician1487128435
  14. Michael YangBehavior Technician1669333803
  15. Natalie YangOrthodontics and Dentofacial Orthopedics Dentistry1922520121
  16. Shamgar Yang, RBTBehavior Technician1457816316
  17. Jatinder Yang-Chawla, M.DPsychiatry Physician1902035272
  18. Krishell Anne Ybuan, RNRegistered Nurse1558240986
  19. Vanessa YePhysical Therapist1184515769
  20. Hailey YearnshawBehavior Technician1568331270
  21. Christy Yee, PHARM.D.Pharmacist1255424222
  22. Natalia Yevtukh, M.S. SLPSpeech-Language Pathologist1366019770
  23. Baqara Yoder, PHARMDPharmacist1396293676
  24. Michelle Yokoyama, MFTMarriage & Family Therapist1053749317
  25. Amy Yonemitsu, D.D.S.General Practice Dentistry1306246988
  26. Derek YostBehavior Technician1265112627
  27. Aaron YoungNephrology Physician1942705827
  28. Hannah YoungBehavior Technician1336078310
  29. Linda Young, NPNurse Practitioner1558443408
  30. Lisa Young-Prendergast, MDFamily Medicine Physician1477625226
  31. Jeffrey YoungbergDentist1003292608
  32. Wirdzelii YundzeRegistered Nurse1700626975
  33. Katrina Zaboy, MS, RDRegistered Dietitian1851994826
  34. Syed Zaidi, M.D.Psychiatry Physician1366756819
  35. Jessica Zajdel, RNEmergency Registered Nurse1619802774
  36. Farhad Zamani, MDFamily Medicine Physician1558449397
  37. Wislise Zamor-Nelson, NPFamily Nurse Practitioner1457014300
  38. Eleen Zarebidaki, MDPediatrics Physician1285262931
  39. Erik ZehmBehavior Technician1700681483
  40. Samantha ZemanStudent in an Organized Health Care Education/Training Program1306526207
  41. Daniel Zenobia, MSOTR/L, CHTOccupational Therapist1700011137
  42. Paula Zervoulakos, FNP- CFamily Nurse Practitioner1750268488
  43. Zoe ZettasBehavior Technician1528984119
  44. Frank Zhang, DDSGeneral Practice Dentistry1356523179
  45. Liyan Zhang, MDInternal Medicine Physician1033297874
  46. Xiubo Zhang, MDFamily Medicine Physician1740708247
  47. Jia Zhao, PHARM D.Pharmacist1982840849
  48. Amy ZhouCertified Registered Nurse Anesthetist1942593843
  49. Mary Zhu, M.D, PHD, MPHGeneral Practice Physician1164497046
  50. Xuewei Zhu, MDInternal Medicine Physician1770635997

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

Vacaville, California appears in the CMS National Plan and Provider Enumeration System with 1,903 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 Vacaville - 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 Vacaville 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 Vacaville is weighted toward Behavior Technician (310 clinicians, followed by Pharmacist with 127 and Marriage & Family Therapist with 107). 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, Vacaville reports roughly 4.9 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 Vacaville 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 Vacaville, CA?

There are 1,903 registered healthcare providers in Vacaville, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Vacaville?

The most common specialties in Vacaville are Behavior Technician, Pharmacist, Marriage & Family Therapist, Clinical Social Worker, Physical Therapist. Behavior Technician has the most providers with 310.

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.