NPPES file of Aug 9, 2026

Doctors and health care providers in St Helena, CA

13 individual NPPES records list a practice address in St Helena, 769th of 812 California cities. The largest group is chiropractor: 3, 23% of the city's records, against 1% across California.

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).

St Helena in California

  • Rank in California769th of 812 cities by records
  • Share of the state<0.1% of California's records
  • Specialties present11 taxonomy codes
  • Top three groups38.5% of all records
  • Chiropractor rank11th of the 10 California cities with the most

Providers in St Helena, alphabetically

  1. Sarah Boggs, MFTMarriage & Family Therapist1073715504
  2. James Doyle, MDOrthopaedic Hand Surgery Physician1811085756
  3. Catherine Haas, RDRegistered Dietitian1013306471
  4. Daniel Hamlin, DCChiropractor1487779526
  5. Curtis Han, DCChiropractor1215007810
  6. Darleen Hemmerlin, DDSGeneral Practice Dentistry1316007628
  7. Carol Isaacs, MDDermatology Physician1962508960
  8. Jason Lee, DCChiropractor1598772410
  9. Keri Montgomery, NPAdult Medicine Physician1881925154
  10. Aurina Poh Matacio, DDSDentist1154511186
  11. Gregory Smith, M.D.Hematology & Oncology Physician1265408447
  12. Joel Trent, C.R.N.A.Certified Registered Nurse Anesthetist1295823011
  13. James Woolley, M.D.Urology Physician1225037757

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

St Helena, California appears in the CMS National Plan and Provider Enumeration System with 13 registered healthcare providers spanning 11 distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in St Helena - 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 St Helena 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 St Helena is weighted toward Chiropractor (3 clinicians, followed by Certified Registered Nurse Anesthetist with 1 and Urology Physician with 1). 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. Per-capita density calculations require a state population baseline, which is currently unavailable for this geography.

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

For St Helena 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 St Helena, CA?

There are 13 registered healthcare providers in St Helena, CA, covering 11 specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in St Helena?

The most common specialties in St Helena are Chiropractor, Certified Registered Nurse Anesthetist, Urology Physician, Orthopaedic Hand Surgery Physician, Hematology & Oncology Physician. Chiropractor has the most providers with 3.

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.