Doctors and health care providers in Napa, CA
3,583 individual NPPES records list a practice address in Napa, 63rd of 812 California cities. The largest group is behavior technician: 990, 28% of the city's records, against 18% across California. Page 17 of 72.
The 8 largest groups in Napa
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Napa in California
- Rank in California63rd of 812 cities by records
- Share of the state0.4% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups37% of all records
Compared with California as a whole, Napa has 4.4× the state's share of licensed psychiatric technician records and 0.28× its share of student in an organized health care education/training program records.
Providers in Napa, alphabetically
- John Diana, M.D.Adult Reconstructive Orthopaedic Surgery Physician1649297540
- Jessica DiazBehavior Technician1801745963
- Valeria DiazBehavior Technician1750194676
- Victoria DiazHealth & Wellness Coach1043172877
- Izabella Diaz - PizanoBehavior Technician1114871894
- Alba Diaz CanelaBehavior Technician1700354685
- Jane Dickel, LCSWClinical Social Worker1053346247
- Kristy DicusRegistered Nurse1295601813
- Brenda Dieguez CarrilloRegistered Nurse1770221566
- Colter Diehl, MFTIMarriage & Family Therapist1447620117
- Rebecca Diel, BS, IBCLCLactation Consultant (Non-RN)1285935601
- Adrienne Difabio, PHDPsychologist1659702785
- Whitney DillBehavior Technician1427633775
- Boriana DimonteBehavior Technician1093485435
- Zacarah DinkinsBehavior Technician1033824925
- Stanley Dittman, D.D.S.Dentist1295957082
- Joan Dittrich, PH DCounseling Psychologist1003875592
- Aparna Dixit-Brunet, PSYDClinical Psychologist1376771832
- Loralei DixonBehavior Technician1225842081
- Daryl Dizmang, MDCardiovascular Disease Physician1033222385
- Patricia Dizmang, M.D.Internal Medicine Physician1194790261
- Bianca DizonBehavior Technician1962189639
- Louis Doan, D.O.Psychiatry Physician1255674982
- Donald Dobbs, DDSDentist1366470189
- Waltraut Dobbs, DDSDentist1801008537
- Rachel Dock, MASTER'S DEGREEMarriage & Family Therapist1629514948
- Nikki DoeBehavior Technician1063991453
- Donna Dolislager, MDPediatrics Physician1780736918
- Jacqueline Domecus, PTAPhysical Therapy Assistant1114440237
- Del Domezio, LCSWClinical Social Worker1245329390
- Taylor-Amanda DomingoBehavior Technician1053237883
- Briyonna DominiqueBehavior Technician1689457475
- Sylvana DomokosBehavior Technician1548114408
- Savannah DonahueBehavior Technician1487474466
- Deborah Donaldson, PTPhysical Therapist1689611998
- Gabrielle DongBehavior Technician1831020999
- Yoselin DonisBehavior Technician1275229148
- Kate Donnelly, PA-CPhysician Assistant1760502603
- Christine DonohoeClinical Social Worker1346789245
- Delainie DonohueBehavior Technician1780373555
- Tawnya Dorn, RD, LDNRegistered Dietitian1205836459
- Danielle DorseyCounselor1770030892
- Artur Dos SantosBehavior Technician1457174633
- Megan DoughertyBehavior Technician1700672532
- Ana Douglas, FNPFamily Nurse Practitioner1114020997
- Noah DoveBehavior Technician1639951361
- Mechelle DowellCase Manager/Care Coordinator1871165027
- Tamera Downing-Cramer, LMFTMarriage & Family Therapist1699303982
- Lily DownsSocial Worker1891565586
- Megan Dozler, PHD, MT-BCMusic Therapist1679112833
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Napa, California appears in the CMS National Plan and Provider Enumeration System with 3,583 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 Napa - 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 Napa 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 Napa is weighted toward Behavior Technician (990 clinicians, followed by Marriage & Family Therapist with 187 and Clinical Social Worker with 147). 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, Napa 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.
Of California's most common specialties, Behavior Analyst is the most prominent one with no provider currently listing a Napa practice address, a coverage gap Napa patients typically fill by traveling to a larger nearby hub.
For Napa 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 Napa, CA?
There are 3,583 registered healthcare providers in Napa, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Napa?
The most common specialties in Napa are Behavior Technician, Marriage & Family Therapist, Clinical Social Worker, Case Manager/Care Coordinator, Clinical Psychologist. Behavior Technician has the most providers with 990.
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.