NPPES file of Aug 9, 2026

Doctors and health care providers in Tracy, CA

1,864 individual NPPES records list a practice address in Tracy, 120th of 812 California cities. The largest group is behavior technician: 1,009, 54% of the city's records, against 18% across California. Page 25 of 38.

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

The 8 largest groups in Tracy

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

Tracy in California

  • Rank in California120th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups60.9% of all records

Compared with California as a whole, Tracy has 3.1× the state's share of behavior technician records and 0.30× its share of marriage & family therapist records.

Providers in Tracy, alphabetically

  1. Brittany NowakowskiBehavior Technician1558955666
  2. Lucille Nowakowski, RNRegistered Nurse1356761209
  3. Ariel NunezBehavior Technician1760373914
  4. Thomas O'Neil, MDOphthalmology Physician1831162999
  5. Filadelfo Oandasan, M.D.Internal Medicine Physician1396955035
  6. Juan Pablo Obaldo, SLPASpeech-Language Assistant1285435560
  7. Jessica Ocegueda, PHARM. DPharmacist1790383503
  8. Alyssa OchoaBehavior Technician1447140611
  9. Blanca Ochoa, M.D.MOHS-Micrographic Surgery Physician1538280292
  10. Carmen OchoaBehavior Technician1780252312
  11. Grisel OchoaBehavior Technician1356213243
  12. Michelle OchoaBehavior Technician1881488112
  13. Jonah OconBehavior Technician1457931230
  14. Ursula OgambaMental Health Counselor1881931103
  15. Anthony OgbodoFamily Nurse Practitioner1063884625
  16. Uzoamaka Ogbodo, FNP, PMHNPFamily Nurse Practitioner1720779184
  17. Anthony OghoghorieDriver1184869547
  18. Omotoyosi OgunbajoBehavior Technician1124773064
  19. Samuel Oh, MDAnesthesiology Physician1881770279
  20. John OliveiraMental Health Counselor1003210311
  21. Carolina Olvera CarlosBehavior Technician1366209405
  22. Diesel OmenBehavior Technician1740042001
  23. Monira OmroniBehavior Technician1154140382
  24. Lettie Ordone, LCSWClinical Social Worker1932433778
  25. Chelsea OrianBehavior Technician1801399209
  26. Brooke OrrBehavior Technician1275483620
  27. Marina Ortega-IvyBehavior Analyst1679407522
  28. Vanessa OrtezBehavior Technician1831803774
  29. Adriana OrtizBehavior Technician1265046080
  30. Brenda OrtizBehavior Technician1669052668
  31. Marisol OrtizBehavior Technician1629694211
  32. Shannon OrtizBehavior Technician1205461597
  33. Lillian Ortiz-Switzer, P.T.Physical Therapist1568425759
  34. Alondra OsegueraBehavior Technician1912627373
  35. Ahmed OsmanBehavior Technician1235019902
  36. Sebastian OviedoBehavior Technician1083282776
  37. Glen Ozawa, O.D.Optometrist1922046994
  38. Jasmeen Pabla, DMDGeneral Practice Dentistry1255002127
  39. Achyut PachallaBehavior Technician1891541868
  40. Addriana PadillaBehavior Technician1801505292
  41. Denise PadillaClinical Social Worker1851772693
  42. Alexander Padilla-HarroldClinical Social Worker1538881511
  43. Norma Paisley, L.C.S.W.Clinical Social Worker1447437892
  44. Ariel PajaritoBehavior Technician1528691086
  45. Sambrajya Palagummi, M.DGeneral Practice Physician1902019433
  46. Marcelle PalmoreBehavior Technician1801481544
  47. Devna Pandit, DDSDentist1629074729
  48. Kasey PankratzBehavior Technician1730648478
  49. Brianna ParadzinskiBehavior Technician1497224208
  50. Cynthia ParisPharmacist1952719478

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

Tracy, California appears in the CMS National Plan and Provider Enumeration System with 1,864 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 Tracy - 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 Tracy 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 Tracy is weighted toward Behavior Technician (1,009 clinicians, followed by Pharmacist with 83 and General Practice Dentistry 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, Tracy reports roughly 4.8 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Tracy practice address, a coverage gap Tracy patients typically fill by traveling to a larger nearby hub.

For Tracy 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 Tracy, CA?

There are 1,864 registered healthcare providers in Tracy, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Tracy?

The most common specialties in Tracy are Behavior Technician, Pharmacist, General Practice Dentistry, Family Medicine Physician, Marriage & Family Therapist. Behavior Technician has the most providers with 1,009.

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.