NPPES file of Aug 9, 2026

Doctors and health care providers in Stanford, CA

5,606 individual NPPES records list a practice address in Stanford, 25th of 812 California cities. The largest group is students in training: 671, 12% of the city's records, against 4% across California. Page 72 of 113.

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

Stanford in California

  • Rank in California25th of 812 cities by records
  • Share of the state0.6% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups30.7% of all records

Compared with California as a whole, Stanford has 43.6× the state's share of hematology (internal medicine) physician records and 0.65× its share of family medicine physician records.

Providers in Stanford, alphabetically

  1. Nkechi Okoro, MDPsychiatry Physician1144857178
  2. Derick Okwan-Duodu, M.D.,PH.D.Anatomic Pathology & Clinical Pathology Physician1174969356
  3. Cornelius Olcott, M.D.Specialist1457439515
  4. Hilary Oleon, LCSWSocial Worker1740895101
  5. Jean-Marc Olivot, MD, PHDVascular Neurology Physician1821264250
  6. Eric Ollila, MDAnatomic Pathology & Clinical Pathology Physician1982191995
  7. Mary Olomu, MDInternal Medicine Physician1982117628
  8. Cameron Olsen, MDDiagnostic Radiology Physician1619590536
  9. Kathryn Olson, PA-CPhysician Assistant1841381472
  10. Nichole Olson, PHDClinical Psychologist1568838050
  11. Niels Olson, MDAnatomic Pathology & Clinical Pathology Physician1407082100
  12. Julie Olsson, MDPulmonary Disease Physician1013042019
  13. Antonio Omuro, MDNeurology Physician1912175134
  14. Sandy On, PHARMDPharmacist1144869850
  15. Stacie OngStudent in an Organized Health Care Education/Training Program1679275242
  16. Michael Ongele, MDAnesthesiology Physician1710447057
  17. Loice Ongwela, DNP, RN, CNS-BC, CDEAdult Health Clinical Nurse Specialist1588131759
  18. Grace Oppenheim, NPNurse Practitioner1013355411
  19. Chi Mong Or, MDOphthalmology Physician1639676000
  20. Willie Nnamdi Orakpo, MDPsychiatry Physician1306337035
  21. Lisa Orloff, MDOtolaryngology/Facial Plastic Surgery Physician1619934122
  22. Shelly Orloff, NPNurse Practitioner1093900995
  23. Anthony Oro, MDDermatology Physician1902963853
  24. Veronica Orr, MDAnesthesiology Physician1174986897
  25. Alexander OrtizStudent in an Organized Health Care Education/Training Program1437851748
  26. Jennifer Ortiz, PHD.Clinical Psychologist1538616651
  27. Maria Ortiz Urda, M.DDermatology Physician1154574853
  28. Clemens Ortner, MDAnesthesiology Physician1174837785
  29. Nathan OrwigStudent in an Organized Health Care Education/Training Program1740128529
  30. Vadim Osadchiy, MDUrology Physician1407482474
  31. Terry Osback, MDPsychiatry Physician1356446827
  32. Bradley Osemwengie, MDOrthopaedic Surgery Physician1588241194
  33. Sachie Oshima, MDEmergency Medicine Physician1700809100
  34. Karen Osilla, PHDClinical Psychologist1174867147
  35. Raquel Osorno, PSYDClinical Psychologist1497395131
  36. Laurie Ostacher, LCSWSocial Worker1528255759
  37. Madeleine Oster, DNP, NPNurse Practitioner1023654084
  38. Oscar Otanez, M.D.Anatomic Pathology & Clinical Pathology Physician1225226590
  39. Joanne Otani, NPNurse Practitioner1619604642
  40. Oscar Otero Marquez, MDOphthalmology Physician1043969116
  41. Einar Ottestad, MDPain Medicine (Anesthesiology) Physician1609076983
  42. Linda Ottoboni, CNSClinical Nurse Specialist1558813725
  43. Chelsea Outhier, ACNPAcute Care Nurse Practitioner1568930360
  44. Rachel Outterson, MDAnesthesiology Physician1790941870
  45. Anne Lorraine Owen, NPNurse Practitioner1962773325
  46. Michael Owen, PAPhysician Assistant1841800448
  47. Sarah Owens, MDObstetrics & Gynecology Physician1922687151
  48. Yasmin Owusu, MDPsychiatry Physician1538488754
  49. Philip Oyer, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1124136767
  50. Preeti Oza, PHD, PTPhysical Therapist1235497157

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

Stanford, California appears in the CMS National Plan and Provider Enumeration System with 5,606 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 Stanford - 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 Stanford 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 Stanford is weighted toward Student in an Organized Health Care Education/Training Program (671 clinicians, followed by Nurse Practitioner with 572 and Physician Assistant with 480). 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, Stanford reports roughly 14.4 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 Technician is the most prominent one with no provider currently listing a Stanford practice address, a coverage gap Stanford patients typically fill by traveling to a larger nearby hub.

For Stanford 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 Stanford, CA?

There are 5,606 registered healthcare providers in Stanford, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Stanford?

The most common specialties in Stanford are Student in an Organized Health Care Education/Training Program, Nurse Practitioner, Physician Assistant, Anesthesiology Physician, Internal Medicine Physician. Student in an Organized Health Care Education/Training Program has the most providers with 671.

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.