NPPES file of Aug 9, 2026

Doctors and health care providers in Corvallis, OR

4,096 individual NPPES records list a practice address in Corvallis, 6th of 171 Oregon cities. The largest group is counselor: 763, 19% of the city's records, against 4% across Oregon. Page 56 of 82.

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

The 8 largest groups in Corvallis

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

Corvallis in Oregon

  • Rank in Oregon6th of 171 cities by records
  • Share of the state3.3% of Oregon's records
  • Specialties present25 or more taxonomy codes
  • Top three groups31.5% of all records
  • Counselor rank2nd of the 10 Oregon cities with the most

Compared with Oregon as a whole, Corvallis has 9.8× the state's share of attendant care provider records and 0.32× its share of massage therapist records.

Providers in Corvallis, alphabetically

  1. Holly Okerstrom, DMDDentist1689007494
  2. Keith Okerstrom, D.C.Chiropractor1124230214
  3. Carol Oldshield, RN, BSNRegistered Nurse1699958454
  4. Benjamin Oldson, D.O.Family Medicine Physician1154649945
  5. Makayla OlivasNurse's Aide1790516987
  6. Angela OliverMental Health Counselor1265633366
  7. Larry Oliver, D.C.Chiropractor1720085020
  8. Loretta Olivier, M.SC., CCC-SLPSpeech-Language Pathologist1447457213
  9. Alyson OlsenCounselor1407709231
  10. Christine Olsen, PHD, CD(DONA), ICCEDoula1417288077
  11. Jessica OlsenCounselor1013528140
  12. Nancy Olsen, LPCMental Health Counselor1013394428
  13. Brittany Olson, DOInternal Medicine Physician1679978340
  14. Emily Olson, PA-CPhysician Assistant1386871085
  15. Karin Olszewski, BSNRegistered Nurse1841730322
  16. Hannelore Ondrusek, M.S., LPCProfessional Counselor1003019605
  17. Tiffany OngStudent in an Organized Health Care Education/Training Program1114767159
  18. Naomi Onofrei, PHARMDPharmacist1366311193
  19. Ike Onwere, MDHematology & Oncology Physician1467454025
  20. Deana OrnongCounselor1265027528
  21. Caitlin OrrRegistered Nurse1194344515
  22. Maria Orr, QMHPMental Health Counselor1497192306
  23. Robert Orth, PHARMD STUDENTStudent in an Organized Health Care Education/Training Program1154035590
  24. Molly OrtizSocial Worker1306049432
  25. Julia OrtmanCounselor1942931811
  26. Amanda Orton, LMFTMarriage & Family Therapist1639226020
  27. Elizabeth OsbornCounselor1528805322
  28. Jessica OsbornStudent in an Organized Health Care Education/Training Program1083454029
  29. Anne Oscilia, MSWMental Health Counselor1245775030
  30. Blessing Osondu, M.DInternal Medicine Physician1588014419
  31. Ann Ossinger, RDHDental Hygienist1376837187
  32. Justin OstrowskiOther Specialist/Technologist1255782686
  33. Ildiko OverbayProfessional Counselor1295975597
  34. Rachel OverstreetBehavior Analyst1477099406
  35. Zerin OwenBehavior Technician1083594238
  36. Rebakah Owen-Thayer, M.D.Internal Medicine Physician1285676072
  37. Samantha OwirkaCounselor1518483221
  38. Harry Oxenhandler, MDGeneral Practice Physician1144309113
  39. Kara Oyer, MACounselor1083443345
  40. Michael Oyster, LPC, CADC IIIMental Health Counselor1821114836
  41. Sandra PaceAttendant Care Provider1376857391
  42. Lauren Paciulla, MS, RDRegistered Dietitian1033847900
  43. Carmen PackMental Health Counselor1265070825
  44. Tiara Packer, PA-CSurgical Physician Assistant1447313010
  45. Renee PadiaStudent in an Organized Health Care Education/Training Program1568108728
  46. Desirae PadillaCounselor1508122003
  47. Jariko PadillaMental Health Counselor1346022217
  48. Rodney Padron PerezStudent in an Organized Health Care Education/Training Program1477343812
  49. Angelina PaduaCounselor1700515954
  50. Dora Paez, CMAHome Health Aide1013562701

The largest Oregon cities

  1. Portland42,088
  2. Eugene8,239
  3. Salem6,700
  4. Bend5,313
  5. Medford4,542

All of Oregon →

How to read this directory

Corvallis, Oregon appears in the CMS National Plan and Provider Enumeration System with 4,096 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 Corvallis - 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 Corvallis 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 Corvallis is weighted toward Counselor (763 clinicians, followed by Mental Health Counselor with 297 and Social Worker with 231). 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 Oregon's population, Corvallis reports roughly 96.8 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 Oregon's most common specialties, Peer Specialist is the most prominent one with no provider currently listing a Corvallis practice address, a coverage gap Corvallis patients typically fill by traveling to a larger nearby hub.

For Corvallis 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 Corvallis, OR?

There are 4,096 registered healthcare providers in Corvallis, OR, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Corvallis?

The most common specialties in Corvallis are Counselor, Mental Health Counselor, Social Worker, Student in an Organized Health Care Education/Training Program, Physical Therapist. Counselor has the most providers with 763.

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.