NPPES file of Aug 9, 2026

Doctors and health care providers in Clackamas, OR

2,098 individual NPPES records list a practice address in Clackamas, 12th of 171 Oregon cities. The largest group is pharmacist: 125, 6% of the city's records, against 3% across Oregon. Page 28 of 42.

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

Clackamas in Oregon

  • Rank in Oregon12th of 171 cities by records
  • Share of the state1.7% of Oregon's records
  • Specialties present25 or more taxonomy codes
  • Top three groups15.3% of all records
  • Pharmacist rank5th of the 10 Oregon cities with the most

Compared with Oregon as a whole, Clackamas has 28.3× the state's share of registered respiratory therapist records and 0.20× its share of mental health counselor records.

Providers in Clackamas, alphabetically

  1. Shirley Nord, MSWClinical Social Worker1124276712
  2. Angeline Noriega, CNM, ARNPAdvanced Practice Midwife1659563617
  3. Kyle Norman, M.D.Emergency Medicine Physician1407295322
  4. Karie NosackPharmacist1063217388
  5. Nancy Novig, CRNA, MSCertified Registered Nurse Anesthetist1013029412
  6. James Novotny, FNPFamily Nurse Practitioner1477885218
  7. Nicholas Nunez, M.D.Emergency Medicine Physician1154470672
  8. Wayne Nussbaum, CRNACertified Registered Nurse Anesthetist1730299397
  9. Zenna Nwokoma, APRN-NPFamily Nurse Practitioner1518822618
  10. Douglas O'Dell, M.A.Addiction (Substance Use Disorder) Counselor1720194392
  11. Erin O'Halloran, LMFTMarriage & Family Therapist1720445430
  12. James O'Hern, M.S.W.Clinical Social Worker1821253139
  13. Sara O'Leary, RDRegistered Dietitian1952845547
  14. Leslie O'Meara, M.D.Nephrology Physician1144262932
  15. Charles O'Neal, MDEmergency Medicine Physician1811576093
  16. Christopher Obuchowski, MDDiagnostic Radiology Physician1356354609
  17. Sheba Ochs, PTDADental Assistant1275641755
  18. Valeri Odom, MA, CCC-SLPSpeech-Language Pathologist1578318895
  19. Elizabeth Odonnell, PT, DPTPhysical Therapist1154731420
  20. Yohko OgawaAdvanced Practice Midwife1417694209
  21. Danna Ogden, DOAdult Medicine Physician1700010089
  22. Sanja Ognjenovic, MDEmergency Medicine Physician1952921702
  23. Albert Oh, MDInternal Medicine Physician1396718912
  24. Daniel Oh, MDPsychiatry Physician1740985910
  25. David Ojeda Sersun, CPOProsthetist1720942378
  26. Akintomide OladapoAddiction (Substance Use Disorder) Counselor1548842842
  27. Milette Oliveros, M.D.Neonatal-Perinatal Medicine Physician1548437957
  28. Jeffrey Olson, M.D.Gastroenterology Physician1730380791
  29. Kris Olson, LCSWClinical Social Worker1588832893
  30. Richard Olson, M.D.Geriatric Medicine (Internal Medicine) Physician1891891024
  31. Jodie Oltmans, MDPediatrics Physician1306946017
  32. Linda Onheiber, PA-CMedical Physician Assistant1346340106
  33. Hirohisa Ono, M.D.Specialist1992806830
  34. Joshua Oppenheim, PA-CPhysician Assistant1245725373
  35. Joshua Opperman, DMDGeneral Practice Dentistry1205938016
  36. Elise Ortman, CADC-RCounselor1841034709
  37. David Orzuna PerezPharmacist1942970561
  38. Andrea Osterlund, DOInternal Medicine Physician1447567292
  39. Krzysztof Ostrowski, MDAnesthesiology Physician1225092505
  40. Laura Oswald, LPCProfessional Counselor1083034904
  41. Jeremy Ota, M.D.Emergency Medicine Physician1932201704
  42. Emily OttBehavior Technician1942179452
  43. Melissa Ott, DOSports Medicine (Family Medicine) Physician1952575391
  44. Jesssica Owens, LMTMassage Therapist1679838619
  45. Margaret Owens, CRNACertified Registered Nurse Anesthetist1689080343
  46. Frank Pacosa, P.A.Physician Assistant1821183229
  47. Meghan PadgettBehavior Technician1487599049
  48. Mario PadillaInternal Medicine Physician1023458825
  49. Nicholas Pagliari, CRNACertified Registered Nurse Anesthetist1033627260
  50. Edward PakEmergency Medicine Physician1194353920

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

Clackamas, Oregon appears in the CMS National Plan and Provider Enumeration System with 2,098 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 Clackamas - 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 Clackamas 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 Clackamas is weighted toward Pharmacist (125 clinicians, followed by Internal Medicine Physician with 101 and Emergency Medicine Physician with 94). 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, Clackamas reports roughly 49.6 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, Counselor is the most prominent one with no provider currently listing a Clackamas practice address, a coverage gap Clackamas patients typically fill by traveling to a larger nearby hub.

For Clackamas 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 Clackamas, OR?

There are 2,098 registered healthcare providers in Clackamas, OR, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Clackamas?

The most common specialties in Clackamas are Pharmacist, Internal Medicine Physician, Emergency Medicine Physician, Certified Registered Nurse Anesthetist, Family Medicine Physician. Pharmacist has the most providers with 125.

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.