NPPES file of Aug 9, 2026

Internal Medicine Physician in Oregon

2,116 NPPES records list internal medicine physician with a practice address in Oregon, 50 per 100,000 residents, the 13th highest rate of 51. Portland and Corvallis have the most; each record links to the provider's NPI and the Oregon license search. Page 7 of 43.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Portland has the most, 889

  1. Portland889
  2. Corvallis129
  3. Clackamas101
  4. Bend97
  5. Salem86

Internal Medicine Physician records in Oregon

  1. Fernando Cendejas, MDMedford, OR 975041710900147
  2. Stephanie Cha, MDClackamas, OR 970151902832371
  3. Smitha Chadaga, MDPortland, OR 972271952362295
  4. Megan Chalupsky, MDPortland, OR 972251215436159
  5. Lauren Champion, D.O.Portland, OR 972101902218340
  6. Brian Chan, M.D.Portland, OR 972391588981625
  7. Cynthia Chan, MDClackamas, OR 970151912090895
  8. Wiley Chan, MDPortland, OR 972321669588828
  9. Stacy Chance, MDEugene, OR 974011356399190
  10. Rebecca Chandler, MDPortland, OR 972131770513368
  11. Robin Chandler, M.D.Keizer, OR 973031770522609
  12. Sumitra Chandrasekaran, MDPortland, OR 972271225184815
  13. Jahnavi Chandrashekar, MDPortland, OR 972251427442664
  14. Courtney Chason, DOCorvallis, OR 973301053057091
  15. Tom Chau, M.D.Portland, OR 972251629259916
  16. Rayaan Asad Chaudhry, MDGrants Pass, OR 975271821765108
  17. Amy Chaumeton, M.D.Gresham, OR 970301033183918
  18. Briana Chavez, DOCorvallis, OR 973301891485553
  19. Aaron Chavira, DOCorvallis, OR 973301780061812
  20. Yohalakshmi Chelladurai, MBBS, MPHSalem, OR 973011760801054
  21. Cherry Chen, M.D.Portland, OR 972251730445727
  22. Frank Chen, M.D.Clackamas, OR 970151144484767
  23. John Chen, MDPortland, OR 972271154437945
  24. Michael Chen, M.D.Stayton, OR 973831619926011
  25. Shuang Chen, MDBeaverton, OR 970061477202224
  26. Vincent Chen, M.D.Portland, OR 972101932563616
  27. Swapna Chennareddygari, MBBSMilwaukie, OR 972221558565150
  28. Theresa ChiappePortland, OR 972021326712381
  29. Palaniappan Chidambaram, M.D.Portland, OR 972131770651200
  30. Vivian ChidiMedford, OR 975041457517849
  31. David Childers, MDPortland, OR 972131043401029
  32. Homer Chin, MDPortland, OR 972321376572537
  33. Joseph Chiovaro, MDTigard, OR 972241669647830
  34. Julien Chirouze, DONewberg, OR 971321407273543
  35. Hyun Cho, DOPortland, OR 972131437747524
  36. Sharon Choe, MDPortland, OR 972131174318299
  37. Aisha Chohan, MDHillsboro, OR 971241043454051
  38. Myung Sun Choi, MDPortland, OR 972251538520440
  39. Christine Choo, MDClackamas, OR 970151932215951
  40. Meei Choong, MDPortland, OR 972191386644896
  41. Roger Chou, MDPortland, OR 972391184639601
  42. Auria Meher Chowdhury, MDSalem, OR 973061851961551
  43. Masuma Chowdhury, M.D.Hillsboro, OR 971231861572604
  44. Mustaquim Chowdhury, MDHillsboro, OR 971231033223656
  45. Tapati Chowdhury, MDHillsboro, OR 971241184287021
  46. Charles Christensen, MDKlamath Falls, OR 976011801970983
  47. Jeness Christensen, MDBend, OR 977021376506444
  48. Stefan ChristisonPortland, OR 972091639586191
  49. Maryanne Chumpia, M.D.Portland, OR 972251932499167
  50. Truman Ray Chun, DOCorvallis, OR 973301588248355

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

Oregon ranks 13 of 51 per resident

  1. Michigan57
  2. Pennsylvania56
  3. Vermont50
  4. Oregon50
  5. New Jersey50
  6. New Hampshire48
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

72.8% of these records appear in a Medicare file, against 78.7% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Oregon72.8%
  2. United States78.7%

Internal Medicine Physician records in Oregon, measured

  • In a Medicare file1,540 of 2,116 · 72.8% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file1,232 · 58.2% here, 61.4% nationally
  • Not updated in five years or more1,234 · 58.3% here, 55.4% nationally
  • Median graduation year2008 · the 1,232 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,116 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Oregon: 50 per 100,000 residents against 44 nationally (50 states and D.C.). Portland has 889 of them (42%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Indiana2,109
  2. Wisconsin2,078
  3. Colorado2,046
  4. South Carolina1,881

States with a similar rate per 100,000

  1. American Samoa50.1
  2. New Jersey49.9
  3. Vermont50.4
  4. New Hampshire48.0

The largest states

  1. California17,696
  2. New York12,067
  3. Florida10,151
  4. Texas9,175
  5. Pennsylvania7,300

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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.