NPPES file of Aug 9, 2026

Internal Medicine Physician in Colorado

2,046 NPPES records list internal medicine physician with a practice address in Colorado, 35 per 100,000 residents, the 35th highest rate of 51. Denver and Aurora have the most; each record links to the provider's NPI and the Colorado license search. Page 2 of 41.

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).

Denver has the most, 493

  1. Denver493
  2. Aurora244
  3. Colorado Springs169
  4. Pueblo91
  5. Boulder74

Internal Medicine Physician records in Colorado

  1. Sophia Ambruso, D.O.Littleton, CO 801271518250174
  2. Gregory Ambuske, D.O.Colorado Springs, CO 809231093920746
  3. Dipesh Amin, MDDenver, CO 802471518004886
  4. Paul Ammatelli, M.D.Colorado Springs, CO 809201558357764
  5. Tiffany Ancheril, MDWestminster, CO 800311417006768
  6. Craig Anderson, MDDenver, CO 802111477541365
  7. Jamie Anderson, M.D.Denver, CO 802091639324304
  8. Judith Anderson, M.D.Greeley, CO 806341780809848
  9. Karen Anderson, MDAurora, CO 800121336276377
  10. Kenneth Anderson, D.O.Gunnison, CO 812301629399456
  11. Melver Anderson, M.D.Aurora, CO 800451992771109
  12. Robert Anderson, MDAurora, CO 800451467542142
  13. Kandace AnichBoulder, CO 803031609903640
  14. Elena Anisimova, M.D.Denver, CO 802311770564437
  15. August Anneberg, M.D.Denver, CO 802181225000508
  16. David Ansley, DOColorado Springs, CO 809091952806697
  17. Kristina Anton-Schnell, MDBoulder, CO 803011477577153
  18. Sheila Antony, MDGlendale, CO 802461083989339
  19. Hasan Aoun, DOPueblo, CO 810031740803154
  20. Richard Apke, M.D.Thornton, CO 802601538148416
  21. Alicia Appel, MDDenver, CO 802041164441754
  22. Matthew Applegate, MDDenver, CO 802181376049387
  23. Masumi Arakane Mancero, MDFort Collins, CO 805251356781959
  24. Maurice Archuleta, MDWheat Ridge, CO 800331336202712
  25. Santiago Arciniegas Torres, MDLongmont, CO 805041467863522
  26. Catherine Ard, MDDenver, CO 802041780144832
  27. Rishi Ariola-Tirella, M.D.Pueblo, CO 810041609162353
  28. Brent Arnold, MDEnglewood, CO 801131912034950
  29. Pratheep Arora, M.D.Colorado Springs, CO 809071467475616
  30. Fernando Arroyo, MDLittleton, CO 801271396962718
  31. Susie Artis, MDAAurora, CO 800151609084847
  32. Yaa Asare, MDAurora, CO 800121730765413
  33. Honor Ashbaugh, MDLongmont, CO 805011396070587
  34. Bree Ashdown, MDDenver, CO 802181083142475
  35. Lev Asherov, MDPueblo, CO 810031164685228
  36. Fatima AshfaqPueblo, CO 810031609713239
  37. Amelia Ashmann, MDArvada, CO 800041437103918
  38. Virginia Augustitus, M.D.Lakewood, CO 802281659373843
  39. Sarah Axelrath, MDDenver, CO 802051497285647
  40. Monica Ayala, DODenver, CO 802181629727284
  41. Nathan Ayer, M.D., M.P.H.Loveland, CO 805381457361172
  42. Mary Ayers, M.D.Aurora, CO 800451184632432
  43. Kourtney Aylor-Lee, DOPueblo, CO 810031396286159
  44. Evan Bachman, MDDelta, CO 814161457972119
  45. David Baez, MDAurora, CO 800121407896830
  46. Christopher Bailey, D.O.Colorado Springs, CO 809091528300571
  47. Jennifer Bajaj, MD, MPHAurora, CO 800141336276344
  48. Jaime Baker, MDDenver, CO 802471558417170
  49. Sandra Baker, M.D.Denver, CO 802201598866949
  50. Amira Bakkar, MDPueblo, CO 810081811598907

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

Colorado ranks 35 of 51 per resident

  1. Georgia35
  2. Wisconsin35
  3. South Carolina35
  4. Colorado35
  5. Kansas34
  6. Kentucky34
  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.

70.8% 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. Colorado70.8%
  2. United States78.7%

Internal Medicine Physician records in Colorado, measured

  • In a Medicare file1,448 of 2,046 · 70.8% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file1,091 · 53.3% here, 61.4% nationally
  • Not updated in five years or more1,240 · 60.6% here, 55.4% nationally
  • Median graduation year2006 · the 1,090 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

2,046 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Colorado: 35 per 100,000 residents against 44 nationally (50 states and D.C.). Denver has 493 of them (24%).

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. Wisconsin2,078
  2. Indiana2,109
  3. Oregon2,116
  4. South Carolina1,881

States with a similar rate per 100,000

  1. Kansas34.3
  2. Georgia35.5
  3. Puerto Rico35.7
  4. Kentucky33.7

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.