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 38 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. Betsy Thompson, MDAlamosa, CO 811011023140175
  2. Keith Thompson, MDGreeley, CO 806341861470478
  3. Leigh Thompson, MDHighlands Ranch, CO 801291215986690
  4. Lisa Thompson, MDAurora, CO 800451174940316
  5. Kimberly Tibbs, MDColorado Springs, CO 809201013968346
  6. Kelli Tichy, DODenver, CO 802181437733664
  7. Meghan Timmerman, D.O.Pueblo, CO 810031326309576
  8. Stephanus Tjan, M.D.Littleton, CO 801211609888429
  9. Mary ToddLittleton, CO 801231033249891
  10. Anastassia TodorGolden, CO 804031710155015
  11. Kayla Toennis, DOPueblo, CO 810031023542412
  12. Tamara Togliatti, MDLone Tree, CO 801241306802244
  13. Rebecca Tolby, M.D.Grand Junction, CO 815061932158763
  14. Kenneth Tompkins, M.D.Greenwood Village, CO 801111548586050
  15. Jay Tonne, MDPueblo, CO 810031194852335
  16. Alexandria Topolko, MDLakewood, CO 802281649433574
  17. Anthony Tormey, MDAurora, CO 800121063586154
  18. Robert Tramaloni, MDUsaf Academy, CO 808401245212927
  19. Angela Tran, D.O.Castle Rock, CO 801081679765739
  20. Mi Tran, MDBrighton, CO 806011871098087
  21. Benjamin Trefilek, MDDenver, CO 802041487187365
  22. Sara Trigero, M.D.Aurora, CO 800451558651653
  23. Christopher Trojanovich, M.D.Boulder, CO 803031518087915
  24. Adam Trosterman, MDAurora, CO 800451164512745
  25. Christine Trowbridge, MDLittleton, CO 801271225165228
  26. Jordan Troy, DOHighlands Ranch, CO 801291538749981
  27. Garland Truitt, M.D.Denver, CO 802221629104658
  28. Katherine Tsai, M.D.Denver, CO 802301316084205
  29. Livia Tsien, MDFort Collins, CO 805281689013229
  30. Jeffrey Turk, M.D.Parker, CO 801381427017268
  31. Paige Turk, M.D.Parker, CO 801381154390474
  32. Joseph Turner, MDLakewood, CO 802281073593216
  33. David Tuuk, M.D.Golden, CO 804031164554358
  34. Theresa TylerLongmont, CO 805031023152741
  35. Ashley Ullrich, M.D.Aurora, CO 800451366837627
  36. Jean UngerWestminster, CO 802341952438962
  37. Peter Urffer, MDLongmont, CO 805041447320155
  38. Jeanette Valentin, M.D.Colorado Springs, CO 809091952300485
  39. James Valin, MDBroomfield, CO 800211255314035
  40. Santhosh Valloppillil, M.D.Englewood, CO 801131568519825
  41. Andrew Van Boening, D.O.Pueblo, CO 810031366978090
  42. Anthony Van Goor, M.D., MMM, FACPLoveland, CO 805371598724437
  43. Kory VanderschaafLakewood, CO 802261811190135
  44. Sarah Vanduzer-Moore, M.D.Denver, CO 802091548225972
  45. Larry Vanvleet, MDLafayette, CO 800261417176678
  46. Alfredo Vargas, MDPueblo, CO 810011396753521
  47. Robert Varnum, MDColorado Springs, CO 809071942353339
  48. Mamta Varshney, M.D.Aurora, CO 800121205869443
  49. Sara Vatan, MDDenver, CO 802221215348222
  50. Vincent Vaughn, D.O.Pueblo, CO 810031134660400

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.