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 31 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. Chelsea Ratliff, MDDenver, CO 802181184251910
  2. Karen Ratner, MDLittleton, CO 801221740391739
  3. Joseph Raycroft, M.D.Boulder, CO 803031881081107
  4. Henry Raymundo, MDDenver, CO 802181972647584
  5. Mitra Razzaghi, MDAurora, CO 800451154411734
  6. Allison Reddinger, M.D.Wheat Ridge, CO 800331669430138
  7. Ashwini Reddy, M.D.Denver, CO 802101891834727
  8. Neha ReddyDenver, CO 802301295025583
  9. Sridhar Reddy, MDColorado Springs, CO 809071033268040
  10. Swarupa Reddy, MDWestminster, CO 802341760519797
  11. Tanya Reddy, M.D.Denver, CO 802471225492689
  12. Kay Redman, MDLimon, CO 808281154321818
  13. Paul Redstone, MDAurora, CO 800451669581914
  14. Robert Reeves, M.D.Colorado Springs, CO 809101033114053
  15. Martha Regan-Smith, M.D.Westminster, CO 800311710179379
  16. Leslie RegerLafayette, CO 800261144350992
  17. Carol ReidDenver, CO 802471659408672
  18. Christina Reimer, MDFort Collins, CO 805281336139039
  19. Logan ReimerPueblo, CO 810031134653876
  20. Randolph Reims, MDLafayette, CO 800261356448807
  21. Sarah Reingold, MDDenver, CO 802041124522149
  22. Marcus Reinhardt, M.D.Greeley, CO 806311356349823
  23. Matthew Reisinger, M.D.Denver, CO 802201629311345
  24. James Reitman, MDUsaf Academy, CO 808401457341174
  25. Kristina Reitz, MDParker, CO 801381669483004
  26. Matthew Remakus, M.D.Delta, CO 814161790911683
  27. Rachel Resnick, DODenver, CO 802181770169625
  28. Kenneth Reynolds, MDMount Crested Butte, CO 812251205001658
  29. Thomas Reynolds, D.O.Lone Tree, CO 801241720471600
  30. Helen RhoBoulder, CO 803041710305073
  31. Kimberly RhoadesAurora, CO 800111639213416
  32. Phillip Rhoads, MDLoveland, CO 805381407804503
  33. Robert Rice, MDAlamosa, CO 811011780645754
  34. Robin Richard, MDCortez, CO 813211306916218
  35. Karen Richardson, MDDenver, CO 802471407983075
  36. Terri Richardson, MDDenver, CO 802471124155148
  37. Samuel Richesin, M.D.Denver, CO 802051336313196
  38. Daniel Richlie, MDDenver, CO 802201104857291
  39. Karen RiderLittleton, CO 801231386771319
  40. Jessica Ridgley, D.O.Lone Tree, CO 801241306076054
  41. Bhimesh RijalWestminster, CO 802341639829823
  42. Sean Riley, MDAurora, CO 800141801926746
  43. Travis Rinderle, DOAurora, CO 800451063972750
  44. Laura Risch, DOAurora, CO 800151902302367
  45. Anita Ritenour, MDLongmont, CO 805041093784357
  46. Olivia RivalskyColorado Springs, CO 809091588027775
  47. Rebecca Rivkin, DODenver, CO 802181487781464
  48. Alizeh Rizvi, M.DPueblo, CO 810031740846047
  49. Dwight Robertson, M.D.Colorado Springs, CO 809201740276179
  50. Ian Robertson, MDCentennial, CO 801221376686824

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.