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 41 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. Christine WoodenAurora, CO 800141396872271
  2. Tambra Woods, MDGreenwood Village, CO 801111871632034
  3. Ashley WoodworthLakewood, CO 802141962964221
  4. Amie Woody, D.O.Colorado Springs, CO 809031053846246
  5. Frederick Workman, DOColorado Springs, CO 809071023001948
  6. Bob Worley, M.D.Greenwood Village, CO 801111811927510
  7. Jason Worley, MDAurora, CO 800451922701150
  8. George Worthen, MDDenver, CO 802061699845123
  9. Camilla Wright, MDHighlands Ranch, CO 801291194941815
  10. Daniel Wright, MDDenver, CO 802051245379643
  11. John Wu, M.D.Denver, CO 802191518930395
  12. Tiffany Wyatt, DOGrand Junction, CO 815061326622820
  13. Matthew Wynia, MDAurora, CO 800451477616993
  14. Heidi Xavier, MDDenver, CO 802471134275720
  15. Linda Yamamoto, MDMorrison, CO 804651023821188
  16. Diane Yang, MD, MPHLone Tree, CO 801241306072202
  17. Nima Yazdani, MDGreenwood Village, CO 801111013063601
  18. Mengistu Yemane, M.D.Denver, CO 802051174595607
  19. Jennifer York, D.O.Glenwood Springs, CO 816011174792113
  20. Madeline Youakim, MDDenver, CO 802181720737208
  21. Amy Yu, MDAurora, CO 800451053738237
  22. David Yu, M.D.Littleton, CO 801201114182003
  23. Matthew YurkewiczLone Tree, CO 801241285374926
  24. Kara ZabelnyColorado Springs, CO 809071962897876
  25. Eric Zacharias, M.D.Boulder, CO 803041750365367
  26. Lusine Zakharian, DOUsaf Academy, CO 808401336773555
  27. Tuongvy Zamurs, DOGolden, CO 804011124467808
  28. Nayeli Zarate, MDPueblo, CO 810031346700523
  29. Masoud Zarezadeh MehriziAurora, CO 800121720311194
  30. Nikki Zarling, MDAurora, CO 800451154950806
  31. Steven Zeiler, MDWheat Ridge, CO 800331003850066
  32. Daniel Zenk, MDGreeley, CO 806311326026956
  33. Kayleigh Zerr, D.O.Pueblo, CO 810031932547130
  34. Judy Zerzan-Thul, MDAurora, CO 800451730290727
  35. Allan Zevelev, DOLakewood, CO 802261467140707
  36. Xu Zhang, DOColorado Springs, CO 809091578141586
  37. Christopher Zill, M.D.Colorado Springs, CO 809071518018167
  38. Susan Zimet, M.D.Aspen, CO 816111063418242
  39. Kevin ZimmermanAurora, CO 800141336283035
  40. Jennifer Ziouras, MDAurora, CO 800111619976099
  41. Ali Zirakzadeh, M.D.Boulder, CO 803031609846567
  42. Christopher Zirker, MD, MSCLoveland, CO 805381629565890
  43. Regina ZogloAurora, CO 800141366585812
  44. Soada Zubair, M.D.Denver, CO 802091265681126
  45. Gary Zuehlsdorff, DOThornton, CO 802291134247471
  46. Oren Zwang, MDCherry Hills Village, CO 801131659585859

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.