NPPES file of Aug 9, 2026

Anesthesiology Physician in Colorado

1,202 NPPES records list anesthesiology physician with a practice address in Colorado, 20 per 100,000 residents, the 12th highest rate of 51. Denver and Aurora have the most; each record links to the provider's NPI and the Colorado license search. Page 1 of 25.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207L00000X · 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, 225

  1. Denver225
  2. Aurora163
  3. Greenwood Village155
  4. Colorado Springs120
  5. Fort Collins66

Anesthesiology Physician records in Colorado

  1. Benjamin Aakre, MDAurora, CO 800451407140395
  2. Richard Abbott, MDGreenwood Village, CO 801111508839333
  3. James Abercrombie, MDColorado Springs, CO 809091184204711
  4. Benjamin Abrams, MDAurora, CO 800451619316742
  5. Peter Abromaitis, M.D.Wheat Ridge, CO 800331205277449
  6. David Abts, M.D.Aurora, CO 800451598086118
  7. Henri Acosta, MDGreenwood Village, CO 801111114073798
  8. Ryan Adams, MDFort Collins, CO 805241154448611
  9. Aaron Adler, MDBoulder, CO 803031932738358
  10. Aalok Agarwala, MDAurora, CO 800451699801068
  11. Bryan Ahlgren, DOAurora, CO 800451730208315
  12. Maarij Ahmad, DOGreenwood Village, CO 801111073176228
  13. Sarah Al-Najar, MDDenver, CO 802111396373866
  14. Richard Alessi, M.D.Fort Collins, CO 805241063409860
  15. Alexandru Alexa, M.D.Colorado Springs, CO 809091699160838
  16. Barbara Allen, MDDenver, CO 802031285610246
  17. Darin Allen, MDLongmont, CO 805031780946053
  18. Russell Allen, MDColorado Springs, CO 809091013968403
  19. Sigma Alpha, MDGrand Junction, CO 815011497715759
  20. Nicholas Alvey, MDGreenwood Village, CO 801111992232383
  21. Seth Aly, M.D.Aurora, CO 800451992168611
  22. Mark Anders, MDColorado Springs, CO 809091912957226
  23. Ian Anderson, M.D.Fort Collins, CO 805241629277678
  24. Janeen Anderson, MDEnglewood, CO 801101144242421
  25. Raleigh Anderson, M.D.Aurora, CO 800451821451543
  26. Ryan Anderson, D.O.Fort Carson, CO 809131598129256
  27. Bryce Andrus, MDColorado Springs, CO 809091114941465
  28. Jose Angel, MDBoulder, CO 803041972543254
  29. Dianne Ansari Winn, MDWheat Ridge, CO 800331396720298
  30. Steven Antonovich, D.O.Castle Rock, CO 801091376924449
  31. Jennifer Appelman, MDSteamboat Springs, CO 804871598992117
  32. Nathan Applegren, M.D.Greenwood Village, CO 801111023679651
  33. Ross Appleyard, MDDenver, CO 802031023094430
  34. Nicole Arboleda, M.D.Denver, CO 802041154498731
  35. Lee Arensberg, MDEnglewood, CO 801101700864949
  36. Tanya Argo, M.D.Parker, CO 801381992752513
  37. Grant Armour, MDGrand Junction, CO 815011467747238
  38. John Armstrong, MDAurora, CO 800451881709152
  39. Donna Arnett, M.D.Englewood, CO 801131285608166
  40. Brook Arnold, M.D.Fort Collins, CO 805241235369927
  41. Kevin Arnold, M.D.Aurora, CO 800451922268473
  42. Sanjay Arora, M DGolden, CO 804011700861614
  43. Kellie Arpin, MDDenver, CO 802051992997134
  44. Michael Ash, MDGrand Junction, CO 815011528022365
  45. Sameh Assad, MDPueblo, CO 810031699745406
  46. Leigh Atkinson, MDGolden, CO 804011629086152
  47. Benjamin Atwood, M.D.Denver, CO 802471104104306
  48. Lee Anne Auerhan, M.D.Wheat Ridge, CO 800331437196094
  49. Kimberly Aut, MDColorado Springs, CO 809091396208575
  50. Patrick AutruongGreenwood Village, CO 801111972130961

Source: CMS NPPES, primary taxonomy 207L00000X: records by practice city and the list of records, file of Aug 9, 2026.

Colorado ranks 12 of 51 per resident

  1. Indiana21
  2. Vermont21
  3. Illinois21
  4. Colorado20
  5. Maryland20
  6. Maine20
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 207L00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

74.7% of these records appear in a Medicare file, against 73.7% 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. Colorado74.7%
  2. United States73.7%

Anesthesiology Physician records in Colorado, measured

  • In a Medicare file898 of 1,202 · 74.7% here, 73.7% nationally
  • In the CMS Doctors and Clinicians file824 · 68.6% here, 67.2% nationally
  • Not updated in five years or more731 · 60.8% here, 57.8% nationally
  • Median graduation year2006 · the 824 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207L00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,202 NPPES records list anesthesiology physician (207L00000X) as their primary taxonomy with a practice address in Colorado: 20 per 100,000 residents against 18 nationally (50 states and D.C.). Denver has 225 of them (19%).

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. Missouri1,153
  2. Maryland1,253
  3. Wisconsin1,313
  4. Minnesota1,042

States with a similar rate per 100,000

  1. Illinois20.5
  2. Maine20.1
  3. Vermont20.9
  4. Montana20.0

The largest states

  1. California7,571
  2. New York5,062
  3. Texas4,635
  4. Florida3,375
  5. Illinois2,575

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.