NPPES file of Aug 9, 2026

Emergency Medicine Physician in Colorado

1,434 NPPES records list emergency medicine physician with a practice address in Colorado, 24 per 100,000 residents, the 18th 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 29.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207P00000X · 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, 287

  1. Denver287
  2. Aurora246
  3. Colorado Springs145
  4. Fort Collins67
  5. Lakewood56

Emergency Medicine Physician records in Colorado

  1. Steven AaronsonDenver, CO 802181326081951
  2. Lauren AbbateAurora, CO 800451255624276
  3. Jean Abbott, MDAurora, CO 800451578672820
  4. Kalen AbbottAurora, CO 800121174899314
  5. William Abbott, M.D.Aurora, CO 800141013992361
  6. Charles Abramson, D.O.Glenwood Springs, CO 816011932335023
  7. Alan Adams, MDSalida, CO 812011912972365
  8. Bruce Adams, M.D.Denver, CO 802181407946197
  9. Sabrina Adams, M.D.Denver, CO 802041174822373
  10. Erik Adler, M.D.Denver, CO 802041699909739
  11. Natasha Aguirre, MDAurora, CO 800451184251563
  12. Justin Ahn, M.D.Denver, CO 802041407101629
  13. Nils Albert, MDLakewood, CO 802151952310633
  14. Natasha Allison, MDFirestone, CO 805041609018316
  15. Tania Allison, MDDenver, CO 802041780386896
  16. Peter Alsharif, MDDenver, CO 802041003445834
  17. Jacob Altholz, MDAurora, CO 800451629655279
  18. Westin Amberge, M.D., M.B.A.Grand Junction, CO 815011700176690
  19. Stefen Ammon, MDLittleton, CO 801221730210733
  20. Jordan Ancmon, DOLafayette, CO 800261184284515
  21. Ainsley Anderson, M.D.Denver, CO 802181558756569
  22. Arian Anderson, MDAurora, CO 800451033643101
  23. Britney Anderson, MDAurora, CO 800451851509269
  24. Michael Anderson, MDRidgway, CO 814321659346377
  25. Nathan Anderson, MDSteamboat Springs, CO 804871568566180
  26. Robert Anderson, MDKremmling, CO 804591184708133
  27. Jonathan Andrick, M.D.Lakewood, CO 802281376832873
  28. Matthew Angelidis, MDColorado Springs, CO 809091912057647
  29. Barbara Antuna, MDLittleton, CO 801221477527117
  30. Jonathan Apfelbaum, MDLittleton, CO 801221790745867
  31. Michael ApostleFort Collins, CO 805241952326407
  32. Paige ArcheyAurora, CO 800121083697783
  33. Carlos ArguellesFort Collins, CO 805241417962960
  34. Daniel ArguelloFort Collins, CO 805241609069376
  35. Jason Armstrong, NPLittleton, CO 801221578539276
  36. Leslie ArmstrongLongmont, CO 805011578730958
  37. Kenton Asche, D.O.Cortez, CO 813211609210749
  38. Tom Ashar, MDDenver, CO 802491205888187
  39. Gerard AshbeckLone Tree, CO 801241043293756
  40. Brayden Ashdown, MDDenver, CO 802041407352628
  41. Everett AustinFort Collins, CO 805241548503758
  42. David Avner, MDAurora, CO 800451134106966
  43. Joseph Ayers, D.O.Aspen, CO 816111912909136
  44. Philippe AyresDenver, CO 802041891321337
  45. Melissa AzerThornton, CO 802291780669770
  46. Michael Baier, DOAurora, CO 800451467713883
  47. Garrett Baker, DOThornton, CO 802411962997601
  48. Jeffrey BakerLoveland, CO 805381124052949
  49. Jennifer BakerColorado Springs, CO 809091992916811
  50. Paul Baker, MDColorado Springs, CO 809071992753271

Source: CMS NPPES, primary taxonomy 207P00000X: records by practice city and the list of records, file of Aug 9, 2026.

Colorado ranks 18 of 51 per resident

  1. Alaska25
  2. Wisconsin25
  3. New Mexico24
  4. Colorado24
  5. Delaware24
  6. Minnesota23
  7. 50 states and D.C.21

Source: CMS NPPES, primary taxonomy 207P00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

77.0% of these records appear in a Medicare file, against 81.5% 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. Colorado77.0%
  2. United States81.5%

Emergency Medicine Physician records in Colorado, measured

  • In a Medicare file1,104 of 1,434 · 77.0% here, 81.5% nationally
  • In the CMS Doctors and Clinicians file811 · 56.6% here, 58.7% nationally
  • Not updated in five years or more842 · 58.7% here, 54.8% nationally
  • Median graduation year2011 · the 810 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207P00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,434 NPPES records list emergency medicine physician (207P00000X) as their primary taxonomy with a practice address in Colorado: 24 per 100,000 residents against 21 nationally (50 states and D.C.). Denver has 287 of them (20%).

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. Washington1,459
  2. Missouri1,405
  3. Wisconsin1,464
  4. Arizona1,494

States with a similar rate per 100,000

  1. New Mexico24.5
  2. Alaska25.0
  3. New Hampshire25.0
  4. Delaware23.5

The largest states

  1. California7,751
  2. New York5,025
  3. Texas4,885
  4. Florida4,034
  5. Pennsylvania3,911

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.