NPPES file of Aug 9, 2026

Neurological Surgery Physician in Colorado

175 NPPES records list neurological surgery physician with a practice address in Colorado, 3 per 100,000 residents, the 14th highest rate of 51. Aurora and Denver have the most; each record links to the provider's NPI and the Colorado license search. Page 2 of 4.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207T00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Aurora has the most, 50

  1. Aurora50
  2. Denver29
  3. Colorado Springs21
  4. Englewood9
  5. Littleton7

Neurological Surgery Physician records in Colorado

  1. Peter Fecci, MD, PHDAurora, CO 800451245435858
  2. Michele Ferguson, MDLafayette, CO 800261689781098
  3. Zach Folzenlogen, MDAurora, CO 800451710220496
  4. Robert Fox, MDGrand Junction, CO 815011588677017
  5. Herbert Fried, M.D.Littleton, CO 801231417060419
  6. Domenico Gattozzi, M.D.Aurora, CO 800451477965846
  7. Beth Gibbons, M.D.Greeley, CO 806311730300716
  8. Wayne Gluf, MDAurora, CO 800451518930775
  9. Fabio Grassia, MDAurora, CO 800451275141756
  10. Krista Greenan, MDColorado Springs, CO 809091801026992
  11. Abhijeet Gummadavelli, MDLittleton, CO 801221295113405
  12. Hamid Hadi, DOPueblo, CO 810031699260604
  13. Sameah Haider, M.D.Greeley, CO 806311962866780
  14. Ronald Hammers, M.D.Parker, CO 801381730340324
  15. Michael Handler, MDAurora, CO 800451477646826
  16. Todd Hankinson, MDAurora, CO 800451295988962
  17. Yasuaki Harasaki, MDAurora, CO 800451538206883
  18. Adam Hebb, M.D.Denver, CO 802051649461955
  19. Jessa Hoffman, MDAurora, CO 800451558868430
  20. John Hudson, MDLakewood, CO 802281184634537
  21. Joshua Hughes, MDEnglewood, CO 801131982968525
  22. Joseph Illig, M.D.Colorado Springs, CO 809071639171549
  23. Stephen Johnson, M.D.Denver, CO 802181366464794
  24. James Kelly, MDAurora, CO 800451033212832
  25. Robert Kim, MDColorado Springs, CO 809091073975660
  26. Brent Kimball, M.D.Lone Tree, CO 801241083804694
  27. Peter Klara, M.D., PH.D.Colorado Springs, CO 809071871534644
  28. Jack Klem, M.D.Colorado Springs, CO 809071871710004
  29. Dexter Koons, M.D.Pueblo, CO 810031528068228
  30. Daniel Kramer, MDAurora, CO 800451093129629
  31. Lee Krauth, M.D.Rifle, CO 816501134138811
  32. Roderick Lamond, MDDenver, CO 802031972529113
  33. Peter Lennarson, MDAurora, CO 800451013966001
  34. Andrew Levy, MDDenver, CO 802051578573929
  35. Kevin Lillehei, MDAurora, CO 800451225131022
  36. Raymond Lilly, M.D.Pueblo, CO 810031376541094
  37. Chih-Ta Lin, M.D.Longmont, CO 805011265759955
  38. Thomas Lo, MDColorado Springs, CO 809091629285309
  39. William Lu, M.D.Pueblo, CO 810031457300840
  40. Edward Maa, MDDenver, CO 802041053426643
  41. Mark Magner, M.D.Englewood, CO 801131851525497
  42. Aria Mahtabfar, MDAurora, CO 800451659877074
  43. Sean Markey, M.D.Denver, CO 802101235165705
  44. Roberto Masferrer, M.D.Colorado Springs, CO 809071659467520
  45. Edward Maurin, MDGrand Junction, CO 815011730112772
  46. Jason McGowan, M.D.Littleton, CO 801221619233145
  47. William McKay, M.D.Greeley, CO 806311861925695
  48. Michael McKisic, MDColorado Springs, CO 809091497950273
  49. John McVicker, M.D.Colorado Springs, CO 809091811917701
  50. Ricky Medel, M.D.Colorado Springs, CO 809091487858742

Source: CMS NPPES, primary taxonomy 207T00000X: records by practice city and the list of records, file of Aug 9, 2026.

Colorado ranks 14 of 51 per resident

  1. Illinois3.0
  2. Connecticut3.0
  3. Wisconsin3.0
  4. Colorado3.0
  5. Washington3.0
  6. South Dakota2.9
  7. 50 states and D.C.2.6

Source: CMS NPPES, primary taxonomy 207T00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

73.7% of these records appear in a Medicare file, against 78.8% 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. Colorado73.7%
  2. United States78.8%

Neurological Surgery Physician records in Colorado, measured

  • In a Medicare file129 of 175 · 73.7% here, 78.8% nationally
  • In the CMS Doctors and Clinicians file110 · 62.9% here, 65.8% nationally
  • Not updated in five years or more92 · 52.6% here, 52.5% nationally
  • Median graduation year2006 · the 110 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207T00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

175 NPPES records list neurological surgery physician (207T00000X) as their primary taxonomy with a practice address in Colorado: 3 per 100,000 residents against 2.6 nationally (50 states and D.C.). Aurora has 50 of them (29%).

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. Minnesota174
  2. Wisconsin176
  3. Maryland163
  4. New Jersey190

States with a similar rate per 100,000

  1. Washington3.0
  2. Connecticut3.0
  3. Illinois3.0
  4. South Dakota2.9

The largest states

  1. California929
  2. Texas669
  3. Florida644
  4. New York529
  5. Pennsylvania447

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.