NPPES file of Aug 9, 2026

Gastroenterology Physician in Colorado

334 NPPES records list gastroenterology physician with a practice address in Colorado, 5.7 per 100,000 residents, the 22nd highest rate of 51. Denver and Aurora have the most; each record links to the provider's NPI and the Colorado license search. Page 6 of 7.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RG0100X · 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, 59

  1. Denver59
  2. Aurora42
  3. Colorado Springs33
  4. Lone Tree25
  5. Lafayette17

Gastroenterology Physician records in Colorado

  1. James Rhee, MDLittleton, CO 801201033105531
  2. John Riopelle, DOLone Tree, CO 801241851428882
  3. Anthony Robateau Colon, MDLone Tree, CO 801241750841730
  4. Richard Roman, M.DEnglewood, CO 801131972616399
  5. James RoseColorado Springs, CO 809071740299957
  6. Laura Rosenberg, M.D.Castle Rock, CO 801091912197005
  7. Barry Ross, M.D.Denver, CO 802101699714931
  8. Michael RowleyColorado Springs, CO 809071255593950
  9. Kevin Rufner, MD, MPHDenver, CO 802181427195718
  10. Charles Ruzkowski, MDPueblo, CO 810031669576757
  11. John Sabel, M.DEnglewood, CO 801131629182860
  12. Sarah Safadi, M.D.Denver, CO 802061992117675
  13. Andrew Samuelson, M.D.Lafayette, CO 800261215119516
  14. Philip Sarges, MDGrand Junction, CO 815011538393939
  15. Stuart Saslow, M.D.Durango, CO 813011043290547
  16. David Scheider, M.DLone Tree, CO 801241538273776
  17. Katherine Scholand, M.D.Aurora, CO 800451467816132
  18. Nathan Schomaker, M.D.Lone Tree, CO 801241225472327
  19. Moonkyung Schubert, M.D.Denver, CO 802041235359050
  20. Jack Scolaro, MDDenver, CO 802051083174304
  21. Frank Scott, MDAurora, CO 800451588822878
  22. Steven Seagren, MDGrand Junction, CO 815011184665655
  23. Stephen Sears, MDParker, CO 801381457417594
  24. Matthew Seto, D.O.Lakewood, CO 804011003163486
  25. Noah Settergren, D.O.Greeley, CO 806341285072587
  26. Raj Shah, MDAurora, CO 800451114017894
  27. John Sharp, MDSteamboat Springs, CO 804871326017534
  28. Todd Sheer, M.D.Durango, CO 813011568434702
  29. Maheen Sheikh, M.D.Greeley, CO 806341144540477
  30. Christopher Shepela, MDLone Tree, CO 801241598847311
  31. Howard Sherr, M.D.Cherry Hills Village, CO 801131801283189
  32. William Shields, D.O.Grand Junction, CO 815011245203561
  33. Anju Sidhu, M.D.Colorado Springs, CO 809071114058344
  34. Daniel Siegel, MDDenver, CO 802201174518344
  35. Kevin Sieja, M.D.Denver, CO 802201952356677
  36. Bryan Silon, M.D.Denver, CO 802181144541590
  37. Robert Simmons, MDFort Collins, CO 805251023114832
  38. Robert Simril, MDDenver, CO 802041750886099
  39. Rajiv Singh, MDPueblo, CO 810031386138741
  40. Elizabeth Sofian-Conlan, M.D.Denver, CO 802471457495160
  41. Andrew Spears, M.D.Boulder, CO 803051144249665
  42. Erik Springer, MDLittleton, CO 801201194711622
  43. Leslie Stark, M.D.Denver, CO 802051124155155
  44. Joshua Steinberg, MDNorthglenn, CO 802331154749042
  45. Calen Steiner, MDAurora, CO 800451164800173
  46. Kendra Stilwell, D.O.Usaf Academy, CO 808401578958054
  47. Lewis Strong, MDLoveland, CO 805371265415459
  48. Amanda Sullivan, DOLittleton, CO 801201124557863
  49. Nathan Susnow, MDLafayette, CO 800261396891974
  50. Carl Swendsen, MDColorado Springs, CO 809091891011631

Source: CMS NPPES, primary taxonomy 207RG0100X: records by practice city and the list of records, file of Aug 9, 2026.

Colorado ranks 22 of 51 per resident

  1. Maine6.2
  2. Wisconsin5.8
  3. Louisiana5.8
  4. Colorado5.7
  5. Hawaii5.6
  6. South Carolina5.6
  7. 50 states and D.C.6.2

Source: CMS NPPES, primary taxonomy 207RG0100X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

83.5% of these records appear in a Medicare file, against 84.4% 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. Colorado83.5%
  2. United States84.4%

Gastroenterology Physician records in Colorado, measured

  • In a Medicare file279 of 334 · 83.5% here, 84.4% nationally
  • In the CMS Doctors and Clinicians file258 · 77.2% here, 73.7% nationally
  • Not updated in five years or more162 · 48.5% here, 55.6% nationally
  • Median graduation year2003 · the 258 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RG0100X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

334 NPPES records list gastroenterology physician (207RG0100X) as their primary taxonomy with a practice address in Colorado: 5.7 per 100,000 residents against 6.2 nationally (50 states and D.C.). Denver has 59 of them (18%).

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. Connecticut336
  2. Wisconsin340
  3. South Carolina303
  4. Indiana372

States with a similar rate per 100,000

  1. Hawaii5.6
  2. Louisiana5.8
  3. California5.5
  4. Michigan5.5

The largest states

  1. California2,140
  2. New York1,797
  3. Florida1,513
  4. Texas1,478
  5. Pennsylvania1,049

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.