Highest-Volume Cataract Surgery with IOL Surgeons in Colorado (2026 update)
224 Colorado providers billed Medicare for Cataract Surgery with IOL (CPT 66984) in 2024. The top 10 by case volume are below — the full ranked list, CSV export and competitor-payment intel are available with a DocVol subscription ($199/mo, cancel anytime).
Database refreshed July 2026Live NPPES registryⓘ sources
| # | Surgeon | Location | Medicare cases (2024) |
|---|---|---|---|
| 1 | William Richheimer, M.D. | Sheridan, CO | 958 |
| 2 | Gary Foster, M.D. | Fort Collins, CO | 822 |
| 3 | James Fox, M.D. | Grand Junction, CO | 761 |
| 4 | Cullen Ryburn, M.D. | Loveland, CO | 677 |
| 5 | Carl Johnson, MD | Parker, CO | 627 |
| 6 | Garrett Rota, DO | Colorado Springs, CO | 590 |
| 7 | Jason Wang, MD | Denver, CO | 587 |
| 8 | Carl Tubbs, M.D. | Parker, CO | 532 |
| 9 | Matthew Chang, M.D. | Colorado Springs, CO | 468 |
| 10 | Randall Smith, M.D. | Fort Collins, CO | 443 |
214 more Colorado surgeons in the full list
Plus: who already pays them (Stryker? Medtronic? Arthrex?), CSV export for your CRM, and every other state and procedure.
Search the full databaseFrequently asked questions
- How many surgeons perform Cataract Surgery with IOL in Colorado?
- 224 Colorado providers billed Medicare for Cataract Surgery with IOL (CPT 66984) in CY2024. CMS suppresses providers with 10 or fewer Medicare patients, so the true count is somewhat higher.
- Where does this data come from?
- CMS Medicare Physician & Other Practitioners (fee-for-service Part B claims, CY2024, released May 2026) and CMS Open Payments. Both are official U.S. federal datasets.
- Does this include all of a surgeon's cases?
- No — it covers traditional Medicare only (no Medicare Advantage, commercial, or Medicaid claims). Absolute volumes undercount total practice, but the ranking of high- vs low-volume surgeons is a strong targeting signal.