Highest-Volume Complex Cataract Surgery Surgeons in Illinois (2026 update)
136 Illinois providers billed Medicare for Complex Cataract Surgery (CPT 66982) 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 | Patrick Differding, MD | Aurora, IL | 382 |
| 2 | Linda Auer, DO | Galesburg, IL | 230 |
| 3 | John Hahn, M.D. | Sterling, IL | 140 |
| 4 | Whitney Marlow, M.D. | O Fallon, IL | 122 |
| 5 | Nicholas Chan, M.D. | Oak Lawn, IL | 115 |
| 6 | Kenneth Barba, M.D. | Bloomington, IL | 106 |
| 7 | Michael Stock, MD | O Fallon, IL | 100 |
| 8 | Bradley Sacher, MD | Wheaton, IL | 100 |
| 9 | John Moy, MD | Park Ridge, IL | 89 |
| 10 | Lucas Wendel, M.D. | St Charles, IL | 76 |
126 more Illinois 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 Complex Cataract Surgery in Illinois?
- 136 Illinois providers billed Medicare for Complex Cataract Surgery (CPT 66982) 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.