Surgeon profile
John Berdahl, M.D.
Ophthalmology · Sioux Falls, SD 57108NPI 1871761577
Database refreshed July 2026Live NPPES registry· Industry payments CY2025ⓘ sources
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Tracked procedure volumes
Latest federal claims release with year-over-year momentum. Eight device-heavy specialties tracked — more coming.
1,214 Medicare cases/yr
812 patients
5 procedures
| Procedure | Cases | Trend | Patients |
|---|---|---|---|
| Cataract Surgery with IOL CPT 66984 | 742 | ▼ -11% | 412 |
| YAG Laser Capsulotomy CPT 66821 | 245 | ▼ -7% | 243 |
| Cataract Surgery with MIGS Stent CPT 66991 | 159 | ▼ -6% | 95 |
| Complex Cataract Surgery CPT 66982 | 41 | ▲ +17% | 35 |
| SLT — Laser Trabeculoplasty CPT 65855 | 27 | ▼ -10% | 27 |
Industry relationships
CMS Open Payments, CY2025 general payments (published June 2026) — who already pays this surgeon.
Pulling CY2025 industry payments + 7-year history…