Surgeon profile
William Dierenfeldt, MD
Gastroenterology · Manhattan, KS 66502NPI 1477591634
Database refreshed July 2026Live NPPES registry· Industry payments CY2025ⓘ sources
Checking live NPPES registry…
Loading hospital affiliations…
Tracked procedure volumes
Latest federal claims release with year-over-year momentum. Eight device-heavy specialties tracked — more coming.
610 Medicare cases/yr
607 patients
3 procedures
| Procedure | Cases | Trend | Patients |
|---|---|---|---|
| Colonoscopy with Polypectomy (Snare) CPT 45385 | 270 | ≈ flat | 270 |
| Upper GI Endoscopy (EGD) with Biopsy CPT 43239 | 254 | ≈ flat | 251 |
| Colonoscopy with Biopsy CPT 45380 | 86 | ≈ flat | 86 |
Industry relationships
CMS Open Payments, CY2025 general payments (published June 2026) — who already pays this surgeon.
Pulling CY2025 industry payments + 7-year history…