Surgeon profile

Gregory Gerrish, M.D.

General Surgery · Watertown, SD 57201NPI 1992097703

Database refreshed July 2026Live NPPES registry· Industry payments CY2025ⓘ sources

Contactverified live in NPPES · Jul 8, 2026

Active NPI401 9TH AVE. NW, WATERTOWN, SD 57201☎ 605-882-7000

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Operates atCMS affiliations, refreshed monthly

PRAIRIE LAKES HEALTHCARE SYSTEM, INC · WATERTOWN, SDORTONVILLE AREA HEALTH SERVICES · ORTONVILLE, MNMILBANK AREA HOSPITAL/AVERA HEALTH · MILBANK, SD

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Tracked procedure volumes

Latest federal claims release with year-over-year momentum. Eight device-heavy specialties tracked — more coming.

148 Medicare cases/yr

145 patients

4 procedures

Procedure	Cases	Trend	Patients
Upper GI Endoscopy (EGD) with Biopsy CPT 43239	62	▲ +11%	60
Colonoscopy with Polypectomy (Snare) CPT 45385	55	▲ +10%	54
Colonoscopy with Biopsy CPT 45380	18	▼ -33%	18
Laparoscopic Cholecystectomy CPT 47562	13	new	13

CMS Open Payments, CY2025 general payments (published June 2026) — who already pays this surgeon.

$268 total received, 2025

9 payments

6 manufacturer relationships on file

See exactly which companies pay this surgeon — and how much — with a paid plan.

7-year payment trajectory (who's warming up, who's cooling off on this surgeon) is a paid feature. Unlock

Pulling CY2025 industry payments + 7-year history…