Surgeon profile

Margaret Greven, M.D.

Ophthalmology · Winston Salem, NC 27157NPI 1821380874

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

Contactverified live in NPPES · Jul 7, 2026

Active NPIMEDICAL CENTER BLVD DEPT OF OPHTHALMOLOGY, WINSTON SALEM, NC 27157☎ 336-716-4091

Checking live NPPES registry…

Operates atCMS affiliations, refreshed monthly

NORTH CAROLINA BAPTIST HOSPITAL · WINSTON-SALEM, NCNOVANT HEALTH FORSYTH MEDICAL CENTER · WINSTON-SALEM, NC

Loading hospital affiliations…

Tracked procedure volumes

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

731 Medicare cases/yr

170 patients

1 procedure

Procedure	Cases	Trend	Patients
Intravitreal Injection (Anti-VEGF) CPT 67028	731	▼ -14%	170

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

$429 total received, 2025

3 payments

3 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…