Susan M. Szimonisz, MD

NPI 1285722462ActiveIndividual· Internal Medicine· Williamsville, NY

Internal Medicine (MD) in Williamsville, New York, trained at State University of New York at Buffalo School of Medicine (class of 2000). 263 Medicare patients in 2024, $42,581 paid; nearly all of their 1,067 Part D prescriptions were generic (93%). Regeneron Healthcare Solutions, Inc. was the largest of 2 companies reporting payments in 2025, $153.08 in all, mostly food and beverage.

Overview

NPI	1285722462
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Oct 11, 2006
Last updated in NPPES	Sep 1, 2026
Certified by provider	Sep 1, 2026

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	217784-1	NY
Pediatrics	208000000X	217784-1	NY

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Nov 10, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026	No match	—
New York OMIG · Nov 11, 2026	No match	—
Ohio Medicaid · Nov 11, 2026	No match	—
Pennsylvania Medicheck · Nov 11, 2026	No match	—
Washington HCA · Nov 11, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Internal Medicine (NY)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	263
Services billed	709 across 24 procedure codes
Paid by Medicare	$42,581

Part D prescriptions in 2024

Prescriptions (claims)	1,067 · 1,542 30-day fills
Patients	429
Total drug cost	$25,166
Generic share	93% of claims

Medicare sources and data years

Education and affiliations

Medical school	State University of New York at Buffalo School of Medicine
Graduation year	2000
Medicare specialty	Internal Medicine
Secondary specialties	Pediatric Medicine
Telehealth	Offers telehealth