Sean Timothy Brennan, PA-C

NPI 1255342556ActiveIndividual· Physician Assistant, Surgical· Windsor, CT

Physician Assistant, Surgical (PA-C) with Hartford Healthcare Medical Group Specialists PLLC, practicing in Windsor, Connecticut. 107 Medicare patients in 2024, $15,892 paid; nearly all of their 301 Part D prescriptions were generic (96%). Lists Hartford Hospital as a hospital affiliation.

Overview

NPI	1255342556
Status	Active
Entity type	Individual
Credential	PA-C
Sole proprietor	No
NPI issued	Aug 11, 2006
Last updated in NPPES	Mar 11, 2009

Specialties and licenses

Taxonomy	Code	License	State
Physician Assistant, Surgical Primary	363AS0400X	000964	CT

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 - Physician Assistant (CT)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	107
Services billed	178 across 18 procedure codes
Paid by Medicare	$15,892

Part D prescriptions in 2024

Prescriptions (claims)	301 · 344 30-day fills
Patients	143
Total drug cost	$5,953
Generic share	96% of claims

Medicare sources and data years

Education and affiliations

Graduation year	2000
Medicare specialty	Physician Assistant

Medical group

Hartford Healthcare Medical Group Specialists PLLCBridgeport, CT · 1,588 clinicians

Hospital affiliation

Hartford HospitalHartford, CT

Source: CMS Care Compare

Industry payments (Open Payments)

None reported for 2025 or 2024.

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records