Diane Joan Brzezinski, D.O.

NPI 1447301544ActiveIndividual· Internal Medicine· Naples, FL

Internal Medicine (D.O.) in Naples, Florida, trained at Des Moines University of Osteopathic Medicine and Health Sciences (class of 1994). In 2024 Medicare paid $306,505 for 736 patients, and Part D covered 5,231 of their prescriptions, 87% of them generic. Pfizer Inc. reported $16.20 in payments in 2025, mostly food and beverage.

Overview

NPI	1447301544
Status	Active
Entity type	Individual
Credential	D.O.
Sole proprietor	No
NPI issued	Jan 15, 2007
Last updated in NPPES	Apr 23, 2020
Certified by provider	Apr 23, 2020

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	OS7847	FL

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 (FL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	736
Services billed	5,095 across 48 procedure codes
Paid by Medicare	$306,505

Part D prescriptions in 2024

Prescriptions (claims)	5,231 · 14,286 30-day fills
Patients	618
Total drug cost	$436,350
Generic share	87% of claims

Medicare sources and data years

Education and affiliations

Medical school	Des Moines University of Osteopathic Medicine and Health Sciences
Graduation year	1994
Medicare specialty	Internal Medicine
Telehealth	Offers telehealth