Katherine Nonna Parenti, MD

NPI 1922264605ActiveIndividual· Family Medicine· Hoffman Estates, IL

Family Medicine (MD) in Hoffman Estates, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $590,385 for 4,708 claims, against $143,165 paid for services in 2024. Exact Sciences Corporation reported $32.50 in payments in 2025, mostly food and beverage.

Overview

NPI	1922264605
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Aug 1, 2008
Last updated in NPPES	Aug 16, 2023
Certified by provider	Aug 16, 2023

Specialties and licenses

Taxonomy	Code	License	State
Family Medicine Primary	207Q00000X	036-124528	IL
Student in an Organized Health Care Education/Training Program	390200000X	036-124528	IL
Student in an Organized Health Care Education/Training Program	390200000X	125-052839	IL

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 - Family Practice (IL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	398
Services billed	4,556 across 88 procedure codes
Paid by Medicare	$143,165

Part D prescriptions in 2024

Prescriptions (claims)	4,708 · 13,017 30-day fills
Patients	497
Total drug cost	$590,385
Generic share	90% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Graduation year	2007
Medicare specialty	Family Practice
Telehealth	Offers telehealth