Katy Lease Lonergan II, M.D.

NPI 1144394461ActiveIndividual· Internal Medicine, Cardiovascular Disease· Dallas, TX

Internal Medicine, Cardiovascular Disease (M.D.) in Dallas, Texas, trained at Johns Hopkins University School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $413,481 for 2,143 claims, against $87,435 paid for services in 2024. Edwards Lifesciences Corporation reported $152.80 in payments in 2024, mostly food and beverage.

Overview

NPI	1144394461
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Nov 20, 2006
Last updated in NPPES	Nov 28, 2012

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Cardiovascular Disease Primary	207RC0000X	P4341	TX
Hospitalist	208M00000X	A86361	CA
Internal Medicine, Cardiovascular Disease	207RC0000X	A86361	CA
Internal Medicine	207R00000X	P4341	TX

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 - Cardiovascular Disease (Cardiology) (TX)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	1,048
Services billed	1,698 across 33 procedure codes
Paid by Medicare	$87,435

Part D prescriptions in 2024

Prescriptions (claims)	2,143 · 5,456 30-day fills
Patients	299
Total drug cost	$413,481
Generic share	82% of claims

Medicare sources and data years

Education and affiliations

Medical school	Johns Hopkins University School of Medicine
Graduation year	2002
Medicare specialty	Cardiovascular Disease (Cardiology)
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth