Jason H. Karlawish, MD

NPI 1972546281ActiveIndividual· Internal Medicine, Geriatric Medicine· Philadelphia, PA

Internal Medicine, Geriatric Medicine (MD) in Philadelphia, Pennsylvania, trained at Northwestern University Feinberg Medical School (class of 1991). 44 Medicare patients in 2024, $6,286 paid; nearly all of their 81 Part D prescriptions were generic (94%). Biogen, Inc. reported $9,147 in payments in 2024, mostly consulting fees.

Overview

NPI	1972546281
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jun 14, 2006
Last updated in NPPES	Sep 27, 2012

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Geriatric Medicine Primary	207RG0300X	MD063243L	PA

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 - Geriatric Medicine (PA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	44
Services billed	85 across 3 procedure codes
Paid by Medicare	$6,286

Part D prescriptions in 2024

Prescriptions (claims)	81 · 141 30-day fills
Patients	26
Total drug cost	$2,998
Generic share	94% of claims

Medicare sources and data years

Education and affiliations

Medical school	Northwestern University Feinberg Medical School
Graduation year	1991
Medicare specialty	Geriatric Medicine
Secondary specialties	Internal Medicine