Ank Elisabeth Nijhawan, M.D.

NPI 1023099116ActiveIndividual· Internal Medicine, Infectious Disease· Dallas, TX

Internal Medicine, Infectious Disease (M.D.) in Dallas, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $620,644 for 786 claims, against $1,996 paid for services in 2024. Gilead Sciences, Inc. reported $8,436 in payments in 2024, mostly consulting fees.

Overview

NPI	1023099116
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Nov 7, 2005
Last updated in NPPES	Dec 13, 2011

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Infectious Disease Primary	207RI0200X	L7243	TX
Internal Medicine, Infectious Disease	207RI0200X	225851	MA
Internal Medicine	207R00000X	L7243	TX

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Oct 9, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 4, 2026	No match	—
New York OMIG · Nov 4, 2026	No match	—
Ohio Medicaid · Nov 4, 2026	No match	—
Pennsylvania Medicheck · Nov 4, 2026	No match	—
Washington HCA · Nov 4, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Infectious Disease (TX)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	15
Services billed	26 across 6 procedure codes
Paid by Medicare	$1,996

Part D prescriptions in 2024

Prescriptions (claims)	786 · 1,015 30-day fills
Patients	26
Total drug cost	$620,644
Generic share	59% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Texas Southwestern Medical School at Dallas
Graduation year	2001
Medicare specialty	Infectious Disease
Secondary specialties	Internal Medicine