William Watterson, M.D.

NPI 1578588976ActiveIndividual· Internal Medicine· Midlothian, VA

Internal Medicine (M.D.) in Midlothian, Virginia, trained at Virginia Commonwealth University, School of Medicine (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $242,041 for 3,048 claims, against $58,729 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 21 companies reporting payments in 2025, $1,816 in all, mostly food and beverage.

Overview

NPI	1578588976
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	Yes
NPI issued	Jul 13, 2006
Last updated in NPPES	Jul 14, 2011

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	101052275	VA
Emergency Medicine	207P00000X	0101052275	VA
Pediatrics	208000000X	101052275	VA

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 (VA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	144
Services billed	1,635 across 60 procedure codes
Paid by Medicare	$58,729

Part D prescriptions in 2024

Prescriptions (claims)	3,048 · 5,837 30-day fills
Patients	159
Total drug cost	$242,041
Generic share	89% of claims

Medicare sources and data years

Education and affiliations

Medical school	Virginia Commonwealth University, School of Medicine
Graduation year	1993
Medicare specialty	Internal Medicine
Secondary specialties	Emergency Medicine, Pediatric Medicine
Telehealth	Offers telehealth