William Curtis Biggs, M.D.

NPI 1033280862ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Amarillo, TX

Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Amarillo, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $1,635,745 for 4,349 claims, against $481,703 paid for services in 2024. Insulet Corporation was the largest of 22 companies reporting payments in 2025, $3,560 in all, mostly food and beverage.

Overview

NPI	1033280862
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Nov 13, 2006
Last updated in NPPES	Aug 2, 2026
Certified by provider	Aug 2, 2026

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Endocrinology, Diabetes & Metabolism Primary	207RE0101X	G3157	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 - Endocrinology (TX)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	825
Services billed	22,206 across 107 procedure codes
Paid by Medicare	$481,703

Part D prescriptions in 2024

Prescriptions (claims)	4,349 · 10,648 30-day fills
Patients	576
Total drug cost	$1,635,745
Generic share	51% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Texas Southwestern Medical School at Dallas
Graduation year	1982
Medicare specialty	Endocrinology
Secondary specialties	Internal Medicine, Preventive Medicine