William J. Barlow, MD

NPI 1700073251ActiveIndividual· Internal Medicine, Gastroenterology· St Augustine, FL

Internal Medicine, Gastroenterology (MD) in St Augustine, Florida, trained at University of Kansas School of Med (Kc/Wich/Sal) (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $841,713 for 1,167 claims, against $160,784 paid for services in 2024. Abbvie Inc. was the largest of 8 companies reporting payments in 2025, $290.87 in all, mostly food and beverage.

Overview

NPI	1700073251
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Sep 28, 2007
Last updated in NPPES	Jan 22, 2025
Certified by provider	Jan 22, 2025

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	ME0099996	FL

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 10, 2026	No match	—
New York OMIG · Nov 10, 2026	No match	—
Ohio Medicaid · Nov 10, 2026	No match	—
Pennsylvania Medicheck · Nov 10, 2026	No match	—
Washington HCA · Nov 10, 2026	No match	—

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

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Gastroenterology (FL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	514
Services billed	2,955 across 37 procedure codes
Paid by Medicare	$160,784

Part D prescriptions in 2024

Prescriptions (claims)	1,167 · 2,140 30-day fills
Patients	410
Total drug cost	$841,713
Generic share	72% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Kansas School of Med (Kc/Wich/Sal)
Graduation year	1999
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth