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William Hahn, M.D.

NPI 1386215655ActiveIndividual· Internal Medicine, Infectious Disease· Santa Barbara, CA

Internal Medicine, Infectious Disease (M.D.) in Santa Barbara, California, licensed in LA, with an NPI issued in July 2021. Part D covered 21 prescriptions written in 2024, 67% of them generic. Gilead Sciences, Inc. reported $89.34 in payments in 2025, mostly food and beverage.

Overview

NPI1386215655
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedJul 7, 2021
Last updated in NPPESAug 19, 2026
Certified by providerAug 19, 2026

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Infectious Disease Primary207RI0200X353196LA

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

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

Medicare

Enrollment (PECOS)Not in the public enrollment file of Oct 1, 2026

Part D prescriptions in 2024

Prescriptions (claims)21 · 21 30-day fills
Total drug cost$10,479
Generic share67% of claims

Medicare sources and data years

Industry payments (Open Payments)

  • 2025$89.34 · 1 payment from 1 company

Top paying companies in 2025

CompanyAmountPayments
Gilead Sciences, Inc.$89.341

What the 2025 payments were for

  • Food and Beverage$89.34 · 1 payment

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

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