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John Edward Mendelson, MD

NPI 1891889341ActiveIndividual· Internal Medicine· San Francisco, CA

Internal Medicine (MD) in San Francisco, California, trained at University of California, San Francisco School of Medicine (class of 1982). Part D covered 99 prescriptions written in 2024, 100% of them generic.

Overview

NPI1891889341
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorYes
NPI issuedOct 2, 2006
Last updated in NPPESFeb 5, 2008

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XG49959CA
Internal Medicine, Addiction Medicine207RA0401XG49959CA

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)Enrolled Practitioner - Internal Medicine (CA)

Part D prescriptions in 2024

Prescriptions (claims)99 · 167 30-day fills
Patients32
Total drug cost$3,340
Generic share100% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of California, San Francisco School of Medicine
Graduation year1982
Medicare specialtyInternal Medicine
Secondary specialtiesAddiction Medicine
TelehealthOffers telehealth

Medical group

Source: CMS Care Compare

Industry payments (Open Payments)

None reported for 2025 or 2024.

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

Other internal medicine physicians in San Francisco

All 1,457 internal medicine physicians in San Francisco · All internal medicine physicians in California