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Thomas Markus Fandel, M.D.

NPI 1952833931ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· San Jose, CA

Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in San Jose, California, licensed in CA, with an NPI issued in March 2017. Part D covered 6,234 prescriptions written in 2024, 50% of them generic. Novo Nordisk Inc was the largest of 26 companies reporting payments in 2025, $3,388 in all, mostly food and beverage.

Overview

NPI1952833931
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedMar 30, 2017
Last updated in NPPESJul 9, 2022
Certified by providerJul 9, 2022

Specialties and licenses

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 Order and Referring Only - Internal Medicine (CT)

Part D prescriptions in 2024

Prescriptions (claims)6,234 · 14,841 30-day fills
Patients555
Total drug cost$3,219,839
Generic share50% of claims

Medicare sources and data years

Industry payments (Open Payments)

  • 2025$3,388 · 131 payments from 26 companies
  • 2024$2,377 · 93 payments from 25 companies

Top paying companies in 2025

CompanyAmountPayments
Novo Nordisk Inc$716.5930
Amgen Inc.$572.4626
Madrigal Pharmaceuticals$329.168
Lilly USA, LLC$266.8912
Sanofi-Aventis U.S. LLC$234.303

What the 2025 payments were for

  • Food and Beverage$3,378 · 130 payments
  • Education$10.02 · 1 payment

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

Other endocrinologists in San Jose

All 21 endocrinologists in San Jose · All endocrinologists in California