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Hau Hien Tan, M.D.

NPI 1912907726ActiveIndividual· Internal Medicine· La Mesa, CA

Internal Medicine (M.D.) in La Mesa, California, trained at R Franklin University of Med & Sci/Chicago Medical School (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $891,522 for 12,968 claims, against $125,209 paid for services in 2024.

Overview

NPI1912907726
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedJul 22, 2005
Last updated in NPPESNov 23, 2022
Certified by providerNov 23, 2022

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XA63428CA

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Oct 9, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026No match—
New York OMIG · Nov 10, 2026No match—
Ohio Medicaid · Nov 10, 2026No match—
Pennsylvania Medicheck · Nov 10, 2026No match—
Washington HCA · Nov 10, 2026No match—

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

Medicare

Enrollment (PECOS)Enrolled Practitioner - Internal Medicine (CA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients265
Services billed1,621 across 33 procedure codes
Paid by Medicare$125,209

Part D prescriptions in 2024

Prescriptions (claims)12,968 · 13,380 30-day fills
Patients341
Total drug cost$891,522
Generic share81% of claims

Medicare sources and data years

Education and affiliations

Medical schoolR Franklin University of Med & Sci/Chicago Medical School
Graduation year1994
Medicare specialtyInternal Medicine

Medical group

Hospital affiliation

Other facilities

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 providers in La Mesa

All Internal Medicine providers in California →