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Chau L Chen, MD

NPI 1760570071ActiveIndividual· Internal Medicine· St Louis, MO

Internal Medicine (MD) in St Louis, Missouri, licensed in MO, CA and IL, with an NPI issued in October 2006. Their prescriptions cost Medicare Part D more than their services did: $10,852 for 402 claims, against $3,539 paid for services in 2024.

Overview

NPI1760570071
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedOct 11, 2006
Last updated in NPPESJul 8, 2007

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000X35577MO
Internal Medicine207R00000XC51929CA
Internal Medicine207R00000X53838IL

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 (MO)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients20
Services billed109 across 8 procedure codes
Paid by Medicare$3,539

Part D prescriptions in 2024

Prescriptions (claims)402 · 827 30-day fills
Patients43
Total drug cost$10,852
Generic share94% of claims

Medicare sources and data years

Education and affiliations

Graduation year1966
Medicare specialtyInternal Medicine

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 St Louis

All 71 internal medicine physicians in St Louis · All internal medicine physicians in Missouri