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Douglas B. Aach, MD

NPI 1508817040ActiveIndividual· Surgery· Shiloh, IL

Surgery (MD) in Shiloh, Illinois, trained at University of Missouri, Kansas City, School of Medicine (class of 1986). 152 Medicare patients in 2024, $44,752 paid; all of their 65 Part D prescriptions were generic.

Overview

NPI1508817040
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedMay 12, 2006
Last updated in NPPESMar 20, 2024

Specialties and licenses

TaxonomyCodeLicenseState
Surgery Primary208600000X036082445IL

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 4, 2026No match—
New York OMIG · Nov 4, 2026No match—
Ohio Medicaid · Nov 4, 2026No match—
Pennsylvania Medicheck · Nov 4, 2026No match—
Washington HCA · Nov 4, 2026No match—

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

Medicare

Enrollment (PECOS)Enrolled Practitioner - General Surgery (IL)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients152
Services billed333 across 28 procedure codes
Paid by Medicare$44,752

Part D prescriptions in 2024

Prescriptions (claims)65 · 65 30-day fills
Patients56
Total drug cost$147.04
Generic share100% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Missouri, Kansas City, School of Medicine
Graduation year1986
Medicare specialtyGeneral Surgery

Medical group

Hospital affiliations

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

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