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Mark Alan Prange, MD

NPI 1871607820ActiveIndividual· Internal Medicine, Geriatric Medicine· San Antonio, TX

Internal Medicine, Geriatric Medicine (MD) in San Antonio, Texas, trained at University of Texas Medical School at San Antonio (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $297,658 for 4,939 claims, against $26,653 paid for services in 2024.

Overview

NPI1871607820
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedAug 18, 2006
Last updated in NPPESMar 17, 2018

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Geriatric Medicine Primary207RG0300XH2696TX

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 (TX)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients72
Services billed376 across 7 procedure codes
Paid by Medicare$26,653

Part D prescriptions in 2024

Prescriptions (claims)4,939 · 5,147 30-day fills
Patients95
Total drug cost$297,658
Generic share85% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Texas Medical School at San Antonio
Graduation year1986
Medicare specialtyInternal Medicine

Medical groups

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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