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Jason Kolfenbach, MD

NPI 1487791752ActiveIndividual· Internal Medicine, Rheumatology· Aurora, CO

Internal Medicine, Rheumatology (MD) in Aurora, Colorado, trained at University of Iowa, Rj & L Carver College of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $1,078,472 for 732 claims, against $28,535 paid for services in 2024.

Overview

NPI1487791752
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedJan 30, 2007
Last updated in NPPESNov 26, 2012

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Rheumatology Primary207RR0500X45847CO

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 - Rheumatology (CO)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients175
Services billed354 across 18 procedure codes
Paid by Medicare$28,535

Part D prescriptions in 2024

Prescriptions (claims)732 · 1,542 30-day fills
Patients149
Total drug cost$1,078,472
Generic share73% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Iowa, Rj & L Carver College of Medicine
Graduation year2004
Medicare specialtyRheumatology
Secondary specialtiesInternal Medicine
TelehealthOffers telehealth

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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