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Kathlyn Diefenderfer, MD

NPI 1780606426ActiveIndividual· Internal Medicine· Enterprise, AL

Internal Medicine (MD) in Enterprise, Alabama, trained at University of South Alabama College of Medicine (class of 1998). 156 Medicare patients in 2024, $41,232 paid; nearly all of their 893 Part D prescriptions were generic (91%).

Overview

NPI1780606426
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedJul 24, 2006
Last updated in NPPESNov 9, 2007

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000X00023919AL

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 (AL)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients156
Services billed432 across 9 procedure codes
Paid by Medicare$41,232

Part D prescriptions in 2024

Prescriptions (claims)893 · 1,062 30-day fills
Patients249
Total drug cost$44,903
Generic share91% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of South Alabama College of Medicine
Graduation year1998
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 Enterprise

All Internal Medicine providers in Alabama →