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John Eric Ammon, M.D.

NPI 1215973524ActiveIndividual· Internal Medicine· Birmingham, AL

Internal Medicine (M.D.) in Birmingham, Alabama, trained at University of Mississippi School of Medicine (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $834,801 for 7,633 claims, against $118,374 paid for services in 2024. Pfizer Inc. was the largest of 15 companies reporting payments in 2025, $897.76 in all, mostly food and beverage.

Overview

NPI1215973524
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedJun 22, 2006
Last updated in NPPESMar 18, 2021
Certified by providerMar 18, 2021

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000X18194AL

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 (AL)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients174
Services billed4,549 across 149 procedure codes
Paid by Medicare$118,374

Part D prescriptions in 2024

Prescriptions (claims)7,633 · 17,271 30-day fills
Patients451
Total drug cost$834,801
Generic share84% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Mississippi School of Medicine
Graduation year1993
Medicare specialtyInternal Medicine
TelehealthOffers telehealth

Medical groups

Hospital affiliation

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$897.76 · 45 payments from 15 companies
  • 2024$1,012 · 57 payments from 15 companies

Top paying companies in 2025

CompanyAmountPayments
Pfizer Inc.$274.3914
Abbott Laboratories$125.731
Abbvie Inc.$102.367
Lilly USA, LLC$60.504
Glaxosmithkline, LLC.$56.463

What the 2025 payments were for

  • Food and Beverage$897.76 · 45 payments

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other Internal Medicine providers in Birmingham

All Internal Medicine providers in Alabama →