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Aaron Andrew Dwan, MD

NPI 1871152967ActiveIndividual· Dermatology· Saint Peters, MO

Dermatology (MD) in Saint Peters, Missouri, trained at University of Missouri, Columbia School of Medicine (class of 2019). Their prescriptions cost Medicare Part D more than their services did: $341,156 for 2,230 claims, against $218,929 paid for services in 2024. Janssen Biotech, Inc. was the largest of 15 companies reporting payments in 2025, $1,446 in all, mostly food and beverage.

Overview

NPI1871152967
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedJun 11, 2019
Last updated in NPPESAug 14, 2024
Certified by providerAug 14, 2024

Specialties and licenses

TaxonomyCodeLicenseState
Dermatology Primary207N00000X2023028787MO

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 - Dermatology (MO)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients1,191
Services billed4,825 across 64 procedure codes
Paid by Medicare$218,929

Part D prescriptions in 2024

Prescriptions (claims)2,230 · 2,953 30-day fills
Patients757
Total drug cost$341,156
Generic share96% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Missouri, Columbia School of Medicine
Graduation year2019
Medicare specialtyDermatology

Medical group

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$1,446 · 86 payments from 15 companies
  • 2024$2,936 · 173 payments from 17 companies

Top paying companies in 2025

CompanyAmountPayments
Janssen Biotech, Inc.$315.6320
Novartis Pharmaceuticals Corporation$286.4313
Abbvie Inc.$236.1616
Amgen Inc.$142.369
Lilly USA, LLC$104.815

What the 2025 payments were for

  • Food and Beverage$1,361 · 85 payments
  • Education$84.99 · 1 payment

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

Other Dermatology providers in Saint Peters

All Dermatology providers in Missouri →