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Andrew E. Werchniak, MD

NPI 1023075710ActiveIndividual· Dermatology· Portsmouth, NH

Dermatology (MD) in Portsmouth, New Hampshire, trained at University of Virginia School of Medicine (class of 2002). 1,427 Medicare patients in 2024, $280,915 paid; nearly all of their 965 Part D prescriptions were generic (90%). Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $40.54 in all, mostly food and beverage.

Overview

NPI1023075710
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedApr 27, 2006
Last updated in NPPESOct 2, 2025
Certified by providerOct 2, 2025

Specialties and licenses

TaxonomyCodeLicenseState
Dermatology Primary207N00000X11723NH
Dermatology207N00000X220406MA

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 4, 2026No match—
New York OMIG · Nov 4, 2026No match—
Ohio Medicaid · Nov 4, 2026No match—
Pennsylvania Medicheck · Nov 4, 2026No match—
Washington HCA · Nov 4, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Practitioner - Dermatology (NH)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients1,427
Services billed8,074 across 36 procedure codes
Paid by Medicare$280,915

Part D prescriptions in 2024

Prescriptions (claims)965 · 1,263 30-day fills
Patients400
Total drug cost$397,275
Generic share90% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Virginia School of Medicine
Graduation year2002
Medicare specialtyDermatology

Medical groups

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$40.54 · 3 payments from 2 companies

Top paying companies in 2025

CompanyAmountPayments
Abbvie Inc.$34.722
Organon LLC$5.821

What the 2025 payments were for

  • Food and Beverage$40.54 · 3 payments

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

Other Dermatology providers in Portsmouth

All Dermatology providers in New Hampshire →