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William Trent Massengale, MD

NPI 1952398893ActiveIndividual· Dermatology· Prairieville, LA

Dermatology (MD) in Prairieville, Louisiana, trained at Louisiana State University School of Medicine in New Orleans (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $987,929 for 1,932 claims, against $132,756 paid for services in 2024. Galderma Laboratories, L.P. was the largest of 21 companies reporting payments in 2025, $145,997 in all, mostly speaking and faculty fees.

Overview

NPI1952398893
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedOct 5, 2005
Last updated in NPPESAug 22, 2024
Certified by providerAug 22, 2024

Specialties and licenses

TaxonomyCodeLicenseState
Dermatology Primary207N00000X023151LA

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 (LA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients603
Services billed3,396 across 59 procedure codes
Paid by Medicare$132,756

Part D prescriptions in 2024

Prescriptions (claims)1,932 · 2,508 30-day fills
Patients691
Total drug cost$987,929
Generic share91% of claims

Medicare sources and data years

Education and affiliations

Medical schoolLouisiana State University School of Medicine in New Orleans
Graduation year1996
Medicare specialtyDermatology

Medical groups

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$145,997 · 322 payments from 21 companies
  • 2024$47,876 · 251 payments from 22 companies

Top paying companies in 2025

What the 2025 payments were for

  • Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$123,613 · 50 payments
  • Consulting Fee$10,425 · 3 payments
  • Travel and Lodging$5,991 · 12 payments
  • Food and Beverage$5,772 · 255 payments
  • Education$195.57 · 2 payments

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

Other Dermatology providers in Prairieville

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