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Mark Spencer, MD

NPI 1508818097ActiveIndividual· Anesthesiology· Hartford, CT

Anesthesiology (MD) in Hartford, Connecticut, trained at Georgetown University School of Medicine (class of 1991). 169 Medicare patients in 2024, $20,625 paid; nearly all of their 164 Part D prescriptions were generic (95%). Axogen was the largest of 5 companies reporting payments in 2025, $267.74 in all, mostly food and beverage.

Overview

NPI1508818097
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedMay 16, 2006
Last updated in NPPESJul 13, 2026

Specialties and licenses

TaxonomyCodeLicenseState
Anesthesiology Primary207L00000X033719CT

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 - Anesthesiology (CT); Practitioner - Anesthesiology (MA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients169
Services billed247 across 50 procedure codes
Paid by Medicare$20,625

Part D prescriptions in 2024

Prescriptions (claims)164 · 191 30-day fills
Patients28
Total drug cost$3,321
Generic share95% of claims

Medicare sources and data years

Education and affiliations

Medical schoolGeorgetown University School of Medicine
Graduation year1991
Medicare specialtyAnesthesiology
TelehealthOffers telehealth

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$267.74 · 5 payments from 5 companies
  • 2024$107.46 · 5 payments from 1 company

Top paying companies in 2025

CompanyAmountPayments
Axogen$155.791
Janssen Biotech, Inc.$33.601
Merck Sharp & Dohme LLC$30.731
Abbvie Inc.$24.611
Conmed Corporation$23.011

What the 2025 payments were for

  • Food and Beverage$267.74 · 5 payments

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

Other anesthesiologists in Hartford

All 118 anesthesiologists in Hartford · All anesthesiologists in Connecticut