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Marc A. Ciampi, M.D.

NPI 1366444135ActiveIndividual· Internal Medicine, Nephrology· Waterbury, CT

Internal Medicine, Nephrology (M.D.) in Waterbury, Connecticut, trained at Creighton University School of Medicine (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $873,008 for 4,771 claims, against $319,591 paid for services in 2024. Amgen Inc. was the largest of 16 companies reporting payments in 2025, $761.17 in all, mostly food and beverage.

Overview

NPI1366444135
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedAug 11, 2005
Last updated in NPPESJul 8, 2007

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Nephrology Primary207RN0300X037620CT

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 - Nephrology (CT)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients347
Services billed5,930 across 50 procedure codes
Paid by Medicare$319,591

Part D prescriptions in 2024

Prescriptions (claims)4,771 · 10,860 30-day fills
Patients464
Total drug cost$873,008
Generic share82% of claims

Medicare sources and data years

Education and affiliations

Medical schoolCreighton University School of Medicine
Graduation year1996
Medicare specialtyNephrology
Secondary specialtiesInternal Medicine

Medical group

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$761.17 · 29 payments from 16 companies
  • 2024$1,005 · 43 payments from 16 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$760.78 · 28 payments
  • Education$0.39 · 1 payment

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

Other nephrologists in Waterbury

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