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Ronnie C. Marrache, MD

NPI 1821172396ActiveIndividual· Hospitalist· Waterville, ME

Hospitalist (MD) with Adventist Health System Georgia Inc, practicing in Waterville, Maine. Mostly services rather than prescriptions: Medicare paid $2,639 for 36 patients in 2024, with only 31 Part D claims. Lists Adventhealth Gordon and 3 other hospitals as hospital affiliations.

Overview

NPI1821172396
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedOct 24, 2006
Last updated in NPPESMay 24, 2017

Specialties and licenses

TaxonomyCodeLicenseState
Hospitalist Primary208M00000X040730GA
Internal Medicine207R00000X014513ME

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 - Hospitalist (FL); Practitioner - Internal Medicine (GA); Practitioner - Hospitalist (ID); Practitioner - Internal Medicine (ME); Practitioner - Hospitalist (NH)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients36
Services billed38 across 5 procedure codes
Paid by Medicare$2,639

Part D prescriptions in 2024

Prescriptions (claims)31 · 31 30-day fills
Total drug cost$181.45
Generic share100% of claims

Medicare sources and data years

Education and affiliations

Graduation year1994
Medicare specialtyInternal Medicine

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

None reported for 2025 or 2024.

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

Other hospitalists in Waterville

All hospitalists in Maine