NPI Lens

Peter M. Grinspoon, M.D.

NPI 1952560310ActiveIndividual· Internal Medicine· Chelsea, MA

Internal Medicine (M.D.) in Chelsea, Massachusetts, trained at Boston University School of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $235,653 for 1,390 claims, against $11,187 paid for services in 2024.

Overview

NPI1952560310
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedJun 2, 2008
Last updated in NPPESFeb 14, 2014

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XP-204412MA

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 - Internal Medicine (MA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients69
Services billed112 across 3 procedure codes
Paid by Medicare$11,187

Part D prescriptions in 2024

Prescriptions (claims)1,390 · 2,784 30-day fills
Patients157
Total drug cost$235,653
Generic share80% of claims

Medicare sources and data years

Education and affiliations

Medical schoolBoston University School of Medicine
Graduation year1997
Medicare specialtyInternal Medicine
TelehealthOffers telehealth

Medical group

Hospital affiliations

Other facilities

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 Internal Medicine providers in Chelsea

All Internal Medicine providers in Massachusetts →