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Internal Medicine

Claire J. Carlo, MD

Works at hospitals in Boston, MA · Massachusetts

Summary

Dr. Claire J. Carlo, MD is an internal medicine doctor at 112 Southampton St, Boston, MA 02118. Phone: (617) 534-2881. Accepts Medicare assignment. In 2024, Claire J. Carlo had 18 Original Medicare patients and 34 services. NPI 1336125871. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 112 Southampton St, Boston, MA 02118 · Directions (3 more locations)
  • Phone: (617) 534‑2881
  • Medicare: Accepts Medicare assignment
  • Hospital: Boston Medical Center
  • Group practice: Boston Health Care for the Homeless Program, Inc.
  • Medical school: New York Medical College · graduated 1985 (41 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Claire J. Carlo, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Claire J. Carlo accept Medicare assignment?
Yes. Medicare's clinician data says Claire J. Carlo accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Claire J. Carlo see?
In 2024, CMS data shows 18 Original Medicare patients and 34 services for Claire J. Carlo. This counts Original Medicare only and measures volume, not quality.
What is Claire J. Carlo's NPI number?
1336125871. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Claire J. Carlo, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients18
Services billed to Medicare34
Different services or procedures11
Participating Medicare providerYes
Average age of these patients64

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol61%

Hospitals where Claire J. Carlo works

Medicare's Facility Affiliation Data lists Claire J. Carlo at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Boston Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220031

Practice locations

Addresses where Claire J. Carlo is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Claire J. Carlo as a member of this group (CMS data updated October 2, 2026).

  • Boston Health Care for the Homeless Program, Inc.72 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Boston

Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.

All internal medicine doctors in Boston →

Other clinicians in Boston Health Care for the Homeless Program, Inc.

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolNew York Medical College
Graduation year1985 (41 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1336125871
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians