Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Pathology

Gabriel K. Griffin, MD

Works at hospitals in Boston, MA · Massachusetts

Summary

Dr. Gabriel K. Griffin, MD is a pathologist at 75 Francis St, Boston, MA 02115. Phone: (617) 732-5500. Accepts Medicare assignment. In 2024, Gabriel K. Griffin had 192 Original Medicare patients and 291 services. NPI 1639508484. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Gabriel K. Griffin, 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 Gabriel K. Griffin accept Medicare assignment?
Yes. Medicare's clinician data says Gabriel K. Griffin 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 Gabriel K. Griffin see?
In 2024, CMS data shows 192 Original Medicare patients and 291 services for Gabriel K. Griffin. This counts Original Medicare only and measures volume, not quality.
What is Gabriel K. Griffin's NPI number?
1639508484. 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 Gabriel K. Griffin, 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 patients192
Services billed to Medicare291
Different services or procedures13
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Molecular pathology procedure; physician interpretation and report (G0452)175 services
  2. Special stained specimen slides to examine tissue including interpretation and report (88313)25 services
  3. Pathology examination of tissue using a microscope, intermediate complexity (88305)19 services
  4. Preparation of tissue for examination by removing any calcium present (88311)19 services

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 cholesterol74%
  • Arthritis47%
  • Chronic kidney disease42%
  • Ischemic heart disease35%
  • Anxiety33%

Hospitals where Gabriel K. Griffin works

Medicare's Facility Affiliation Data lists Gabriel K. Griffin 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.

Practice locations

Addresses where Gabriel K. Griffin is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Gabriel K. Griffin as a member of this group (CMS data updated October 2, 2026).

  • Brigham and Womens Physicians Organization Inc2,994 clinicians in the group

Specialties

Find other Pathology doctors in Massachusetts →

Other pathologists in Boston

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

All pathologists in Boston →

Other clinicians in Brigham and Womens Physicians Organization Inc

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

Clinician information

CredentialMD
Medical schoolDuke University School Of Medicine
Graduation year2013 (13 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1639508484
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