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

Pathology

Brigid M. Hannahoe, MD

Works at hospitals in Buffalo, NY · Warsaw, NY · New York

Summary

Dr. Brigid M. Hannahoe, MD is a pathologist at 100 High St, Buffalo, NY 14203. Phone: (716) 859-5600. Accepts Medicare assignment. In 2024, Brigid M. Hannahoe had 305 Original Medicare patients and 735 services. NPI 1568678399. 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: Pathologist (Medicare lists Pathology)
  • Address: 100 High St, Buffalo, NY 14203 · Directions (3 more locations)
  • Phone: (716) 859‑5600
  • Medicare: Accepts Medicare assignment
  • Hospitals: Erie County Medical Center, Kaleida Health, Wyoming County
  • Group practice: University at Buffalo Pathologists Inc
  • Medical school: State University Of New York At Buffalo School Of Medicine · graduated 2001 (25 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Brigid M. Hannahoe, 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 Brigid M. Hannahoe accept Medicare assignment?
Yes. Medicare's clinician data says Brigid M. Hannahoe 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 Brigid M. Hannahoe see?
In 2024, CMS data shows 305 Original Medicare patients and 735 services for Brigid M. Hannahoe. This counts Original Medicare only and measures volume, not quality.
What is Brigid M. Hannahoe's NPI number?
1568678399. 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 Brigid M. Hannahoe, 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 patients305
Services billed to Medicare735
Different services or procedures21
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Pathology examination of tissue using a microscope, intermediate complexity (88305)432 services
  2. Pathology examination of tissue using a microscope, moderately high complexity (88307)80 services
  3. Special stained specimen slides to examine tissue, initial procedure (88342)60 services
  4. Special stained specimen slides to examine tissue, each additional procedure (88341)41 services
  5. Screening test for antibody to noninfectious agent (86255)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 cholesterol75%
  • Arthritis50%
  • Ischemic heart disease40%
  • Chronic kidney disease40%
  • Anxiety38%

Hospitals where Brigid M. Hannahoe works

Medicare's Facility Affiliation Data lists Brigid M. Hannahoe 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.

  • Erie County Medical CenterBuffalo, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330219
  • Kaleida HealthBuffalo, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330005
  • Wyoming CountyWarsaw, NY · Critical Access Hospital · Emergency services: listed by Medicare · CCN 331323

Practice locations

Addresses where Brigid M. Hannahoe is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Brigid M. Hannahoe as a member of this group (CMS data updated October 2, 2026).

  • University at Buffalo Pathologists Inc23 clinicians in the group

Specialties

Find other Pathology doctors in New York →

Other pathologists in Buffalo

Clinicians with the same Medicare primary specialty in Buffalo, NY — not a recommendation.

All pathologists in Buffalo →

Other clinicians in University at Buffalo Pathologists Inc

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

Clinician information

CredentialMD
Medical schoolState University Of New York At Buffalo School Of Medicine
Graduation year2001 (25 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1568678399
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