Quick answers
- Does Ermelinda Bonaccio accept Medicare assignment?
- Yes. Medicare's clinician data says Ermelinda Bonaccio 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 Ermelinda Bonaccio see?
- In 2024, CMS data shows 375 Original Medicare patients and 802 services for Ermelinda Bonaccio. This counts Original Medicare only and measures volume, not quality.
- What is Ermelinda Bonaccio's NPI number?
- 1649275231. 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 Ermelinda Bonaccio, 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 patients | 375 |
|---|---|
| Services billed to Medicare | 802 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Screening mammography (77067)284 services
- Screening 3d breast mammography (77063)281 services
- Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)49 services
- Mri scan of both breasts (77049)44 services
- Limited ultrasound scan of 1 breast (76642)23 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 cholesterol75%
- High blood pressure63%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)59%
- Arthritis46%
- Anxiety31%
- Depression24%
Practice locations
Addresses where Ermelinda Bonaccio is enrolled with Medicare (CMS data updated October 2, 2026).
- 1540 Maple RdWilliamsville, NY 14221 (716) 845‑2300
- 199 Park Club Ln, Suite 100Williamsville, NY 14221 (716) 332‑6834
- Elm and Carlton StBuffalo, NY 14263 (716) 845‑2300
Group practices
Medicare enrollment lists Ermelinda Bonaccio as a member of these groups (CMS data updated October 2, 2026).
- Roswell Park Cancer Institute488 clinicians in the group
- Rpci Oncology, PC65 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Williamsville
Clinicians with the same Medicare primary specialty in Williamsville, NY — not a recommendation.
Other clinicians in Roswell Park Cancer Institute
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 1991 (35 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649275231 |
| Corrections | Report 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians