Quick answers
- Does Mary T. Bonaccorsi accept Medicare assignment?
- Yes. Medicare's clinician data says Mary T. Bonaccorsi 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 Mary T. Bonaccorsi see?
- In 2024, CMS data shows 19 Original Medicare patients and 68 services for Mary T. Bonaccorsi. This counts Original Medicare only and measures volume, not quality.
- What is Mary T. Bonaccorsi's NPI number?
- 1811927205. 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 Mary T. Bonaccorsi, 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 | 19 |
|---|---|
| Services billed to Medicare | 68 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 57 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)59 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).
- Anxiety63%
- High cholesterol58%
Practice locations
Addresses where Mary T. Bonaccorsi is enrolled with Medicare (CMS data updated October 2, 2026).
- N2846 State Rd, Suite 67Williams Bay, WI 53191 (262) 245‑5608
- N2950 State Rd, Suite 67Lake Geneva, WI 53147
Group practices
Medicare enrollment lists Mary T. Bonaccorsi as a member of this group (CMS data updated October 2, 2026).
- Mercy Health System Corporation753 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Other clinicians in Mercy Health System Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| School | Rush Medical College Of Rush University |
| Graduation year | 2001 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1811927205 |
| 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