Quick answers
- Does Mercedes Sundy accept Medicare assignment?
- Yes. Medicare's clinician data says Mercedes Sundy 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 Mercedes Sundy see?
- In 2024, CMS data shows 107 Original Medicare patients and 132 services for Mercedes Sundy. This counts Original Medicare only and measures volume, not quality.
- What is Mercedes Sundy's NPI number?
- 1891062733. 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 Mercedes Sundy, 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 | 107 |
|---|---|
| Services billed to Medicare | 132 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)114 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%
- Heart failure75%
- Ischemic heart disease68%
- Atrial fibrillation68%
- Chronic kidney disease58%
Hospitals where Mercedes Sundy works
Medicare's Facility Affiliation Data lists Mercedes Sundy 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.
- Meadville Medical CenterMeadville, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390113
- Saint Vincent HospitalErie, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390009
- Westfield Memorial Hospital, IncWestfield, NY · Rural Emergency Hospital · Emergency services: listed by Medicare · CCN 330801
Practice locations
Addresses where Mercedes Sundy is enrolled with Medicare (CMS data updated October 2, 2026).
- 2315 Myrtle St, Suite 190Erie, PA 16502 (814) 453‑7767
Group practices
Medicare enrollment lists Mercedes Sundy as a member of this group (CMS data updated October 2, 2026).
- Saint Vincent Consultants in Cardiovascular Diseases26 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Erie
Clinicians with the same Medicare primary specialty in Erie, PA — not a recommendation.
Other clinicians in Saint Vincent Consultants in Cardiovascular Diseases
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891062733 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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