Quick answers
- Does Rebecca K. Marcus accept Medicare assignment?
- Yes. Medicare's clinician data says Rebecca K. Marcus 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 Rebecca K. Marcus see?
- In 2024, CMS data shows 143 Original Medicare patients and 386 services for Rebecca K. Marcus. This counts Original Medicare only and measures volume, not quality.
- What is Rebecca K. Marcus's NPI number?
- 1841556594. 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 Rebecca K. Marcus, 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 | 143 |
|---|---|
| Services billed to Medicare | 386 |
| Different services or procedures | 65 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)92 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)50 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)46 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)18 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)17 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%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)38%
- Diabetes35%
- Ischemic heart disease34%
Hospitals where Rebecca K. Marcus works
Medicare's Facility Affiliation Data lists Rebecca K. Marcus 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.
- Saint Vincent HospitalErie, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390009
- West Penn HospitalPittsburgh, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390090
- Westfield Memorial Hospital, IncWestfield, NY · Rural Emergency Hospital · Emergency services: listed by Medicare · CCN 330801
Practice locations
Addresses where Rebecca K. Marcus is enrolled with Medicare (CMS data updated October 2, 2026).
- 2315 Myrtle St, Suite 290Erie, PA 16502 (814) 879‑6636
- 2508 Myrtle St, Suite 100Erie, PA 16502 (814) 452‑7134
Group practices
Medicare enrollment lists Rebecca K. Marcus as a member of these groups (CMS data updated October 2, 2026).
- Allegheny Clinic2,389 clinicians in the group
- St Vincent Medical Education and Research Institute Inc298 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Erie
Clinicians with the same Medicare primary specialty in Erie, PA — not a recommendation.
Other clinicians in Allegheny Clinic
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841556594 |
| 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