Quick answers
- Which hospitals does Margaret M. Fitzsimons work at?
- Medicare's official clinician data lists Margaret M. Fitzsimons at 5 hospitals: Milton S Hershey Medical Center, Penn State Health Hampden Medical Center, Penn State Health Holy Spirit Medical Center, UPMC Pinnacle Hospitals and WellSpan York Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Margaret M. Fitzsimons see patients?
- Medicare's clinician data lists 1 practice location in Hershey, PA. Call before your visit to confirm the address.
- What is Margaret M. Fitzsimons's specialty?
- Medicare lists Nephrology as the primary specialty.
- Does Margaret M. Fitzsimons accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret M. Fitzsimons accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Margaret M. Fitzsimons?
- (717) 531-8131, as listed in official Medicare / NPI Registry data.
- What is Margaret M. Fitzsimons's NPI number?
- 1720036445. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Margaret M. Fitzsimons works
Medicare's Facility Affiliation Data lists Margaret M. Fitzsimons at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Milton S Hershey Medical CenterHershey, PA · Acute Care Hospital · CCN 390256
- Penn State Health Hampden Medical CenterEnola, PA · Acute Care Hospital · CCN 390336
- Penn State Health Holy Spirit Medical CenterCamp Hill, PA · Acute Care Hospital · CCN 390004
- UPMC Pinnacle HospitalsHarrisburg, PA · Acute Care Hospital · CCN 390067
- WellSpan York HospitalYork, PA · Acute Care Hospital · CCN 390046
Practice locations
Addresses where Margaret M. Fitzsimons is enrolled with Medicare (CMS data updated 2026-10-02).
- 500 Universidy DrHershey, PA 17033 (717) 531‑8131
Group practices
Medicare enrollment lists Margaret M. Fitzsimons as a member of this group (CMS data updated 2026-10-02).
- The Milton S Hershey Medical Center Physicians Group1,623 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Hershey
Clinicians with the same Medicare primary specialty in Hershey, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720036445 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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