Quick answers
- Which hospitals does Marisa C. Weiss work at?
- Medicare's official clinician data lists Marisa C. Weiss at 4 hospitals: Bryn Mawr Hospital, Main Line Hospital Lankenau, Paoli Hospital and Riddle Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marisa C. Weiss see patients?
- Medicare's clinician data lists 3 practice locations, including Wynewood, PA, Paoli, PA and Newton Square, PA. Call before your visit to confirm the address.
- What is Marisa C. Weiss's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Marisa C. Weiss accept Medicare assignment?
- Yes. Medicare's clinician data says Marisa C. Weiss 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 Marisa C. Weiss?
- (484) 476-2433, as listed in official Medicare / NPI Registry data.
- What is Marisa C. Weiss's NPI number?
- 1457351660. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marisa C. Weiss works
Medicare's Facility Affiliation Data lists Marisa C. Weiss at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bryn Mawr HospitalBryn Mawr, PA · Acute Care Hospital · CCN 390139
- Main Line Hospital LankenauWynnewood, PA · Acute Care Hospital · CCN 390195
- Paoli HospitalPaoli, PA · Acute Care Hospital · CCN 390153
- Riddle Memorial HospitalMedia, PA · Acute Care Hospital · CCN 390222
Practice locations
Addresses where Marisa C. Weiss is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 E Lancaster AveWynewood, PA 19096 (484) 476‑2433
- 255 W Lancaster AvePaoli, PA 19301 (484) 565‑1140
- 3855 W Chester PikeNewton Square, PA 19073 (610) 886‑6100
Group practices
Medicare enrollment lists Marisa C. Weiss as a member of this group (CMS data updated 2026-10-02).
- Main Line Radiation Oncology PC5 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Wynewood
Clinicians with the same Medicare primary specialty in Wynewood, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Perelman School Of Med At The University Of Pennsylvania |
| Graduation year | 1984 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457351660 |
| 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