Quick answers
- Which hospitals does Maribeth O. Mastascusa work at?
- Medicare's official clinician data lists Maribeth O. Mastascusa at 1 hospital: St Clair Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Maribeth O. Mastascusa see patients?
- Medicare's clinician data lists 2 practice locations, including Bethel Park, PA and Pittsburgh, PA. Call before your visit to confirm the address.
- What is Maribeth O. Mastascusa's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Maribeth O. Mastascusa accept Medicare assignment?
- Yes. Medicare's clinician data says Maribeth O. Mastascusa 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 Maribeth O. Mastascusa?
- (412) 854-3121, as listed in official Medicare / NPI Registry data.
- What is Maribeth O. Mastascusa's NPI number?
- 1407060973. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Maribeth O. Mastascusa works
Medicare's Facility Affiliation Data lists Maribeth O. Mastascusa at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Clair HospitalPittsburgh, PA · Acute Care Hospital · CCN 390228
Practice locations
Addresses where Maribeth O. Mastascusa is enrolled with Medicare (CMS data updated 2026-10-02).
- 1300 Oxford DrBethel Park, PA 15102 (412) 854‑3121
- 300 Halket StPittsburgh, PA 15213
Group practices
Medicare enrollment lists Maribeth O. Mastascusa as a member of this group (CMS data updated 2026-10-02).
- University of Pittsburgh Physicians4,236 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Bethel Park
Clinicians with the same Medicare primary specialty in Bethel Park, PA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 1996 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407060973 |
| 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