Quick answers
- Which hospitals does Oscar C. Marroquin work at?
- Medicare's official clinician data lists Oscar C. Marroquin at 1 hospital: UPMC Presbyterian Shadyside. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Oscar C. Marroquin see patients?
- Medicare's clinician data lists 3 practice locations, including Pittsburgh, PA. Call before your visit to confirm the address.
- What is Oscar C. Marroquin's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does Oscar C. Marroquin accept Medicare assignment?
- Yes. Medicare's clinician data says Oscar C. Marroquin 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 Oscar C. Marroquin?
- (412) 383-1370, as listed in official Medicare / NPI Registry data.
- What is Oscar C. Marroquin's NPI number?
- 1720052715. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Oscar C. Marroquin works
Medicare's Facility Affiliation Data lists Oscar C. Marroquin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UPMC Presbyterian ShadysidePittsburgh, PA · Acute Care Hospital · CCN 390164
Practice locations
Addresses where Oscar C. Marroquin is enrolled with Medicare (CMS data updated 2026-10-02).
- 1350 Locust StPittsburgh, PA 15219
- 200 Lothrop StPittsburgh, PA 15213 (412) 383‑1370
- 200 Lothrop St, Muh 4 EastPittsburgh, PA 15213 (412) 383‑1370
Group practices
Medicare enrollment lists Oscar C. Marroquin as a member of this group (CMS data updated 2026-10-02).
- University of Pittsburgh Physicians4,236 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Pennsylvania →
Other cardiologists in Pittsburgh
Clinicians with the same Medicare primary specialty in Pittsburgh, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720052715 |
| 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