Quick answers
- Which hospitals does Therese Gagnon work at?
- Medicare's official clinician data lists Therese Gagnon at 3 hospitals: UPMC Horizon, UPMC Jameson and UPMC Presbyterian Shadyside. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Therese Gagnon see patients?
- Medicare's clinician data lists 5 practice locations, including New Castle, PA, Pittsburg, PA and Pittsburgh, PA. Call before your visit to confirm the address.
- What is Therese Gagnon's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Therese Gagnon accept Medicare assignment?
- Yes. Medicare's clinician data says Therese Gagnon 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 Therese Gagnon?
- (724) 656-4660, as listed in official Medicare / NPI Registry data.
- What is Therese Gagnon's NPI number?
- 1427624261. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Therese Gagnon works
Medicare's Facility Affiliation Data lists Therese Gagnon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UPMC HorizonGreenville, PA · Acute Care Hospital · CCN 390178
- UPMC JamesonNew Castle, PA · Acute Care Hospital · CCN 390016
- UPMC Presbyterian ShadysidePittsburgh, PA · Acute Care Hospital · CCN 390164
Practice locations
Addresses where Therese Gagnon is enrolled with Medicare (CMS data updated 2026-10-02).
- 1211 Wilmington AveNew Castle, PA 16105
- 1211 Wlmngtn Ave Grnd Flr, Div of Pulm Allergy and Crit Care MedNew Castle, PA 16105 (724) 656‑4660
- 2 Hot Meal StPittsburg, PA 15203
- 200 Lothrop StPittsburgh, PA 15213 (412) 383‑1370
- 200 Lothrop St, Muh 4 EastPittsburgh, PA 15213 (412) 383‑1370
Group practices
Medicare enrollment lists Therese Gagnon as a member of this group (CMS data updated 2026-10-02).
- University of Pittsburgh Physicians4,236 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in New Castle
Clinicians with the same Medicare primary specialty in New Castle, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427624261 |
| 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