Quick answers
- Which hospitals does Tomasz J. Niewiarowski work at?
- Medicare's official clinician data lists Tomasz J. Niewiarowski at 5 hospitals: Geisinger Wyoming Valley Medical Center, Lehigh Valley Hospital, Mount Nittany Medical Center, St Luke's Hospital - Easton Campus and St Lukes Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Tomasz J. Niewiarowski see patients?
- Medicare's clinician data lists 3 practice locations, including Bethlehem, PA, State College, PA and Wilkes Barre, PA. Call before your visit to confirm the address.
- What is Tomasz J. Niewiarowski's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Tomasz J. Niewiarowski accept Medicare assignment?
- Yes. Medicare's clinician data says Tomasz J. Niewiarowski 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.
- Does Tomasz J. Niewiarowski offer telehealth?
- Medicare's clinician data says Tomasz J. Niewiarowski offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Tomasz J. Niewiarowski?
- (610) 866-0113, as listed in official Medicare / NPI Registry data.
- What is Tomasz J. Niewiarowski's NPI number?
- 1073624441. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Tomasz J. Niewiarowski works
Medicare's Facility Affiliation Data lists Tomasz J. Niewiarowski at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Geisinger Wyoming Valley Medical CenterWilkes-Barre, PA · Acute Care Hospital · CCN 390270
- Lehigh Valley HospitalAllentown, PA · Acute Care Hospital · CCN 390133
- Mount Nittany Medical CenterState College, PA · Acute Care Hospital · CCN 390268
- St Luke's Hospital - Easton CampusEaston, PA · Acute Care Hospital · CCN 390162
- St Lukes HospitalBethlehem, PA · Acute Care Hospital · CCN 390049
Practice locations
Addresses where Tomasz J. Niewiarowski is enrolled with Medicare (CMS data updated 2026-10-02).
- 306 S New St, Suite 201Bethlehem, PA 18015 (610) 866‑0113
- 3901 S Atherton St, Suite 130State College, PA 16801 (814) 231‑6824
- 675 Baltimore DrWilkes Barre, PA 18702 (570) 826‑7300
Group practices
Medicare enrollment lists Tomasz J. Niewiarowski as a member of these groups (CMS data updated 2026-10-02).
- Geisinger Clinic3,467 clinicians in the group
- Mount Nittany Medical Center Health Services Inc367 clinicians in the group
- Vita Medical Associates, PC4 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Pennsylvania
Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1073624441 |
| 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