Quick answers
- Which hospitals does Mark W. Knestrick work at?
- Medicare's official clinician data lists Mark W. Knestrick at 5 hospitals: Magee Womens Hospital of UPMC Health System, The Washington Hospital, Trinity Medical Center East &Trinity Medical Center West, UPMC Greene and UPMC Presbyterian Shadyside. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark W. Knestrick see patients?
- Medicare's clinician data lists 2 practice locations, including Steubenville, OH and Washington, PA. Call before your visit to confirm the address.
- What is Mark W. Knestrick's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Hematology.
- Does Mark W. Knestrick accept Medicare assignment?
- Yes. Medicare's clinician data says Mark W. Knestrick 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 Mark W. Knestrick?
- (740) 266-3900, as listed in official Medicare / NPI Registry data.
- What is Mark W. Knestrick's NPI number?
- 1447576673. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark W. Knestrick works
Medicare's Facility Affiliation Data lists Mark W. Knestrick at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Magee Womens Hospital of UPMC Health SystemPittsburgh, PA · Acute Care Hospital · CCN 390114
- The Washington HospitalWashington, PA · Acute Care Hospital · CCN 390042
- Trinity Medical Center East &Trinity Medical Center WestSteubenville, OH · Acute Care Hospital · CCN 360211
- UPMC GreeneWaynesburg, PA · Acute Care Hospital · CCN 390150
- UPMC Presbyterian ShadysidePittsburgh, PA · Acute Care Hospital · CCN 390164
Practice locations
Addresses where Mark W. Knestrick is enrolled with Medicare (CMS data updated 2026-10-02).
- 3204 Johnson RdSteubenville, OH 43952 (740) 266‑3900
- 470 Johnson Rd, Suite 10Washington, PA 15301 (724) 223‑3816
Group practices
Medicare enrollment lists Mark W. Knestrick as a member of this group (CMS data updated 2026-10-02).
- Oncology Hematology Association Inc202 clinicians in the group
Specialties
- Medical Oncologyprimary
- Hematologyalso
Other oncologists in Steubenville
Clinicians with the same Medicare primary specialty in Steubenville, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | West Virginia University School Of Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1447576673 |
| 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