Clinicians affiliated with Warren General Hospital

Acute Care Hospitals · Voluntary non-profit - Private · 2 Crescent Park West, Warren, PA 16365 · Warren, PA · CCN 390146

Affiliation snapshotNovember 2, 2026CMS Doctors and Clinicians Facility Affiliation file, current snapshot (no end-of-2024 archive), applied to 2024
Activity year2024Medicare Part B claims, Original Medicare fee-for-service

136 clinicians affiliated with Warren General Hospital are in the 2024 Medicare Part B data (151 listed in the affiliation file).

Each clinician's exact figures are in their Physician Report, from their page. View sample report · Already purchased? Open your report (earlier Local report and passes)

Affiliated clinicians by specialty, 2024

All specialties · Nurse Practitioner (28) · Physician Assistant (22) · Cardiology (10) · Family Practice (9) · Internal Medicine (9) · Anesthesiology (5) · Certified Registered Nurse Anesthetist (CRNA) (5) · Emergency Medicine (4) · General Surgery (4) · Urology (4) · Gastroenterology (3) · Hospitalist (3) · Nephrology (3) · Diagnostic Radiology (2) · Hematology-Oncology (2) · Obstetrics & Gynecology (2) · Orthopedic Surgery (2) · Podiatry (2) · Pulmonary Disease (2) · Cardiac Surgery (1) · Certified Nurse Midwife (1) · Clinical Cardiac Electrophysiology (1) · Hematology (1) · Interventional Cardiology (1) · Medical Oncology (1) · Neurology (1) · Ophthalmology (1) · Otolaryngology (1) · Pain Management (1) · Pathology (1) · Plastic and Reconstructive Surgery (1) · Psychiatry (1) · Radiation Oncology (1) · Rheumatology (1)

Clinicians affiliated with Warren General Hospital, 2024

Alphabetical by last name; 101–136 of 136.

NameSpecialtyCity
Michael Punk, CRNACertified Registered Nurse Anesthetist (CRNA)Beaver, PA
Avais Raja, MDInternal MedicineErie, PA
Kristin R Rand, PA-CPhysician AssistantErie, PA
Tammy L Ristau, CRNPNurse PractitionerSheffield, PA
Saleha Rizwan, M.D.Hematology-OncologyErie, PA
Antonio R Roman, MDCardiologyJamestown, NY
Vikas Sacher, MBBSInternal MedicineWarren, PA
Francesco Santoni-Rugiu, MDCardiologyChambersburg, PA
Emily M Scavella, PA-CPhysician AssistantErie, PA
Jennifer SchaafNurse PractitionerErie, PA
Valeriy Sedov, M.D.Medical OncologyWarren, PA
Paul Shaderowfsky, MDDiagnostic RadiologyClarks Summit, PA
Eleanor M Sharp Dorrion, FNP-CNurse PractitionerClarion, PA
Melissa D Shene, CRNPNurse PractitionerWarren, PA
Saniya Siddique, M.D.CardiologyErie, PA
Kathy Simanowski, CRNACertified Registered Nurse Anesthetist (CRNA)Warren, PA
Kristi R Simpson, PA-CPhysician AssistantWarren, PA
William R Sonnenberg, MDFamily PracticeTitusville, PA
Timothy S Stanton, MDInternal MedicineWarren, PA
Nick Stefanovski, MDOrthopedic SurgeryErie, PA
John H Susz, DPMPodiatryRussell, PA
John J Sutton, MDFamily PracticeWarren, PA
Mark E Thompson, MDAnesthesiologyOlean, NY
Mason Tootell, M.D.Family PracticeWarren, PA
Chiedozie UwanduPain ManagementWilmington, DE
Jared C Varner, PA-CPhysician AssistantWarren, PA
Eric D Vinson, DOEmergency MedicineKane, PA
Timothy W Vollmer, D.O.AnesthesiologySaint Marys, PA
Khanh Thi Nha Vu, M.D.Radiation OncologyJamestown, NY
Ryan White, MDUrologyJamestown, NY
William H Wismer, DOGastroenterologyErie, PA
Tomasz B Woloszyn, MDInternal MedicineOlean, NY
Pararajasingham Yogeswaran, MDCardiologyErie, PA
Thomas Young, M.D.HematologyMeadville, PA
Yoko Young Sang, MDGeneral SurgeryWarren, PA
Nathan Zigler, PA-CPhysician AssistantWarren, PA

Affiliation comes from the CMS Doctors and Clinicians Facility Affiliation file, hospital rows only; name, address and type from the CMS Hospital General Information file. CMS does not publish an end-of-year archive of the affiliation file, so the current snapshot is applied to the latest data year. A clinician listed with several hospitals or groups appears on each of their pages. How hospital pages are built