4.3
17 Ratings with 4 written Reviews

Gregory J. Tiesi, M.D., FACS, FSSO, a surgical oncologist who specializes in HPB and Endocrine Surgery, joins Hackensack Meridian Jersey Shore University Medical Center as Medical Director of Hepatobiliary Surgery. Prior to joining the Jersey Shore oncology team, Dr. Tiesi practiced at the ChristianaCare Health System/Helen F. Graham Cancer Center in Newark, Delaware, a tertiary referral center for the entire state.
In addition to providing expert cancer care for patients, he was the head of the Surgical Oncology Research Fellowship at the Helen F. Graham Cancer Center, authored several research publications, two book chapters and has had multiple presentations at national and regional medical conferences. He serves on the Alliance for Clinical Trials in Oncology, Pancreatic Cancer working group and sits on the Scientific Advisory Committee of a biotech company that specializes in treating cancer via gene editing. He holds a fellowship from the American College of Surgeons in …addition to the Society of Surgical Oncology. He was a Clinical Instructor at the Sidney Kimmel Medical College, part of the Thomas Jefferson University, and Clinical Assistant Professor at the Philadelphia College of Osteopathic Medicine.
He has earned many accolades throughout his career such as the Golden Apple Award, the Arnold P. Gold Foundation Award for Humanism (twice), the Alfred S. Ketchum, MD Award and he was inducted into the Alpha Omega Alpha Honor Medical Society, Beta Chapter. He received the Christiana Care Rising Star Award and was selected by his peers (throughout the state) and Delaware Today Magazine as a Top Doctor in Surgical Oncology for the last three years in a row.
![]() | ![]() | ![]() | ![]() |
| Dr. Gregory J Tiesi, MD | Dr. Mark A. Hallman | Dr. Arielle Weiss | Dr. Dylan Sherry |
| Oncology | Oncology | Oncology | Oncology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | Accepts New Patients |
| 17 Years of Experience | 9 Years of Experience | 11 Years of Experience | |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English | ||
| Neptune , NJ | Philadelphia , PA | Philadelphia , PA | Philadelphia , PA |
| Med School: Medical University Of South Carolina College Of Medicine | Med School: Tufts University School Of Medicine | Med School: Case Western Reserve University School Of Medicine | |
Current Profile | View Profile | View Profile | View Profile |
Surgical Oncology, 2017










Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.
Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.
Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.