Medical School
Rush Medical College of Rush University Medical Center - 2019
Residency
Emory University
Fellowship
Thomas Jefferson University Hospital
Marc Hersh, MD
Assistant Professor of Medicine
Contact Information
Assistant Professor of Medicine
Education
Publications
- S3095 Subtypes of Intestinal Overgrowth in Clinical Practice: A Single Center Study
- Functional lumen imaging probe topography identifies patients with normal acid exposure and esophageal hypervigilance amongst proton-pump inhibitor non-responders
- The Upper Esophageal Sphincter Distensibility Index Measured Using Functional Lumen Imaging Probe Identifies Defective Barrier Function of the Upper Esophageal Sphincter
- 5-HT2C receptor blockade reverses SSRI-associated basal ganglia dysfunction and potentiates therapeutic efficacy
- Hippocampal 5-HT Input Regulates Memory Formation and Schaffer Collateral Excitation
Certifications
Internal Medicine
Gastroenterology
Awards
2025 – Most Creative Research Award, 2nd Annual Jefferson GI Research Symposium
2024 – Presidential Poster Award, American College of Gastroenterology
2023 – Presidential Poster Award, American College of Gastroenterology
2022 – Alpha Omega Alpha (AOA) Honor Medical Society
2021 – Outstanding Poster Presenter, ACG Annual Meeting
2020 – Outstanding Poster Presenter, ACG Annual Meeting
2020 – Winner, Most Interesting Case, Emory University Midtown Hospital
2018 – Student Educator Award, 10th Annual Ambulatory Preceptor Workshop
2016 – Dean’s Summer Research Fellowship Grant, Rush Medical College
Research & Clinical Interest
My research and clinical interests center on the pursuit of sustainable and environmentally responsible endoscopic practice. Gastrointestinal endoscopy is among the most procedure-intensive specialties in medicine, and its cumulative environmental burden — encompassing single-use device waste, energy consumption, supply chain emissions, and greenhouse gas generation — represents a growing challenge for the healthcare sector. I am committed to advancing the principles of green endoscopy, including the reduction of unnecessary procedures through evidence-based referral criteria, optimization of waste segregation and recycling protocols within the endoscopy suite, and the evaluation of reusable versus single-use device carbon equivalency. My research aims to translate emerging multi-society sustainability frameworks into actionable, unit-level quality improvement initiatives at Thomas Jefferson University Hospital, with the broader goal of contributing to a net-zero emissions trajectory for gastrointestinal endoscopy.