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AC

Alvin Chang

Chief Resident, PGY-5

Credentials: · · ·

History

Surgery
Geisinger Health System
PGY-52022–Present
2021–Present
Resident
Geisinger Health System
Present
Doctor of Medicine
2017–2021

Research

Biliopancreatic diversion with duodenal switch results in superior weight loss and diabetes remission in patients with baseline body mass index ≥50
Surgery for Obesity and Related Diseases · 2025 · First of 6 authors · 6 citations
Sex influences how attendings evaluate surgical residents in the operating room
The American Journal of Surgery · 2024 · First of 6 authors · Corresponding · 3 citations
Long-term incidence of bariatric related procedures following laparoscopic gastric bypass: 15 to 20 years single institution experience
Surgical Endoscopy · 2025 · 2 citations

David Parker
4 papers
VO
Vladan Obradovic
4 papers
Anthony Petrick
3 papers
Alexandra Falvo
2 papers
John Nguyen-Lee
2 papers
Mark Mahan
2 papers
RH
Ryan Horsley
2 papers
AR
Arash Rahimi
1 paper · 1 as a fellow
BM
Benefsha Mohammad
1 paper
CK
Catherine Kwon
1 paper
Donovan Harris
1 paper · 1 as a resident
Justin Dhyani
1 paper · 1 as a fellow