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5725 W Las Positas Blvdsuite 101Pleasanton, CA 94588
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Summary
- Dr. John Gahagan is a colon and rectal surgeon located in Pleasanton, CA. He completed his surgical residency at the University of California, Irvine, and a fellowship in colon and rectal surgery at New York Presbyterian Hospital. He has been a Clinical Assistant Professor at Stanford Health Care since 2019. Dr. Gahagan is experienced in managing hemorrhoids and colorectal cancer. He has authored several publications, including on topics such as stoma complications, the use of AI in robotic surgery, and the role of minimally invasive proctectomy. His work has been widely cited by other researchers.
Education & Training
New York Presbyterian Hospital (Cornell Campus)Fellowship, Colon and Rectal Surgery, 2018 - 2019
University of California (Irvine)Residency, Surgery, 2012 - 2018
Wake Forest School of Medicine of Wake Forest Baptist Medical CenterClass of 2012
Certifications & Licensure
CA State Medical License 2013 - 2025
NY State Medical License 2018 - 2020
American Board of Colon and Rectal Surgery Colon & Rectal Surgery
American Board of Surgery Surgery
Publications & Presentations
PubMed
- Phase II trial of organ preservation program using short-course radiation and FOLFOXIRI for rectal cancer (SHORT-FOX): Two-Year primary outcome analysis.Daniella Klebaner, Eleanor Brown, George A Fisher, Andrew Shelton, Tyler P Johnson
Radiotherapy and Oncology. 2025-04-08 - 1 citationsStoma Complications.Aaron J Dawes, John V Gahagan
Clinics in Colon and Rectal Surgery. 2024-11-01 - Resident-Applicant Buddy Program Increases Applicant Interest and Program Transparency.Jennifer Shearer, Rejoice F Ngongoni, Kirbi Yelorda, Chloe Nobuhara, Dana T Lin
Journal of Surgical Education. 2024-11-01
Professional Memberships
- Fellow
- Fellow
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