JohnGahaganMDFACS FASCRS

Clinical Assistant Professor

Dr. Gahagan is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
Connect with colleagues in the same hospital or clinic.
Read the latest clinical news, personalized to your specialty.

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.

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

PubMed

1 citations
Stoma 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
11 citations
Using AI and computer vision to analyze technical proficiency in robotic surgery.
Janice H Yang, Emmett D Goodman, Aaron J Dawes, John V Gahagan, Micaela M Esquivel
Surgical Endoscopy. 2023-04-01