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John V. Gahagan, MD, FACS

Clinical Assistant Professor, Surgery - General Surgery

BioJohn Gahagan, MD is a Clinical Assistant Professor of Surgery in the Section of Colorectal Surgery. He has extensive training in advanced minimally invasive surgical techniques including robotic and laparoscopic surgery. He has authored several textbook chapters and original articles in peer-reviewed journals. His clinical practice is focused on the surgical treatment of colon and rectal cancers, inflammatory bowel disease (ulcerative colitis and Crohn’s disease), and benign colon and anorectal diseases (diverticulitis, hemorrhoids, fistulas, fissures). He believes in patient-centered care and multi-disciplinary approach to the treatment of diseases of the colon, rectum and anus. He joined Stanford in 2019 and is excited to build a Stanford colorectal surgery practice in the East Bay at Stanford – ValleyCare in Pleasanton and at Stanford Health Care – Emeryville.

Amy Gallo

Clinical Associate Professor, Surgery - Abdominal Transplantation

Contact Info
- MC 5731
- Stanford, California 94305-5731
Mail Code: 5731
agallo@stanford.edu

Hua Gao

Postdoctoral Research Fellow, Vascular Surgery

Manuel Garcia-Toca MD, MS

Clinical Professor, Surgery - Vascular Surgery
Affiliate, Surgery - Vascular Surgery

Current Research and Scholarly InterestsOpen and endovascular management of vascular trauma, aortic dissection, complex thoracic and abdominal aortic aneurysm disease, critical limb ischemia, extracranial cerebrovascular disease and dialysis access.

Dyani Gaudilliere

Clinical Associate Professor, Surgery - Plastic & Reconstructive Surgery

BioDr. Dyani Gaudilliere specializes in Dental Surgery and Oral Oncology in a hospital setting. As a hospital dentist she performs surgical treatment of infection and trauma to the teeth and supporting alveolar bone. She also performs medically necessary dental clearance and extractions in the context of larger medical conditions, such as cardiac disease, joint replacement, or organ transplantation. As an oral oncologist, she specializes in surgical dental treatment prior to, during, and following radiation therapy and chemotherapy.