Stanford University
Showing 1-10 of 265 Results
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David M. Gaba, M.D.
Professor of Anesthesiology, Perioperative and Pain Medicine (MSD), Emeritus
Current Research and Scholarly Interests1) Human Performance in Health Care, 2) Patient Safety in health care, 3) Simulation training in health care, 4) Organizational issues in safety in health care.
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Julieta Gabiola
Clinical Professor, Medicine - Primary Care and Population Health
Current Research and Scholarly InterestsIn the Philippines where hypertension and prehypertension are prevalent and medication not affordable, we are looking into prevention of hypertension through education and lifestyle modification as a practical alternatives.
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Xavier Gaeta MD PhD
Instructor, Pediatrics - Nephrology
BioDr. Xavier Gaeta is an Instructor in the division of Pediatric Nephrology and a postdoctoral fellow in the lab of Dr. Calvin J. Kuo. His research interests include using three-dimensional human kidney organoids and genetic engineering techniques to model human kidney disease, kidney development, and cancer in vitro.
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John V. Gahagan, MD, FACS, FASCRS
Clinical Associate Professor, Surgery - General Surgery
BioJohn V. Gahagan MD is a Clinical Associate Professor in Colon & Rectal Surgery. He leads the Colon & Rectal Surgery residency program as Program Director and serves as Chief of Surgery and the Medical Director of Supply Chain at the Stanford Tri-Valley Hospital. He joined Stanford in 2019 to build the Stanford Colon & Rectal Surgery practice in the East Bay at Stanford Tri-Valley in Pleasanton and at Stanford Health Care – Emeryville. He has 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.
Dr. Gahagan is passionate about surgical education. He serves as an Associate Program Director of the Stanford General Surgery Residency Training Program. In that role, he oversees resident evaluation and feedback. He led the revamp of the program’s evaluation process and Clinical Competency Committee – work that has been presented at the Association of Program Directors in Surgery (APDS) and the Accreditation Council for Graduate Medical Education (ACGME). In 2021, he established the Stanford General Surgery Endoscopy rotation, giving general surgery residents an opportunity to gain endoscopy experience by collaborating with faculty gastroenterologists and fulfilling their graduation requirements. In 2026, he established the Colon & Rectal Surgery residency program at Stanford and serves as the Program Director. At the time of accreditation, this program was the only ACGME accredited Colon & Rectal Surgery residency program in Northern California. In addition, he is the General Surgery Rotation Director for the Stanford Tri-Valley Family Medicine Residency. On a national level, he is an associate question writer for the American Board of Colon & Rectal Surgery and serves on the USMLE Step 3 Test Development committee and the USMLE Management Committee.
He also serves in various administrative roles, including as Chief of Surgery at the Stanford Tri-Valley Hospital. In 2025, he was appointment Medical Director of Supply Chain for the Stanford Tri-Valley Hospital. He is a member of the Stanford Medicine Partners Quality and Credentialing Committee, the Stanford Tri-Valley Operating Room Committee and the Stanford Tri-Valley Medical Executive Committee. -
Megan Galán
Clinical Assistant Professor, Medicine
BioMegan Galán, M.D., M.S., is a Clinical Assistant Professor in the Division of Hospital Medicine at Stanford. She studied History of Science and Medicine at Yale, earned her M.S. through the UC Berkeley–UCSF Joint Medical Program, and received her M.D. from UCSF before completing her internal medicine residency at Stanford. Her work focuses on equitable, compassionate care for hospitalized patients, particularly those experiencing homelessness, substance use disorders, and justice involvement. She is committed to advancing health equity through advocacy, teaching, and quality improvement, fostering collaboration and patient-centered care.
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Susan Galel
Associate Professor of Pathology at the Stanford University Medical Center, Emerita
Current Research and Scholarly InterestsTransfusion-transmitted infections and donor screening for infectious diseases. National policies for blood banks. Enhancement of transfusion safety and effectiveness, with a focus on quality assurance in blood banking and transfusion therapy; transfusion medicine education; pediatric and adult transfusion therapy.
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Kristin Galetta, MD
Clinical Assistant Professor, Adult Neurology
BioDr. Galetta is a board-certified neurologist within the Neurohospitalist and Neuroimmunology divisions. She completed a multiple sclerosis (MS) fellowship at Brigham and Women’s Hospital.
She has extensive experience diagnosing and treating patients with autoimmune neurologic conditions including multiple sclerosis, optic neuritis, autoimmune encephalitis and transverse myelitis. Her research interests are focused on understanding best treatment strategies for patients with multiple sclerosis and more rare autoimmune neurologic conditions. She also has an interest in medical education improvement.
She has published in numerous peer-reviewed journals, including the Journal of Neurological Sciences and Multiple Sclerosis and Related Disorders. She is a peer reviewer for multiple prestigious journals, including Neurology and Frontiers in Neurology.
