Surgery
Showing 61-80 of 208 Results
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John V. Gahagan, MD, FACS, FASCRS
Clinical Associate Professor, Surgery - General Surgery
BioJohn Gahagan, MD is a Clinical Associate Professor of Surgery in the Section of Colorectal Surgery, and serves as Chief of Surgery at the Stanford Tri-Valley Hospital. He joined Stanford in 2019 to build the Stanford colorectal 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.
Outside of his clinical practice, he is involved in surgical education and serves as an Associate Program Director of the Stanford General Surgery Residency Training Program as well as the Site Director for the Stanford Tri-Valley surgery rotation. He serves in various administrative roles, including as a member of the Stanford Tri-Valley Medical Staff Quality Committee and the Stanford Medicine Partners Quality and Credentialing Committee. -
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.
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Laura Graham
Other Teaching Staff-Hourly, Surgery
BioI am an epidemiologist and health services researcher with nearly 20 years of experience in surgical outcomes research. My work focuses on improving healthcare delivery and outcomes for Veterans and other vulnerable populations, particularly those who are older or medically complex. Using large administrative datasets from the Veterans Health Administration (VA), I study surgical processes and outcomes to inform system-level improvements.
With postdoctoral training in health economics and implementation science, I bring expertise in causal inference methodology and artificial intelligence, particularly the use of natural language processing (NLP). I apply these methods to extract insights from unstructured clinical data and to strengthen causal analyses in complex healthcare datasets. These approaches allow me to address research questions that were previously difficult to study with standard empirical approaches.
As a collaborative leader, I have mentored junior investigators and worked across academic and industry sectors to advance health services research. My goal is to translate evidence into practice, ultimately improving the quality of surgical care for Veterans. -
Teodor Grantcharov, MD, PhD, FACS, FRCS (Glasg)
Professor of Surgery (General Surgery)
On Leave from 03/09/2026 To 06/30/2026BioDr. Teodor Grantcharov completed his surgical training at the University of Copenhagen, and a doctoral degree in Medical Sciences at the University of Aarhus in Denmark.
Dr. Grantcharov is a Professor of Surgery at Stanford University and Associate Chief Quality Officer for Innovation and Safety at Stanford Healthcare.
Prior to joining Stanford, Dr. Grantcharov was a Professor of Surgery at the University of Toronto and Keenan Chair in Surgery at St. Michael’s Hospital in Toronto. He was the Founder of the International Centre for Surgical Safety – a multidisciplinary group of visionary scientists with expertise in design, human factors, computer- and data science, and healthcare research. He previously held Canada Research Chair in Simulation and Surgical Safety and was awarded the Queen Elizabeth II diamond jubilee medal for his contributions to clinical research and patient safety in Canada. Dr. Grantcharov was awarded the honorary fellowship of the Imperial College in London, the honorary fellowships of the Bulgarian, Danish and Brazilian surgical societies, the Spinoza Chair in Surgery from the University of Amsterdam and multiple national and international awards for his contributions to surgical education and surgical safety.
Dr. Grantcharov’s clinical interest is the area of minimally invasive surgery, while his academic focus is in the field of surgical innovation and patient safety. He has become internationally recognized as a leader in this area with his work on curriculum design, assessment of competence and impact of surgical performance on clinical outcomes. Dr. Grantcharov developed the surgical Black Box concept, which aims to transform the safety culture in medicine and introduce modern safety management systems in the high-risk operating room environment.
Dr. Grantcharov has more than 220 peer-reviewed publications and more than 200 invited presentations in Europe, South- and North America. He holds several patents and is the Founder of Surgical Safety Technologies Inc – an academic startup that commercializes the OR Black Box platform. He sits on numerous committees with Surgical Professional Societies in North America and Europe. -
Brooke Gurland, MD, FACS
Clinical Professor, Surgery - General Surgery
BioPelvic floor and functional bowel disorders refer to a series of symptoms and anatomic findings that effect men and women of all ages. These may include: constipation, difficult evacuation, fecal incontinence, irritable bowel disorders, diarrhea, pelvic organ prolapse, urinary and sexual dysfunction and pain. Although not life threatening, these disorders can severely affect quality of life and individual performance.
Over the past two decades I have dedicated my career to working with other specialists for comprehensive care for individuals with pelvic floor disorders. In July 2017, I joined The Department of Surgery, Division of Colorectal Surgery at Stanford University as the Medical Director of the Pelvic Health Center. I previously spent the prior decade at Cleveland Clinic running a multidisciplinary clinic and performing over 200 combined procedures in conjunction with colleagues in urology and urogynecology. We developed a robotic surgical approach to woman with vaginal and rectal prolapse and performed many surgeries to repair intestinal and rectal fistula (abnormal communications between the intestine and vagina).
Prior to that I established a Pelvic Floor Center at Maimonides Medical Center received a Jahnigan Career Development Award looking at multicompartment prolapse in elderly women. In addition to performing surgery and teaching throughout my career, I have maintained a commitment to long-term follow up of patients after surgery.
Although my training and focus is around surgical techniques and solutions for anorectal disorders and pelvic health, I believe that prevention, non-surgical alternatives, diet, exercise, and behavior management are vitally important to patient success.
One of my many goals is to educate patients, health care providers, and trainees about pelvic floor disorders.
When I am not at work I enjoy quality time with my three teenagers, dog, friends and I practice yoga. -
Geoffrey Gurtner
Johnson & Johnson Distinguished Professor of Surgery, Emeritus
Current Research and Scholarly InterestsGeoffrey Gurtner's Lab is interested in understanding the mecahnism of new blood vessel growth following injury and how pathways of tissue regeneration and fibrosis interact in wound healing.
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Beth Habelow
Lecturer, Surgery - Anatomy
BioPhysical therapist, lecturer
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S. Morad Hameed MD MPH
David L. Gregg, MD, Professor
Current Research and Scholarly InterestsTrauma Surgery
Emergency General Surgery
Critical Care
Public Health -
E. John Harris Jr.
Professor of Surgery (Vascular), Emeritus
Current Research and Scholarly InterestsI am interested in thrombosis and the role of thrombin and its receptor in venous wall remodeling following venous thrombosis. I am also interested in vascular hemodynamics and the use of ultrasound, MRI and computational modeling in evaluating arterial flow in exercise conditions.
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Sean Edmund Harris, MB BCh BAO
Clinical Assistant Professor, Surgery - Vascular Surgery
BioDr. Sean Edmund Harris is a board-eligible vascular surgeon with Stanford Health Care Vascular and Endovascular Care. He is also an assistant professor in the Department of Surgery, Division of Vascular Surgery at Stanford University School of Medicine.
Dr. Harris specializes in creating and maintaining dialysis access, working closely with nephrologists to provide complex kidney disease care. His other interests include venous disease management and endovascular management of aortic and peripheral vascular diseases. As a physician-researcher, Dr. Harris has traveled around the world and brings extensive and diverse vascular education back to his patients. He also understands the needs of the local community as a San Francisco Bay Area native.
Dr. Harris has published his findings in several peer-reviewed journals, including Annals of Vascular Surgery, the Journal of the American College of Surgeons, the Journal of Vascular Surgery, and the Journal of Thoracic and Cardiovascular Surgery. He has also shared his expertise globally, presenting leading-edge vascular surgery research at prominent conferences of the Society for Vascular Surgery (SVS), the European Society for Vascular Surgery, and the International Aortic Summit.
Dr. Harris is a member of the New England Society for Vascular Surgery and the SVS. -
Gary E Hartman, MD, MBA
Clinical Professor, Surgery - Pediatric Surgery
Affiliate, Surgery - Pediatric SurgeryCurrent Research and Scholarly InterestsMinimal Access and Robotic Surgery
Neonatal Surgery
Childhood Oncology -
Michelle Hauser, MD, MS, MPA, FACP, FACLM, DipABLM, DABOM, Chef
Clinical Associate Professor, Surgery - General Surgery
Current Research and Scholarly InterestsPrimary care physician, prevention researcher, medical educator and classically-trained chef who combines these fields to move people away from diets that lead to chronic disease and toward eating delicious food that promotes health and well-being.
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Mary Hawn, MD, FACS
Emile Holman Professor of Surgery
Current Research and Scholarly InterestsMy area of research is health services researcher focusing on surgical quality measurement and policy. I have a background and training in epidemiology coupled with my leadership roles in surgical quality measurement. My expertise and extensive experience in evaluation of surgical quality process and outcome linkage has impacted national policy and changed guidelines. We performed a comprehensive evaluation of the Surgical Care Improvement Project (SCIP) implementation using national VA data. Defining robust metrics of surgical quality that are actionable and can lead to sustained improvement in our field are of utmost importance. I also have experience with risk prediction modeling for surgical patients. Our Decision Support for Safer Surgery study developed models of real-time risk prediction for major complications and prospectively validated our models in patients and with expert surgeons. We were able to discern where computational risk prediction has added value and where it falls short. We currently have a national study investigating readmissions following major surgical procedures to identify opportunities for improving care and reducing costs.
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Katherine Hekman
Assistant Professor of Surgery (Vascular Surgery)
BioDr. Hekman earned her Bachelor’s degree at Johns Hopkins University, followed by her MD and PhD at the University of Chicago. She then completed vascular surgery residency at Northwestern University. Dr. Hekman’s primary research focus is on stem cell-based regenerative medicine for treating vascular disease. Her clinical research interests also include reducing surgical site infections, optimizing the care of venous thromboembolism, and promoting wellness in surgical training.
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Jill Helms
Professor of Surgery (Plastic & Reconstructive Surgery)
Current Research and Scholarly InterestsDr. Helms' research interests center around regenerative medicine and craniofacial development.
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Rod Hentz
Professor of Surgery, Emeritus
Current Research and Scholarly Interests1. Nerve regeneration and repair, evaluation of repair methods, modalities to enhance peripheral nerve regeneration, development of improved methods to analyze nerve regeneration.
2. Implementation of functional neuromuscular stimulation to paralytic deformities.
3. Computer modeling of upper limb function. -
Franco Hernandez
Clinical Assistant Professor, Surgery - Plastic & Reconstructive Surgery
BioDr. Franco Hernandez was born and raised in Southern California. He graduated from the University of California, Riverside where he obtained a Bachelor’s in Economics, graduating with honors. He went on to complete his Doctorate of Dental Surgery at the University of Southern California where he spent dedicated time as a selective student with emphasized training in the areas of Oral & Maxillofacial Surgery, Dental Anesthesia, and Public Health. Following graduation, he began his post-graduate training as an Oral & Maxillofacial Surgery intern at Parkland Memorial Hospital / UT Southwestern Medical Center in Dallas, one of the largest level 1 trauma centers in the state of Texas. He continued his training at Stanford University Medical Center where he completed a Dental Medicine, Oral & Maxillofacial clinical instructorship.
Dr. Hernandez diagnoses, treats, and manages a variety of conditions including: odontogenic infection, dentoalveolar trauma, edentulism (partial and complete), non-malignant oral lesions, benign cysts/tumor of the maxilla/mandible, osteonecrosis of the maxilla/mandible, temporomandibular disorders (TMD), and orofacial pain. He routinely performs surgical dental extractions, oral rehabilitation with dental implants, removal of 3rd molars (“wisdom teeth”), bone grafting, excision of benign maxillary/mandibular cysts, as well as management of TMD and Orofacial pain. As a Dental Oncologist, he specializes in dental procedures and surgeries prior to, during, and following head & neck radiation therapy and chemotherapy. As a Hospital Dentist, he performs medically necessary dental procedures and surgeries in the context of extensive cardiac disease, major organ failure/transplant cases, major systemic disease, cancer therapy, and orthopedic surgery. -
Tina Hernandez-Boussard
Professor of Medicine (Biomedical Informatics), of Biomedical Data Science, of Surgery and, by courtesy, of Epidemiology and Population Health
Current Research and Scholarly InterestsMy background and expertise is in the field of computational biology, with concentration in health services research. A key focus of my research is to apply novel methods and tools to large clinical datasets for hypothesis generation, comparative effectiveness research, and the evaluation of quality healthcare delivery. My research involves managing and manipulating big data, which range from administrative claims data to electronic health records, and applying novel biostatistical techniques to innovatively assess clinical and policy related research questions at the population level. This research enables us to create formal, statistically rigid, evaluations of healthcare data using unique combinations of large datasets.
