School of Medicine
Showing 101-120 of 153 Results
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Brian Ruhle, MD, MS
Clinical Assistant Professor, Surgery - General Surgery
BioDr. Brian Ruhle is a board-certified surgeon with dual-fellowship training in minimally invasive bariatric (weight loss) surgery and endocrine surgery. He is also a clinical assistant professor in the Department of Surgery, Division of General Surgery at Stanford University School of Medicine.
Dr. Ruhle specializes in bariatric surgery, foregut (upper digestive tract) surgery, adrenal surgery, and abdominal wall reconstruction. He uses leading-edge laparoscopic and robotic surgical techniques to help patients achieve sustainable weight loss and improve obesity-related health conditions. His expertise in advanced minimally invasive procedures offers patients significant benefits, including faster recoveries, reduced pain, and shorter hospital stays.
Dr. Ruhle’s research interests span a wide range of topics in metabolic and bariatric surgery. His studies have explored combination therapies for managing obesity, improvements in screening and treating endocrine disorders, and optimizing outcomes in thyroid and parathyroid surgeries. He has published his findings in many peer-reviewed journals, including Surgery, Journal of Gastrointestinal Surgery, and Journal of the American College of Surgeons.
Dr. Ruhle has presented at prominent national conferences, including the annual meetings of the American Association of Endocrine Surgeons and the American College of Surgeons Clinical Congress. His presentations have discussed using GLP-1 receptor agonists (weight loss medications that help regulate blood sugar and reduce appetite) before and after bariatric surgery. He has also addressed improving screening protocols for hyperaldosteronism (high blood pressure caused by excess production of the hormone aldosterone by the adrenal gland).
Dr. Ruhle is a member of the American Association of Endocrine Surgeons, the American Society for Metabolic and Bariatric Surgery, and the Society of American Gastrointestinal and Endoscopic Surgeons. -
Alejandra Ruiz
Postdoctoral Scholar, General Surgery
BioDr. Alejandra Ruiz is a physician-scientist working at the intersection of clinical medicine, health services research, and community-engaged intervention design. Based on her clinical experience in high-complexity settings, she works to optimize integrative care models that address both physical and mental health needs.
She is currently a postdoctoral researcher in the Departments of Emergency Medicine and General Surgery, where she examines structural barriers to care among underserved populations and develops pathways to improve access and care delivery. Her work is grounded in community-based participatory research, through which she designs, implements, and evaluates culturally responsive interventions. Dr. Ruiz is committed to advancing equitable, sustainable models of care that improve access, engagement, and patient outcomes. -
Yann Sakref
Postdoctoral Scholar, General Surgery
BioYann Sakref is a Postdoctoral Scholar in General Surgery at Stanford University, working within the Knowlton Lab. With a passion for interdisciplinary sciences and advancing medical biotechnology and patient care, Yann is developing clinical and AI solutions as part of an ARPA-H-funded project under Dr. Knowlton's supervision. His work focuses on creating computer vision models for surgical assistance and contributing to the collaborative development of innovative tools by working closely with clinical, engineering, and AI teams. He also works closely with collaborators at the S-SPIRE Center.
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Carolyn Dacey Seib, MD, MAS
Associate Professor of Surgery (General Surgery)
BioDr. Carolyn Dacey Seib is a fellowship-trained endocrine surgeon and board-certified general surgeon who specializes in surgery of the thyroid, parathyroid, and adrenal glands. In 2025, she was among the first surgeons in the United States to earn a Focused Practice Designation in Complex Thyroid and Parathyroid Surgery from the American Board of Surgery, reflecting her expertise in these procedures and related patient management.
Dr. Seib provides comprehensive and personalized care for patients with thyroid, parathyroid, and adrenal disorders, including thyroid cancer, hyperthyroidism, primary hyperparathyroidism, primary aldosteronism, autonomous cortisol secretion, and pheochromocytomas. Her approach combines advanced surgical techniques with a focus on patient-centered outcomes, ensuring that each treatment plan is tailored to the individual.
In addition to her clinical practice, Dr. Seib is an NIH-funded researcher whose work focuses on optimizing surgical decision-making and outcomes for patients with endocrine disorders. She has received research support from the National Institute on Aging and the American Thyroid Association, and her studies have been published in leading peer-reviewed journals and featured in national media, including The New York Times.
Dr. Seib completed her undergraduate education at Princeton University (summa cum laude), earned her medical degree from the New York University School of Medicine, and completed her general surgery residency and endocrine surgery fellowship at the University of California, San Francisco (UCSF). -
Saurabh Sharma
Postdoctoral Scholar, General and Vascular Surgery
Current Research and Scholarly InterestsWe develop strategies to transport immunotherapeutic molecules across the blood-brain barrier for imaging and treating brain metastatic cancer. Currently, under the mentorship of Dr. Amanda Kirane, I have continued my work in cancer-targeted nanotechnology for the treatment of melanoma brain metastases. Immunotherapy of small peptides, small molecules.
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Andrew A. Shelton, MD, FACS, FACRS
Current Research and Scholarly InterestsMultimodality treatment of rectal cancer
Sphincter preserving procedures for rectal cancer
Laparoscopic colon and rectal surgery
Surgical education -
Samuel So, MD
Lui Hac Minh Professor in the School of Medicine
Current Research and Scholarly InterestsThrough a 4 pronged comprehensive program: translational and clinical research, early detection and treatment, promoting education, awareness and immunization and building partnership, we are working towards the development of new strategies that will lead to the elimination of hepatitis B worldwide and reduce the threat and incidence of liver cancer. Current research efforts focus on evaluating potential new diagnostic and treatment markers and novel targeted therapy for primary liver cancer.
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David A. Spain, MD
Professor of Surgery (General Surgery)
Current Research and Scholarly InterestsOur main areas of interest are
1. clinical research in trauma and critical illness
2. economics of this care
3. PTSD and stress response after critical injury or illness -
Kristan Staudenmayer, MD, MS, FACS
Associate Professor of Surgery (General Surgery)
Current Research and Scholarly InterestsDefining the Impact of Injuries in the Elderly
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Kimberly Stone, MD
Clinical Associate Professor, Surgery - General Surgery
BioKimberly Stone, MD is a board certified General Surgeon who specializes in breast surgical oncology and melanoma surgery. She treats all conditions related to breast health including: breast cancer, high risk prevention and screening, benign breast disease, and conditions related to lactation.
Dr. Stone completed a breast surgical oncology fellowship at UCSF, where she trained in all aspects of breast surgical oncology, and melanoma surgery. Dr Stone performs all types of breast surgery including total skin and nipple sparing mastectomy, wireless lumpectomy, benign breast disease excisions and axillary surgery. She works closely with plastic and reconstructive surgeons to offer women the best possible cosmetic options and results following treatment. Dr Stone performs melanoma surgery including wide local excision, sentinel lymph node biopsy, and lymph node dissections for melanoma.
Dr. Stone strives to deliver compassionate, patient-centered surgical care that is expert and evidence-based while at the same time customized to the unique needs of each patient. She believes that patient empowerment and education are at the heart of an excellent care team.
