Stanford University
Showing 1-5 of 5 Results
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Dan Riskin
Clinical Professor (Affiliated), Surgery - General Surgery
Staff, Surgery - General SurgeryBioDr. Riskin is a Clinical Professor of Surgery at Stanford University and a physician–entrepreneur focused on the application of artificial intelligence in healthcare. His work spans clinical practice, company building, and public policy, with a focus on using clinical data to improve care.
He has founded and led multiple healthcare technology companies applying artificial intelligence to clinical data, with products used by leading health systems, pharmaceutical companies, and insurers and influencing the care of millions of patients. He is the CEO of Verantos, a healthcare AI company focused on improving the reliability of real-world clinical data used in research and care.
Dr. Riskin has contributed to health policy in the United States and internationally, including Congressional testimony related to the 21st Century Cures Act and service on the U.S. Health Information Technology Advisory Committee (HITAC). His work has been featured in The Wall Street Journal and Forbes.
Dr. Riskin received his MD from Boston University, completed residency in surgery at UCLA, and fellowship training in critical care and acute care surgery at Stanford University. He is board-certified in surgery, critical care, palliative care, and clinical informatics. He also holds an MBA from the Massachusetts Institute of Technology and was a Stanford Biodesign Innovation Fellow. -
Perisa Ruhi-Williams, MD
Clinical Assistant Professor (Affiliated), Surgery - General Surgery
Staff, Surgery - General SurgeryBioDr. Perisa Ruhi-Williams is a board-certified General Surgeon practicing at the VA Palo Alto Health Care System. Her clinical practice is centered on utilizing robotic-assisted techniques for metabolic/bariatric surgery and hernia and abdominal wall reconstruction.
She graduated as an Echols Scholar with a Bachelor of Science in Biology from the University of Virginia. She earned her MD from the Virginia Tech Carilion School of Medicine and completed her General Surgery residency at the University of California, Irvine. While in residency, she served as the Chief Resident in Quality and Patient Safety at the VA Long Beach Medical Center. She subsequently completed an advanced fellowship in Minimally Invasive Surgery, Bariatrics, and Foregut Surgery at Stanford Health Care.
Dr. Ruhi-Williams is passionate about advancing surgical education and the wellness of surgical trainees. In addition to her clinical roles, she serves as the Site Director for the Surgery Core Clerkship at VA Palo Alto and Assistant Site Director for the General Surgery Residency Program at VA Palo Alto. -
Brian Ruhle, MD, MS
Clinical Assistant Professor, Surgery - General Surgery
BioDr. Ruhle is a board-certified surgeon with dual fellowship training in bariatric and minimally invasive surgery from Stanford Health Care and endocrine surgery from UCLA Health. He also serves as a clinical assistant professor in the Department of Surgery, Division of General Surgery at Stanford University School of Medicine.
Dr. Ruhle specializes in bariatric (weight loss) surgery, foregut (upper digestive tract) 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 therapy for obesity management, improved screening and treatment of endocrine disorders, and optimizing outcomes in thyroid and parathyroid surgery. He has published his findings in numerous peer-reviewed journals, including Surgery, Journal of Gastrointestinal Surgery, Blood, and Journal of the American College of Surgeons.
During his surgical training, Dr. Ruhle presented at prominent national and regional meetings, including the annual meetings of the American Association of Endocrine Surgeons and American College of Surgeons Clinical Congress. His presentations have addressed innovative topics such as using GLP-1 agonists (medications that help regulate blood sugar and reduce appetite) before bariatric surgery. His presentations have also addressed improving screening protocols for hyperaldosteronism (high blood pressure caused by the excess production of the hormone aldosterone).
Dr. Ruhle is a member of the American Association of Endocrine Surgeons, American Society for Metabolic and Bariatric Surgery, Clinical Association of California Endocrinologists, and Society of American Gastrointestinal and Endoscopic Surgeons. -
Alejandra Ruiz
Postdoctoral Scholar, General Surgery
BioDr. Alejandra Ruiz is a physician scientist with experience in high-complexity medical settings, including oncology and intensive care. She is a strong advocate for integrative care, addressing both physical and mental health needs. Currently, Dr. Ruiz is a postdoctoral researcher in both the Department of of Emergency Medicine and the Department of Surgery, where she investigates the barriers faced by underserved communities when seeking health care while developing strategies to improve access and connection to health services. Deeply committed to community based participatory research and health advocacy, Dr. Ruiz is dedicated to creating sustainable pathways for underserved populations to receive comprehensive care.
