The 20 Best Islet Cell Transplantation Doctors near San Francisco, CA
Find the Experts and Specialists who perform Islet Cell Transplantation
Bariatric Surgery Center
Dr. Andrew Posselt, a bariatric and transplant surgeon, is co-director of the Pancreatic Islet Transplantation Program at UCSF Medical Center. He specializes in adult and pediatric kidney, liver and pancreas transplantation, as well as laparoscopic and open (traditional) bariatric surgery. In addition to caring for patients, Posselt conducts research on pancreatic islet cell transplantation, a procedure that can allow people with type 1 diabetes to discontinue insulin therapy. He also investigates mechanisms by which a transplant recipient's body rejects or tolerates tissue from a donor who isn't genetically identical, and he studies the metabolic and biochemical consequences of bariatric surgery. Posselt earned his medical degree and a doctorate in immunology from the University of Pennsylvania. He completed residencies in internal medicine and general surgery as well as a transplant fellowship at UCSF, before joining the staff in 2003. Posselt is a member of several professional and honorary societies, and has given presentations on transplant issues related to patient care and research. At UCSF, he supervises residents and fellows in transplant services and general surgery. Dr. Posselt is rated as an Elite provider by MediFind in Islet Cell Transplantation. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Obesity, Chronic Pancreatitis, Childhood Pancreatitis, Islet Cell Transplantation, and Sleeve Gastrectomy. Dr. Posselt is board certified in American Board Of Surgery, General Surgery. Dr. Posselt is currently accepting new patients.
Van Ness Campus MOB
Casey Ward is a General Surgeon practicing medicine in San Francisco, California. Dr. Ward is rated as an Experienced provider by MediFind in Islet Cell Transplantation. His clinical expertise encompasses Cavernous Lymphangioma, Cystic Hygroma, Abdominal Cystic Lymphangioma, Pancreas Transplant, and Islet Cell Transplantation. Dr. Ward is board certified in Surgery - Board Certified. Dr. Ward is currently accepting new patients.
Diabetes Clinic At Parnassus
Dr. Umesh Masharani is an endocrinologist who cares for patients with diabetes and thyroid disorders. He also has an endocrine faculty practice. Masharani's research focuses mainly on diabetes, with a particular interest in insulin resistance. He collaborates with colleagues in the family medicine departments to examine the relationships among glucose control, depression and psychosocial stress in people with diabetes. He is part of the islet auto-transplantation group, which has an active program managing patients who require surgical removal of the pancreas for chronic pancreatitis and are candidates for islet auto-transplant, a procedure that allows the patient's body to continue producing insulin. The islet transplant group is also studying donor islet transplants as a treatment for type 1 diabetes. In addition, Masharani is collaborating with Dr. George Brooks, a professor of integrative biology at the University of California, Berkeley, to examine the impact of exercise and aging on mitochondrial function. Masharani earned his bachelor's degree in physiological sciences at the University of Oxford. He earned his medical degree at Middlesex Health in London. He completed his residency in internal medicine at University Hospitals Birmingham NHS Foundation Trust in Birmingham, England. He completed a fellowship in endocrinology at UCSF. Dr. Masharani is rated as an Experienced provider by MediFind in Islet Cell Transplantation. He is also highly rated in 29 other conditions, according to our data. His clinical expertise encompasses Type 1 Diabetes (T1D), Anaplastic Thyroid Cancer, Thyroid Cancer, Type 2 Diabetes (T2D), and Islet Cell Transplantation. Dr. Masharani is board certified in American Board Of Internal Medicine, Endocrinology Diabetes & Metab. Dr. Masharani is currently accepting new patients.
Madison Clinic For Pediatric Diabetes
Stephen Gitelman is a Pediatric Endocrinologist practicing medicine in San Francisco, California. Dr. Gitelman is rated as an Experienced provider by MediFind in Islet Cell Transplantation. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Type 1 Diabetes (T1D), Low Blood Sugar, Diabetic Ketoacidosis, Islet Cell Transplantation, and Gastrostomy.
Gastrointestinal Surgical Oncology Clinic
Dr. Kenzo Hirose is a surgeon who cares for patients with benign or cancerous conditions affecting the liver, pancreas and bile ducts. He has expertise in using minimally invasive surgical techniques, which are generally safer and cause less post-op pain than traditional surgery. In his research, Hirose is interested in improving patient outcomes after surgery. Hirose earned his medical degree at Harvard Medical School. He completed a residency in general surgery at UCSF and a fellowship in liver, pancreatic and biliary tract surgery at the Cleveland Clinic. Dr. Hirose is rated as an Advanced provider by MediFind in Islet Cell Transplantation. He is also highly rated in 19 other conditions, according to our data. His clinical expertise encompasses Pancreatic Cancer, Chronic Pancreatitis, Hereditary Pancreatitis, Pancreatectomy, and Pancreaticoduodenectomy. Dr. Hirose is board certified in American Board Of Surgery, General Surgery. Dr. Hirose is currently accepting new patients.
Cardiac Surgery Program
Dr. Tobias Deuse is a heart surgeon and the director of minimally invasive cardiac surgery at UCSF. He is known for his pioneering work in developing minimally invasive techniques for mitral valve repair. Deuse earned his medical degree from the University of Würzburg in Germany. He received advanced training in heart and lung surgery at the University Hospital of Munich and University Heart Center Hamburg. After obtaining board certification in Germany as a heart surgeon, he completed a fellowship in lung and heart-lung transplantation with Stanford Medicine. After returning to Germany in 2009, Deuse was appointed director of heart and lung transplantation at the University Heart Center Hamburg. He achieved international acclaim for his development of innovative approaches to heart failure surgery, most notably minimally invasive techniques for implanting ventricular assist systems. He also demonstrated that high success rates could be achieved in mitral valve repair utilizing fully robot-assisted endoscopic surgery. Also known as keyhole surgery, this approach has many benefits for the patient, including substantially reduced postsurgical pain, shorter hospital stays and faster recovery. Deuse has received numerous honors, including election to the board of directors of the International Society for Heart and Lung Transplantation. Dr. Deuse is rated as an Experienced provider by MediFind in Islet Cell Transplantation. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Mitral Valve Regurgitation, Aortic Valve Stenosis, Mitral Stenosis, Heart Transplant, and Heart Valve Repair. Dr. Deuse is currently accepting new patients.
Kidney Transplant Center
Dr. Garrett R. Roll is a general surgeon who specializes in abdominal organ transplantation. He cares for both adults and children, performing liver and kidney transplants using living donors; complex procedures involving the liver, pancreas, gallbladder and bile ducts; and kidney autotransplants (removing a diseased kidney to treat a challenging problem with the ureter, then placing the kidney back into the patient). He also provides surgical care for patients with end-stage organ disease and patients on immunosuppressive therapies. His expertise includes using minimally invasive techniques. Roll is an investigator on clinical trials looking at outcomes for organ transplant recipients and at advanced organ preservation (storing organs for future transplantation). He serves in leadership roles for several patient safety and quality improvement committees at UCSF, in addition to teaching medical students and residents. He is also on the editorial board of multiple peer-reviewed journals. Roll earned his medical degree from the Lewis Katz School of Medicine at Temple University. He completed a residency in general surgery and a fellowship in abdominal transplant surgery at UCSF, while also studying liver cell therapy and liver regeneration in Dr. Holger Willenbring's laboratory. After completing his training, he was a senior international fellow in liver retrieval and transplant at Queen Elizabeth Hospital Birmingham, which has the busiest liver surgery unit in the United Kingdom. During this time, he gained experience with donation after circulatory death (DCD) liver transplantation and a method of preserving donated livers during transport called normothermic machine perfusion. Dr. Roll is rated as an Experienced provider by MediFind in Islet Cell Transplantation. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Liver Failure, Liver Cancer, Mesenteric Venous Thrombosis, Liver Transplant, and Kidney Transplant. Dr. Roll is board certified in American Board Of Internal Medicine, Surgery. Dr. Roll is currently accepting new patients.
Gastrointestinal Surgical Oncology Clinic
Ryutaro Hirose is a Nephrologist practicing medicine in San Francisco, California. Dr. Hirose is rated as an Experienced provider by MediFind in Islet Cell Transplantation. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Liver Failure, Liver Cancer, Chronic Antibody-Mediated Rejection, Kidney Transplant, and Liver Transplant.
Liver Tumor Clinic
Charles Rickert is a General Surgeon practicing medicine in San Francisco, California. Dr. Rickert is rated as an Experienced provider by MediFind in Islet Cell Transplantation. His clinical expertise encompasses Liver Failure, Liver Transplant, and Islet Cell Transplantation.
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Last Updated: 04/28/2026





