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.

  • Education

    University of Pennsylvania School of Medicine, 1993

  • Residencies

    UCSF Medical Center, Internal Medicine, 1996

    UCSF Medical Center, Surgery, 2000

  • Board Certifications

    Surgery, American Board of Surgery

  • Academic Title

    Professor

  • Languages

    Czechoslovakian

    French

    German

    Spanish

I consciously take my time with patients. If they have questions, I’ll listen. It makes a huge difference.

Bariatric Surgery Center

400 Parnassus Ave., Second Floor
San Francisco, CA 94143

Kidney Transplant Center

400 Parnassus Ave., Seventh Floor
San Francisco, CA 94143

Liver Transplant Program

400 Parnassus Ave., Third Floor
San Francisco, CA 94143

Pancreas Transplant Services

400 Parnassus Ave., Seventh Floor
San Francisco, CA 94143

Total Pancreatectomy – Islet Auto-Transplant (TP-IAT) Clinic

400 Parnassus Ave., 7th Floor
San Francisco, CA 94143-0780

Decorative Caduceus

Treatment of Type I Diabetes by Islet Transplantation Into the Gastric Submucosa Study Protocol

The goal of this trial is to gain initial clinical experience regarding the safety and efficacy of treating type I diabetes in people who have received a kidney transplant by transplanting islets into a new transplan...

Recruiting

My work

Watch Dr. Posselt's story

Cancer patient receives the gift of a lifetime

Doctor stories - Andrew Posselt

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