
Overview
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 highly rated in 12 conditions, according to our data. His top areas of expertise are Obesity, Chronic Pancreatitis, Childhood Pancreatitis, Islet Cell Transplantation, and Sleeve Gastrectomy.
His clinical research consists of co-authoring 65 peer reviewed articles and participating in 1 clinical trial. MediFind looks at clinical research from the past 15 years.
Graduate Institution
Residency
Specialties
Licenses
Board Certifications
Fellowships
Hospital Affiliations
Languages Spoken
Gender
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
Accepted plan types not found. Please verify directly with the provider.
- HMO
- INDEMNITY
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER MEDICARE
- POS
- PPO
- OTHER MANAGED MEDICAID
- OTHER MEDICAID
- STATE MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE SNP
- EPO
- HMO
- POS
- PPO
- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
- HMO
- INSURANCE PLAN
- MEDICARE DISCOUNT CARD
- MEDICARE MAPD
Locations
400 Parnassus Ave., Second Floor, San Francisco, CA 94143
400 Parnassus Ave., Seventh Floor, San Francisco, CA 94143
400 Parnassus Ave., Seventh Floor, Room A701, San Francisco, CA 94143
1825 Fourth St., Fourth Floor, San Francisco, CA 94158
400 Parnassus Ave., Seventh Floor, San Francisco, CA 94143
400 Parnassus Ave., 7th Floor, San Francisco, CA 94143
Additional Areas of Focus
Dr. Posselt has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
1 Clinical Trials
Liver Disease And Liver Transplant
Dr. Jennifer C. Lai is a general and transplant hepatologist who specializes in caring for patients with chronic viral hepatitis, autoimmune disorders or cirrhosis, particularly those awaiting liver transplantation. Lai is active in patient-oriented research in three major areas: integrating core geriatric issues – such as frailty, disability, need for palliative care and multimorbidity (having more than one disease) – to patients with cirrhosis, investigating disparities in organ allocation and distribution, and assessing the impact of liver donor quality on outcomes. As principal investigator for the Functional Assessment in Liver Transplantation (FrAILT) Study funded by the National Institutes of Health, Lai applies measures of frailty and functional status to patients with end-stage liver disease awaiting transplantation. Her research lays the groundwork for preparing these patients with therapeutic interventions that may improve their outcomes and quality of life. She is director of hepatology research at UCSF. Lai earned her undergraduate degree from Stanford University and combined medical and master of business administration degrees from Tufts University. She completed her residency at New York–Presbyterian Hospital and fellowships in gastroenterology and transplant hepatology at UCSF. Lai is a member of the American Association for the Study of Liver Diseases, American Society of Transplantation, American Gastroenterological Association and American College of Gastroenterology. She is a fellow of the American College of Physicians. Dr. Lai is highly rated in 23 conditions, according to our data. Her top areas of expertise are Liver Failure, Ascites, Cirrhosis, Liver Transplant, and Kidney Transplant.
Liver Disease And Liver Transplant
Dr. Bilal Hameed is a specialist who cares for patients with liver disease. His expertise includes providing care before and after liver transplantation. Hameed earned his medical degree at Dow University of Health Sciences in Pakistan and completed an internal medicine residency at the University of Minnesota. He completed a fellowship in gastroenterology at the University of Minnesota and a fellowship in transplant hepatology at UCSF. In addition to authoring numerous peer-reviewed articles, Hameed has received many awards and honors in his field. He is a member of the American Association for the Study of Liver Diseases, American Gastroenterological Association and American Society of Transplantation. Dr. Hameed is highly rated in 27 conditions, according to our data. His top areas of expertise are Nonalcoholic Steatohepatitis (NASH), Liver Failure, Non-Alcoholic Fatty Liver Disease, Liver Transplant, and Lithotripsy.
Office
Aijaz Ahmed is a Transplant Surgeon in Palo Alto, California. Dr. Ahmed is highly rated in 32 conditions, according to our data. His top areas of expertise are Hepatitis, Hepatitis C, Non-Alcoholic Fatty Liver Disease, Liver Transplant, and Hepatectomy.
Frequently Asked Questions about Dr. Andrew Posselt
How do I make an appointment with Dr. Andrew Posselt?
You can book an appointment with Dr. Andrew Posselt by calling their office at 415-353-2804. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. Andrew Posselt a top-rated expert for Islet Cell Transplantation?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. Andrew Posselt is classified as an Elite expert for Islet Cell Transplantation, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. Andrew Posselt specialize in?
While Dr. Andrew Posselt is a Gastroenterology, they have specific expertise in Islet Cell Transplantation, Sleeve Gastrectomy, and Gastrectomy. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.
Does Dr. Andrew Posselt participate in research or clinical trials?
Yes. Dr. Andrew Posselt has published 65 articles and abstracts on conditions like Islet Cell Transplantation. You can view a list of Dr. Andrew Posselt's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.
Does Dr. Andrew Posselt accept my insurance?
Dr. Andrew Posselt accepts most major insurance plans, including Anthem BCBS and Arkansas Health and Wellness. We recommend calling the office directly at 415-353-2804 to verify that your specific plan is currently accepted before your visit.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Elite
- Islet Cell TransplantationDr. Posselt isElite. Learn about Islet Cell Transplantation.
- Distinguished
- GastrectomyDr. Posselt isDistinguished. Learn about Gastrectomy.
- Gastric BypassDr. Posselt isDistinguished. Learn about Gastric Bypass.
- Sleeve GastrectomyDr. Posselt isDistinguished. Learn about Sleeve Gastrectomy.
- Advanced
- Childhood PancreatitisDr. Posselt isAdvanced. Learn about Childhood Pancreatitis.
- Chronic PancreatitisDr. Posselt isAdvanced. Learn about Chronic Pancreatitis.
- Hereditary PancreatitisDr. Posselt isAdvanced. Learn about Hereditary Pancreatitis.
- Kidney TransplantDr. Posselt isAdvanced. Learn about Kidney Transplant.
- Liver TransplantDr. Posselt isAdvanced. Learn about Liver Transplant.
- ObesityDr. Posselt isAdvanced. Learn about Obesity.
- Experienced
- Acute PancreatitisDr. Posselt isExperienced. Learn about Acute Pancreatitis.
- Bile Duct StrictureDr. Posselt isExperienced. Learn about Bile Duct Stricture.
- CholangitisDr. Posselt isExperienced. Learn about Cholangitis.
- CholedocholithiasisDr. Posselt isExperienced. Learn about Choledocholithiasis.
- Chronic Antibody-Mediated RejectionDr. Posselt isExperienced. Learn about Chronic Antibody-Mediated Rejection.
- End-Stage Renal Disease (ESRD)Dr. Posselt isExperienced. Learn about End-Stage Renal Disease (ESRD).


