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Immediate-Past President

Edward W. Holt, MD

Since starting at California Pacific Medical Center in 2013, Dr. Edward “Will” Holt has directed the Fatty Liver program there, leading efforts in clinical practice and clinical research, including coordination of a growing number of clinical trials.  He serves as the Associate Program Director for CPMC’s Transplant Hepatology fellowship.  Dr. Holt’s clinical interests span most topics in general and transplant hepatology, and his research interests are in NAFLD and NASH.  Prior to joining faculty at CPMC, Dr. Holt spent 4 years there as a fellow in Gastroenterology and Transplant Hepatology and 3 years as training in Internal Medicine at the Massachusetts General Hospital in Boston. 



Suraj Gupta, MD

Suraj Gupta, MD is a gastroenterologist at Kaiser San Rafael and San Francisco. Dr. Gupta's areas of special interest is in disorders of the biliary tract and pancreas. He manages common diseases, including: gastroesophageal reflux disease, chronic hepatitis, inflammatory bowel disease, and performs screening exams for colorectal cancer.



Vice President

Robert Wong, MD, MS

Robert Wong, MD, MS is a Clinical Associate Professor of Medicine (Affiliated) in the Division of Gastroenterology and Hepatology, Stanford University School of Medicine, and staff physician in the Gastroenterology and Hepatology Section at VA Palo Alto Healthcare System.  He graduated from University of California, San Francisco School of Medicine, completed internal medicine residency at California Pacific Medical Center and gastroenterology and hepatology fellowship at Stanford University School of Medicine, where he also completed a Master's in Epidemiology and Clinical Research.  He is a Fellow of the American College of Gastroenterology and is actively involved with the American College of Gastroenterology and the American Association for the Study of Liver Diseases committees.  His clinical interests include management of patients with complex liver diseases, including viral hepatitis, hepatocellular carcinoma, and nonalcoholic fatty liver disease.  His research focuses on epidemiology and outcomes in patients with chronic liver disease and healthcare disparities among under-served minority populations.


Board Member

Nik Agarwal, MD

Dr. Nikhil Agarwal is a gastroenterologist in San Francisco, California and is affiliated with multiple hospitals in the area, including California Pacific Medical Center and California Pacific Medical Center-St. Luke's Campus. He received his medical degree from Drexel University College of Medicine and has been in practice between 11-20 years.


Marina Roytman, MD, FACP

Marina Roytman, MD received her medical degree at the Oregon Health Sciences University, Portland, Oregon followed by Internal Medicine residency at Mount Sinai Hospital in New York and Medical Education fellowship at John A. Burns School of Medicine in Hawaii. She is ABIM board certified and holds membership with the American Association of Study of Liver Disease.  Dr. Roytman’s involvement in research encompasses areas in Hepatitis B, Hepatitis C, Drug Induced Liver Injury, Non-Alcoholic Steatohepatitis (NASH), Cirrhosis and Liver Fibrosis. She has presented her research at international, national and regional conferences, and has numerous peer-reviewed publications. Dr. Roytman joined University of California San Francisco, Fresno in August 2017 as Clinical Professor of Medicine for the Department of Medicine and Director of the Liver Program in the Division of Gastroenterology, Hepatology and Nutrition.  



Bilal Hameed, MD

Dr. Bilal Hameed is the Professor of Medicine and the Program Director of the Transplant Hepatology Fellowship Program at the University of California San Francisco. He is the section editor for the journal Gastroenterology. He has authored more than 30 original articles, reviews and book chapters on NASH and ALF in various prestigious journals. He is the PI for Acute liver failure study group (ALFSG) and co-investigator on an NIH-funded study on NASH. He is an investigator on several ongoing clinical trials for patients with NASH, PSC and chronic liver diseases. He is recognized nationally and internationally for his work related to Nonalcoholic Steatohepatitis (NASH) and Acute Liver Failure (ALF). 


Board Member

Elizabeth Hwang, MD, AGAF


Dr. Elizabeth Hwang is Associate Chief of Gastroenterology, Director of Hepatology and Co-Director of Clinic at Santa Clara Valley Medical Center (SCVMC) and an assistant professor (affiliated) at the Stanford University School of Medicine.  She received her medical degree from the Johns Hopkins University School of Medicine and completed internal medicine residency at Columbia, gastroenterology fellowship at Stanford and transplant hepatology fellowship at Columbia.  She is a fellow of the American Gastroenterological Association and a member of the American Association for the Study of Liver Diseases and American Society of Gastrointestinal Endoscopy.  Her clinical focus is in liver disease, particularly viral hepatitis, and she works closely with the County of Santa Clara Public Health and Custody Health Departments to expand screening and treatment access throughout the county.  She is also heavily involved with teaching, curriculum development and mentorship of fellows, residents and medical students. 


Board Member

Christina Chou, MD


Christina Chou, MD is a graduate of the Case Western Reserve University School of Medicine in Cleveland. She completed her internship and residency in Internal Medicine at California Pacific Medical Center (CPMC). She then completed an Advanced Hepatology fellowship at Stanford University Hospitals and Clinics and returned to CPMC for her Gastroenterology and Hepatology fellowship. She is currently part of the gastroenterology faculty at Alameda Health System - Highland Hospital and serves as the Director of GI Education. She has an interest in gastrointestinal motility disorders and medical education.


Board Member

APP Committee Chair

Maria Josephina Gomez, NP

Maria Josephina T. Gomez (Josie) received her BSN from San Francisco State University in 1989. She began her career by working on a medical-surgical floor in a county facility. She subsequently worked in the first AIDS program in San Mateo County, then transitioned to home care nursing in Marin County after several years. Part of her time in home health nursing was spent practicing in the Northern Mariana Islands.  Once home,  she applied, and was accepted, to the UCSF Family Nurse Practitioner program and received her MSN in 2001. Her desired focus was the use of  healthcare to promote self-care and increase self esteem in underserved women, and effect transgenerational change between women and their children.

As a NP she worked in Primary Care and Pediatrics with the homeless population of the South Bay. She then undertook care of patients with wounds in the ZSFG Hospital and took her skills to help establish the Wound Care Clinic at St. Mary's Hospital.

Following this she transitioned to Gastroenterology, initially specializing in general gastroenterology and conditions of the pancreas, then IBD and motility. She calls UCSF her career home.

When she is not writing her notes in EPIC she spends time travelling, taking hikes, and looking for pets to adopt.


Board Member

Allison Kwong, MD


Allison Kwong, MD is a transplant hepatologist at Stanford University. She received her medical degree at Mount Sinai School of Medicine and completed fellowships in gastroenterology at Stanford University and advanced/transplant hepatology at University of California, San Francisco. She is an active member of the American Association for the Study of Liver Diseases (AASLD) and received the Clinical, Translational, and Outcomes Research Award from the AASLD Foundation. Her clinical and research interests include cirrhosis, portal hypertension, liver transplantation, and alcohol-associated liver disease.


Board Member

Eric Mao, MD


Eric Mao, MD is an Assistant Clinical Professor of Medicine at the University of California Davis. He received his medical degree and completed internal medicine and gastroenterology training at Brown University in Rhode Island. He completed an advanced fellowship on inflammatory bowel disease at University of California San Francisco. He has clinical and research interests in inflammatory bowel disease and directs the inflammatory bowel disease program at the University of California Davis. 


Board Member

APP Committee Co-Chair

Devon Kiker, FNP-C

Devon Kiker, FNP-C is a nurse practitioner at UCSF-Fresno, CA


Board Member

Neil Stollman, MD

Neil Stollman MD received his medical degree from the New York University School of Medicine, completed a Residency and Chief Residency in Internal Medicine at The College of Physicians and Surgeons of Columbia University in New York, and his Fellowships in Gastroenterology and Advanced Therapeutic Endoscopy at the University of Miami School of Medicine.  He is currently an Associate Clinical Professor of Medicine at UCSF, Chief of the Division of Gastroenterology at Alta Bates Summit Medical Center in Oakland, and prior Chief of Gastroenterology at the Miami VA Medical Center and San Francisco General Hospital.  An expert in C difficile infection and fecal transplantation, diverticular disease and H pylori, he has published his work in journals such as Lancet, Gastroenterology, the American Journal of Gastroenterology, and Gastrointestinal Endoscopy.  He has served on the American Gastroenterological Association Research and Clinical Guidelines Committees, the American College of Gastroenterology Educational Affairs, Patient Care, and Credentialing Committees and the Editorial Advisory Board of Gastrointestinal Endoscopy.  Dr. Stollman is also a Fellow of the American Gastroenterological Association (AGA) and the American College of Gastroenterology (ACG).  He is the immediate past Chairman of the ACG Board of Governors and a current Trustee.


Board Member

Rosa Valadao, MD

Rosa Valadao, MD is a gastroenterologist at Kaiser Permanente East Bay in San Francisco, CA.


Board Member

Fellow Representative

Mike Wei, MD

I am a gastroenterologist who hopes to provide high-quality and exceptional medical care to every patient, every day. I hope to provide care that focuses on their wishes and provides the best outcomes and experience. I have an interest in advanced endoscopy and hope to pursue an additional fellowship in this upon completion of my current fellowship in gastroenteroloy and hepatology. I have a passion for research to help improve our clinical care of our patients.

Board Member

Kidist Yimam, MD

Dr. Kidist K. Yimam is a Transplant Hepatologist and the Medical Director of California Pacific Medical Center (CPMC), San Francisco, CA, Autoimmune Liver Disease (AILD) Program. She is also the Director of CPMC’s Cholangiocarcinoma Program, Director of the Autoimmune Liver Disease Research Fellowship, and serves as a Research Advisor for the Internal Medicine Residency Program.

She is a founding member of the North America Consortium for Autoimmune Liver Diseases (CALiD) and has served as a member of its steering committee. Dr. Yimam is engaged in efforts in promoting healthcare equality locally and nationally in collaboration with the American Liver Foundation where she serves as a member of its medical advisory board.

She is involved in promoting Women’s Health and has served as American Association for the Study of Liver Diseases (AALSD)’s Women Health Representative for the last 3 years with significant contributions including the formation of the first Women’s Health in Liver Diseases Program at The Liver Meeting which has now become a recurring yearly event at the Liver Meeting main forum. She currently serves as a member of AASLD’s Global Health Outreach and Engagement Committee, and a member of its sub-Saharan Africa working group. Dr. Yimam is dedicated to promoting AASLD’s engagement and collaboration with colleagues in Africa to promote research, education, and improved patient care in the region.


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