Current Fellows


Meet our Fellows:

Fellows  Fellows welcome fellows 2026
Fellows Fellows Fellows


 

Gastroenterology Fellows

First-Year Fellows

Shohei Burns, MD
Shohei Burns, MD

Hometown: San Francisco, CA & Tokyo, Japan
Undergraduate: UC Santa Cruz
Medical School: UCSF
Residency: UCSF
Clinical Interests: General GI
Research Interests: Colorectal cancer screening and prevention, clinical analytics and AI, population-level care delivery
Why UCSF for Fellowship: Excellent clinical and research training, supportive mentorship, close friends and family, and the kind of outdoor access and natural beauty that makes the long hours worth it
Hobbies: Surfing, skiing, backpacking, photography, dance


Alyssa Chen, MD, MPH
Alyssa Chen, MD, MPH

Hometown: Dallas, TX
Undergraduate: MIT
Medical School: UT Southwestern
Residency: Mount Sinai
Clinical Interests: General GI, clinical informatics
Research Interests: Informatics and AI, focused on UGI cancer and chronic liver disease prevention
Why UCSF for Fellowship: Welcoming culture and mentorship, excellence in GI, Liver and Informatics, diverse patient population across three hospital sites, and the exciting city of SF
Hobbies: Running, yoga


Sean Dewberry, MD
Sean Dewberry, MD

Hometown: Pasadena, CA
Undergraduate: UC Berkeley
Medical School: USC
Residency: USC
Clinical Interests: General GI, Pancreatology
Research Interests: Pancreatology, Hemtostasis
Why UCSF for Fellowship: Supportive mentorship, strong GI training, caring for complex patients across diverse sites, and living in an incredible city like San Francisco.
Hobbies: Cooking, pickleball, picnics, food


Christine Ganser, MD
Christine Ganser, MD

Hometown: Boston, MA
Undergraduate: Holy Cross
Medical School: Tufts
Residency: MGH
Clinical Interests: General GI, Women's Health & GI, Motility
Research Interests: Hormonal changes and influence on GI disease, pelvic floor dysfunction
Why UCSF for Fellowship: The amazing humans, diverse clinical training sites, interest in women's health throughout the department, getting to live in SF!
Hobbies: yoga, drinking coffee, being close to the ocean, exploring restaurants


Meera Garriga, MD
Meera Garriga, MD

Hometown: Berkeley, CA
Undergraduate: University of Chicago
Medical School: UCSF
Residency: UCSF
Clinical Interests: Transplant Hepatology, Women's Health
Research Interests: Reproductive health & pregnancy outcomes in patients with liver disease
Why UCSF for Fellowship: Strong GI and hepatology training, supportive and kind culture, opportunity to serve my community
Hobbies: Pottery, hiking, salsa dancing


Alexandra Greb, MD
Alexandra Greb, MD

Hometown: Danville, CA
Undergraduate: UC Davis
Medical School: UC Irvine
Residency: UCLA
Clinical Interests: Hepatology
Research Interests: Quality Improvement, malnutrition in GI disorders, alcohol-associated liver disease
Why UCSF for Fellowship: Exceptional clinical training, inspiring mentorship, and a strong commitment to caring for a diverse patient population in a vibrant city close to family and friends
Hobbies: Rollerblading, live music, hiking, gardening, crossword puzzles


Nicolette Johnson, MD, PhD
Nicolette Johnson, MD, PhD

Hometown: Chicago, IL
Undergraduate: University of Iowa
Medical School: Penn
Residency: Penn
Clinical Interests: Hepatology
Research Interests: Liver regeneration, cell plasticity, biliary diseases
Why UCSF for Fellowship: Exciting basic science opportunities, robust support for physician-scientists, strong hepatology culture, the beauty of SF
Hobbies: Cycling, hiking/backpacking, seeing live music, trying new restaurants


Mason Lai, MD, MAS
Mason Lai, MD, MAS

Hometown: San Ramon, CA
Undergraduate: UCLA
Medical School: UCSF
Residency: UCSF
Clinical Interests: Hepatology
Research Interests: Cirrhosis and transplant outcomes and epidemiology, generative AI
Why UCSF for Fellowship: Robust clinical training, supportive faculty and mentorship, strong hepatology research group, close to family and friends
Hobbies:


Jessica Lee, MD
Jessica Lee, MD

Hometown: Houston, TX
Undergraduate: Rice University
Medical School: Icahn School of Medicine at Mount Sinai
Residency: Beth Israel Deaconess Medical Center (BIDMC)
Clinical Interests: Hepatology, Women's GI Health
Research Interests: Reproductive health and pregnancy outcomes in liver disease and IBD, epidemiology, QI
Why UCSF for Fellowship: Strong clinical training across diverse sites, research mentorship from leaders in women's liver and IBD health, living in a new outdoors-friendly city
Hobbies: Running, hiking, co-op games, violin

Second-Year Fellows

Quinten Dicken, MD
Quinten Dicken, MD

Hometown: Richland, WA
Undergraduate: Washington University in St. Louis
Medical School: Boston University
Residency: MGH
Clinical Interests: IBD
Research Interests: IBD
Why UCSF for Fellowship: Fantastic clinical and research mentorship, supportive environment, ability to enhance my skills as an educator
Hobbies: Tennis, basketball, skiing


Madeleine Hu
Madeleine Hu, MD

Hometown: Mountain Lakes, NJ
Undergraduate: The College of New Jersey
Medical School: Rutgers New Jersey Medical School
Residency: UCSF
Clinical Interests: Hepatology
Research Interests: PSC, autoimmune hepatitis, clinical outcomes
Why UCSF for Fellowship: Incredible clinical exposure, excellent research opportunities, and a supportive environment all set in a beautiful city.
Hobbies: Hiking, cooking


Karena Kent
Karena Kent, MD

Hometown: Northridge, CA
Undergraduate: Northwestern University
Medical School: UCSF
Residency: UCSF
Clinical Interests: Interventional Endoscopy
Research Interests: Pancreaticobiliary diseases
Why UCSF for Fellowship: Outstanding clinical training, incredible culture and faculty, and top-notch research oppurtunities.
Hobbies: Dancing, cooking/baking, hiking


Vincent Peng
Vincent Peng, MD

Hometown: Oklahoma City, OK
Undergraduate: Columbia University
Medical School: Washington University in St. Louis
Residency: UCSF
Clinical Interests: IBD
Research Interests: Immunology
Why UCSF for Fellowship: Excellent culture and training environment
Hobbies: Backpacking, skiing, cooking


Ava Runge
Ava Runge, MD

Hometown: Redmond, WA
Undergraduate: Brown University
Medical School: UC Irvine
Residency: UCSF
Clinical Interests: Hepatology
Research Interests: Liver transplant outcomes, health disparities
Why UCSF for Fellowship: Top-notch clinical and research training in a community of wonderful colleagues and mentors
Hobbies: Skiing, pickleball, a beach day with friends/family, reading


Shawn Wen, MD
Shawn Wen, MD

Hometown: San Francisco, CA
Undergraduate: MIT BS, Georgetown MS
Medical School: Emory
Residency: NYU
Clinical Interests: Hepatology
Research Interests: Transplant, LGBTQ health, disparities
Why UCSF for Fellowship: Inspiring faculty, opportunity to care for diverse patients across multiple hospitals, strong commitment to equity and inclusion
Hobbies: Roadtripping to national parks, hiking, biking, longboarding, plays, live music


Royce Zhou
Royce Zhou, MD

Hometown: New York, NY
Undergraduate: Columbia University
Medical School: Icahn School of Medicine at Mount Sinai
Residency: UCSF
Clinical Interests: General GI, IBD
Research Interests: Epigenetics and epigenomics
Why UCSF for Fellowship: The culture--it's the best hospital system I've ever worked in.
Hobbies: Reading, soccer

Third-Year Fellows

Vu Dinh, MD, PhD
Vu Dinh, MD, PhD

Vu Dinh, MD, PhD

Hometown: Anaheim, CA
Undergraduate: Caltech
Medical School: University of Pittsburgh, School of Medicine
Residency: UPMC
Clinical Interests: Advanced endoscopy, Luminal GI
Research Interests: Mucosal immunity, pancreatic diseases
Why UCSF for Fellowship: Being back home in California, closer to my parents, outstanding scientific research, supportive mentors in beautiful San Francisco.
Hobbies: Traveling with my wife, spending time with my son, exploring national parks, reading, hiking, running.


Linda Huang, MD
Linda Huang, MD

Linda Huang, MD

Hometown: Millbrae, CA
Undergraduate: Emory University
Medical School: Keck School of Medicine of USC
Residency: USC/Los Angeles General
Clinical Interests: Advanced endoscopy, general GI
Research Interests: Acute and chronic pancreatitis, pancreato-biliary diseases, nutrition
Why UCSF for Fellowship: Strong clinical training, diversity of patient populations and training sites, supportive faculty and mentorship opportunities, proximity to family in the Bay Area.
Hobbies: Exploring new restaurants, skiing, pilates, taking care of my fluffy (hypoallergenic) Siberian cat.


Osose Oboh, MD, MPH
Osose Oboh, MD, MPH

Osose Oboh, MD, MPH

Hometown: Los Angeles, CA
Undergraduate: University of California, Los Angeles
Medical School: Michigan State University College of Human Medicine
Residency: Osler Medical Residency at Johns Hopkins Hospital
Clinical Interests: General GI
Research Interests: health equity/health disparities within screening modalities, nutrition
Why UCSF for Fellowship: Many likeminded clinicians dedicated to providing equitable care and an environment where you can dream, supportive faculty, exceptional clinical training and exposure to subspecialties.
Hobbies: Traveling (56 countries and counting), trying out local restaurants, storytelling via photography, all things DEI/pipeline/mentorship, any and every party where afrobeats are playing.


Erica Storm, MD
Erica Storm, MD *combined GI/TH fellow

Erica Storm, MD

Hometown: San Francisco, CA
Undergraduate: Pomona College
Medical School: Stanford University School of Medicine
Residency: University of Washington
Clinical Interests: Hepatology
Research Interests: Immune related hepatitis, Immunotherapy-related adverse events, and liver transplantation
Why UCSF for Fellowship: Strong clinical training, particularly in hepatology. Positive and supportive mentorship environment. Happy fellows. Being able to serve my diverse hometown community and being close to family.
Hobbies: Rowing, baking, and sewing my own clothes.


Gloria Tavera, MD, PhD
Gloria Tavera, MD, PhD

Gloria Tavera, MD, PhD

Hometown: Orlando, FL
Undergraduate: University of Florida
Medical School: Case Western Reserve University
Residency: UCSF
Clinical Interests: Luminal disease
Research Interests: Microbiome, gastric cancer
Why UCSF for Fellowship: UCSF is a place where diverse groups of people are leading fascinating basic science and clinical work, having fun and changing paradigms of GI care.
Hobbies: Biking, scuba diving, motorcycles, travel, civic engagement, naps.


Grace Zhang, MD
Grace Zhang, MD

Grace Zhang, MD

Hometown: Gaithersburg, MD
Undergraduate: University of Maryland
Medical School: University of Pittsburgh, School of Medicine
Residency: UCSF
Clinical Interests: Hepatology
Research Interests: Health equity and health disparities in liver transplant
Why UCSF for Fellowship: Strong liver training and amazing liver mentors. Really enjoy living in the Bay Area and all the activities I get to do. Have a lovely community here of supportive friends.
Hobbies: Climbing, boxing, yoga, backpacking, and writing fiction.

Fourth-Year Fellow (Non-ACGME)

Margaret Kelly-Goss, MD, PhD
Margaret Kelly-Goss, MD, PhD

Hometown: Minneapolis, MN
Undergraduate: Tulane University
Medical School: Columbia University
Residency: Massachusetts General Hospital
Clinical Interests: General GI
Research Interests: Fibrosis, vascular biology, vascular malformations, and solutions for identifying/stabilizing occult GI bleeding
Why UCSF for Fellowship: Fantastic research support, robust and diverse clinical training, living in SF
Hobbies: Cooking ambitious meals, seeing stand-up comedy, and traveling with a healthy balance of type I and type II fun!


Wint Thu Saung, MD
Wint Thu Saung, MD

Hometown: Rangoon, Myanmar
Undergraduate: University of Pennsylvania
Medical School: Emory School of Medicine
Residency: Mount Sinai Hospital ​​
Clinical Interests: Liver
Research Interests: Liver Immunology
Why UCSF for Fellowship: The opportunity to receive excellent training in all areas of GI, but especially in hepatology/transplant hepatology, as well as the chance to live in a new city!
Hobbies: I love to travel, and I have lived in many different countries and cities. Growing up I lived in Myanmar, Sierra Leone, India, and Denmark. Within the US, I have lived in Southern California, Philadelphia, Atlanta, and New York.

ACGME Transplant Hepatology Fellows

Diana Cheung, DO
Diana Cheung, DO

Hometown: Brooklyn, NY
Undergraduate: Cornell University
Medical School: NYIT College of Osteopathic Medicine
Residency: Maimonides Medical Center
Clinical Interests: Hepatology, Transplant Hepatology
Research Interests: Viral hepatitis, hepatocellular carcinoma, acute on chronic liver failure, hepatic recompensation
Why UCSF for Fellowship: Rigorous clinical training, outstanding and supportive faculty, breadth and depth of exposure to high acuity liver disease
Hobbies: Yoga, hiking, meditation, and brewing tea


Bryce Tkachuk, MD
Bryce Tkachuk, MD

Hometown: Calgary, Canada
Undergraduate: University of Alberta
Medical School: University of Alberta
Residency: University of Calgary
Clinical Interests: Hepatology, Liver Transplant
Research Interests: Autoimmune liver disease, transplant oncology
Why UCSF for Fellowship: Exceptional training opportunities with a strong clinical and research reputation in the field of transplant hepatology, in addition to internationally renowned and very welcoming faculty! Excited to explore the Bay Area.
Hobbies: Skiing, hiking, pickleball, golfing, and anything with dogs!

Non-ACGME Acute and Chronic Liver Disease Fellows

Anderson Huang, MD
Anderson Huang, MD

Hometown: South Windsor, CT
Undergraduate: Northwestern University
Medical School: University of Connecticut
Residency: Tufts Medical Center
Clinical Interests: General hepatology, transplant hepatology
Research Interests: MASLD, cirrhosis
Why UCSF for Fellowship: Comprehensive clinical training in general and transplant hepatology with the opportunity to work alongside national leaders in the field, diverse patient population
Hobbies: Soccer, cello, pickleball, TCGs

Non-ACGME Advanced Endoscopy Fellow

Donna Leet
Donna Leet, MD

Hometown: Seattle, WA
Undergraduate: Amherst College
Medical School: Harvard
Residency: UCSF
Clinical Interests: pancreaticobiliary endoscopy, endoscopic oncology
Research Interests: translational medicine and multi-omics, endoscopic oncology, RCTs
Why UCSF for Fellowship: Unmatched clinical training and three-hospital system, amazing community and people, research environment, beautiful area.
Hobbies: Triathlon, skiing, hiking, traveling, spending time with my husband and dog

Non-ACGME Advanced IBD Fellow

Charlotte Ching, MD
Charlotte Ching, MD

Hometown: San Francisco, CA
Undergraduate: Middlebury College
Medical School: New York Medical College
Residency: New York Presbyterian / Columbia University Irving Medical Center
Clinical Interests: IBD
Research Interests: Health disparities, IBD phenotypes, epidemiology of immune-mediated diseases
Why UCSF for Fellowship: World-renowned IBD center with outstanding clinical training, unparalleled mentorship, a commitment to growth and scholarship, and the opportunity to serve my diverse hometown community
Hobbies: Traveling, strolling around Lands End or Golden Gate Park, spending time with family

 

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