Current Fellows

Gastroenterology Fellows

ACGME Fellows:

Non-ACGME Fellows:

ACGME Transplant Hepatology Fellows

Advanced Endoscopy Fellow

First-Year Fellows

Edgar Corona, MD
Edgar Corona, MD

Hometown: Baldwin Park, CA
Undergraduate: UCLA
Medical School: UCLA David Geffen School of Medicine
Residency: UCSF
Clinical Interests: General GI
Research Interests: Colorectal cancer screening and prevention, health care systems improvement, quality improvement 
Why UCSF for Fellowship: Incredible mentors, diverse city and patient population, comprehensive GI department, strong research enterprise 
Hobbies: Camping, reading, binging too much TV, trying new restaurants, dancing

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!

Afshin Khan, MD
Afshin Khan, MD

Hometown: Karachi, Pakistan
Undergraduate: Pomona College
Medical School: Tulane University
Residency: Cleveland Clinic
Clinical Interests: General GI
Research Interests: Population health, implementation science research, colorectal cancer screening uptake
Why UCSF for Fellowship: Diversity of diseases, excellent training, location in a diverse city, complemented by mentorship from genuinely amazing mentors
Hobbies: Hiking, photography, gardening, traveling

Stephanie Maldonado, MD
Stephanie Maldonado, MD

Hometown: Los Angeles, CA​​
Undergraduate: Brown University
Medical School: Brown University
Residency: UCSF
Clinical Interests: Hepatology
Research Interests: NAFLD
Why UCSF for Fellowship: Strong clinical training across three diverse sites, ample research opportunities with incredible mentorship, getting to work with the best people in a beautiful city close to family and friends​​​​
Hobbies: Traveling, exploring new places by foot, art and architecture, dancing

Diana Partida, MD
Diana Partida, MD

Hometown: Los Angeles, CA​​
Undergraduate: Pomona College
Medical School: UCLA​​​​
Residency: UCSF
Clinical Interests: General GI
Research Interests: Health disparities
Why UCSF for Fellowship: The people! It is an awesome place to train, grow, and nourish life-long learning with a health-equity lens​​​​
Hobbies: Hiking, Exploring parks in the city, trying out new restaurants and eating with friends. Fun fact: flautist in college mariachi band

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.

Lakshmipriya Subbaraj, MD
Lakshmipriya Subbaraj, MD

Hometown: Fremont, CA
Undergraduate: Massachusetts Institute of Technology
Medical School: UCSF
Residency: UCSF ​​
Clinical Interests: Liver, GI oncology research
Research Interests: Transplant outcomes, implementation science
Why UCSF for Fellowship: Robust clinical training in GI and Hepatology balanced with excellent opportunities for research, diverse patient population, supportive faculty and fellows, and located in an incredible city
Hobbies: Playing tennis, camping/hiking, hosting game nights, road tripping, watching Warriors basketball

Second-Year Fellows

Mai Dao
 Mai Dao, MD

Hometown: Ho Chi Minh city, Vietnam
Undergraduate: University of Texas at Austin
Medical School: Harvard
Residency: UCSF
Clinical Interests: Liver
Research Interests: Gut microbiome
Why UCSF for Fellowship: Strong clinical training with amazing research opportunities. Great mentorship and supportive community.
Hobbies: Spending time with my husband and sons, and exploring new restaurants.

Lisa Deng
 Lisa Deng, MD

Hometown: Chengdu, China
Undergraduate: Duke University
Medical School: UCSF
Residency: UCSF
Clinical Interests: Liver
Research Interests: Palliative hepatology
Why UCSF for Fellowship: Exceptional clinical training, strong research infrastructure, amazing mentorship.
Hobbies: Hiking, travelling, exploring new restaurants, going to the zoo with my son and husband.

Yejoo (Christina) Jeon
Yejoo (Christina) Jeon, MD

Hometown: Seoul, South Korea
Undergraduate: Cornell University
Medical School: Yale
Residency: UCLA
Clinical Interests: Liver
Research Interests: NAFLD
Why UCSF for Fellowship: Balanced emphasis on clinical training and research, opportunity to serve diverse patient populations, beautiful environment.
Hobbies: Hiking, baking new recipes, traveling to different countries.

Donna Leet
Donna Leet, MD

Hometown: Seattle, WA
Undergraduate: Amherst College
Medical School: Harvard
Residency: UCSF
Clinical Interests: General GI, IBD
Research Interests: IBD, immune-mediated diseases of the GI tract
Why UCSF for Fellowship: Unmatched clinical training and three-hospital system, amazing community and people, research environment, beautiful area.
Hobbies: Skiing, hiking, cycling, my new puppy, traveling, eating delicious Bay Area cuisine

Alejandro Lopez
Alejandro Lopez, MD, PhD

Hometown: Mayaguez, Puerto Rico
Undergraduate: University of Puerto Rico
Medical School: Cornell
Residency: UCSF
Clinical Interests: General GI
Research Interests: Gut-brain communication and how it regulates processes like visceral pain and hunger
Why UCSF for Fellowship: Strong research, amazing mentors, exceptional working environment, the best colleagues​​​.
Hobbies: Hiking, playing tennis, trying new restaurants, wine tasting.

Rena Mei
Rena Mei, MD

Hometown: Brooklyn, NY
Undergraduate: Harvard University
Medical School: Icahn School of Medicine at Mount Sinai
Residency: Columbia
Clinical Interests: Liver, General GI
Research Interests: Hepatitis, NAFLD
Why UCSF for Fellowship: Amazing clinical training in whatever field of GI that interests me, strong liver training, excellent research support, wonderful people, and trying out a new major city!
Hobbies: I'm a major foodie! I also love exploring cities, running, and soaking in the sun.

Zoe Memel
Zoe Memel, MD

Hometown: Los Angeles, California
Undergraduate: Cornell University
Medical School: Keck School of Medicine of USC
Residency: MGH
Clinical Interests: Liver, General GI, nutrition-GI
Research Interests: NAFLD, nutrition and GI, NAFLD transplant outcomes
Why UCSF for Fellowship: Diversity of patient population, disease pathology and training environment with a three-hospital system, opportunities for excellent clinical training while also gaining the network and skillset to be a robust researcher, proximity to family and the gorgeous city.
Hobbies: I love to cook, hike, watch a surprising amount of television, run with my dog Rory, host wine and whine nights, arts and crafts.

Third-Year Fellows

Nathan Alhalel
Nathan Alhalel, MD 

Hometown: Mission, TX
Undergraduate: Rice University
Medical School: Northwestern
Residency: Massachusetts General Hospital
Clinical Interests: Liver
Research Interests: NAFLD, NASH
Why UCSF for Fellowship: Diversity of sites and patient populations, excellent clinical training, and enthusiastic faculty.
Hobbies: Traveling, hiking, basketball, eating

Maria Duarte
Maria Duarte, MD 

Hometown: Miami, FL
Undergraduate: University of Florida
Medical School: Harvard Medical School
Residency: UCSF
Clinical Interests: Liver
Research Interests: NASH, disparities in liver disease, translational research
Why UCSF for Fellowship: Excellent clinical training combined with top notch research experiences, supportive mentors, and amazing peers.
Hobbies: Hiking/backpacking, reading in the park, playing with my dog, crossword puzzles

Hyun Ji
Hyun Ji, MD 

Hometown: Fairfax, VA
Undergraduate: University of Virginia
Medical School: VCU
Residency: Mayo Clinic
Clinical Interests: Liver
Research Interests: Malignancies, liver allocation
Why UCSF for Fellowship: Outstanding GI and liver clinical training, research/mentor opportunities and down-to-earth people
Hobbies: Traveling, eating, being a dog mom, being outside in above-freezing weather

Nathan Kim
Nathan Kim, MD 

Hometown: Troy, MI
Undergraduate: Harvard
Medical School: Stanford
Residency: UCLA
Clinical Interests: Hepatology
Research Interests: Transplant hepatology
Why UCSF for Fellowship: Renowned clinical training and research, supportive faculty, happy fellows
Hobbies: Lakers basketball, brain teasers, hiking

Cheikh Njie
Cheikh Njie, MD 

Hometown: Gambia
Undergraduate: San Francisco State University
Medical School: UCSF
Residency: Brigham & Women's Hospital
Clinical Interests: General GI, IBD
Research Interests: IBD and clinical drug trials
Why UCSF for Fellowship: Excellent clinical training, outstanding research opportunities and the people!
Hobbies: Utilizing points & miles for traveling

Chelsea Xu
Chelsea Xu, MD 

Hometown: Pleasanton, CA
Undergraduate: Brown University
Medical School: UCSF
Residency: UCSF
Clinical Interests: Liver
Research Interests: Transplant hepatology, women's health and liver disease, viral hepatitis
Why UCSF for Fellowship: Diversity and rigor of clinical training, supportive mentors and faculty
Hobbies: Hiking/camping, salsa dancing, watercolor, piano, trying new restaurants and recreating recipes at home

Amy Yu
Amy Yu, MD 

Hometown: Farmington Hills, MI
Undergraduate: University of Michigan
Medical School: Harvard Medical School
Residency: Massachusetts General Hospital
Clinical Interests: General GI, IBD
Research Interests: IBD
Why UCSF for Fellowship: Excellent combination of clinical training and research, diversity of sites, and incredible location
Hobbies: Trail running, biking, backpacking/camping, reading, exploring Bay Area food

Fourth-Year Fellow (Non-ACGME)

Arielle Klepper
Arielle Klepper, MD, PhD

Hometown: Pittsburgh, PA
Undergraduate: Cornell University
Medical School: Icahn School of Medicine at Mount Sinai
Residency: UCSF
Clinical Interests: Hepatology
Research Interests: Molecular mechanisms of liver disease pathogenesis
Why UCSF for Fellowship: Outstanding clinical and procedural training, mutli-disclplinary and cutting edge research opportunities
Favorite Aspects/Experiences of the program: My co-fellow family!
Hobbies: Wine tasting, eating out / amateur foodie

ACGME Transplant Hepatology Fellows

Albert Do, MD
Albert Do, MD

Hometown: Los Angeles, CA
Undergraduate: UC Berkeley
Medical School: Boston University
Residency: Yale
GI Fellowship: Yale
Clinical Interests: Hepatology, Fatty Liver Disease (NAFLD/metabolic- and alcohol-related liver disease), obesity medicine, lifestyle medicine
Research Interests: Observational research, public health, the role of metabolic health in modifying outcomes in liver disease
Why UCSF for Fellowship: World-class researchers and clinicians, a sense of mission for high-quality patient care, robust clinical care services, excellent liver transplant patient survival and outcomes
Hobbies: Avid runner, pop culture consumer, and father of three wonderful children

Randeep (Annie) Kaur, MD
Randeep (Annie) Kaur, MD

Hometown: Seattle, WA
Undergraduate: University of Washington
Medical School: American University of Antigua
Residency: Henry Ford Hospital

GI Fellowship: University of Arkansas for Medical Sciences
Clinical Interests: Hepatology 
Research Interests: Post-transplant outcomes, women’s health, NASH
Why UCSF for Fellowship: Unmatched training at a top institution. The number of living and deceased transplantations at UCSF is among the top institutions in the US, with one of the best outcomes. Outstanding mentorship. Ideal location on the west coast.
Hobbies: Spending time with my family, sight-seeing, visiting new restaurants

Nghiem Ha
Nghiem Ha, MD, MAS

Hometown: San Jose, CA
Undergraduate: San Jose State University
Medical School: University of California, Davis
Residency: University of California, San Francisco

GI Fellowship: University of California, San Francisco
Clinical Interests: Advanced/Transplant Hepatology
Research Interests: Sarcopenic visceral obesity in patients with cirrhosis
Why UCSF for Fellowship: Outstanding clinical and reserach training in a diverse environment
Favorite Aspects/Experiences of the program: The faculty and all the GI staff, and my co-fellows.
Hobbies: Exploring new places to eat with my wife and kids

Non-ACGME Advanced Endoscopy Fellow

Alexis Bayudan
Alexis Bayudan, MD

Hometown: Cooper City, FL
Undergraduate: UC Berkeley
Medical School: Florida Atlantic University
Residency: Washington University

GI Fellowship: University of California, San Francisco
Clinical Interests: Advanced, General, Motility
Research Interests: GERD
Why UCSF for Fellowship: Supportive faculty and could tell the fellows were happy, lots of research opportunities and diverse clinical experiences
Favorite Aspects/Experiences of the program: Hands down my co-fellows, couldn't do it without them.
Hobbies: Travel, golf, peloton, live concerts, and wine tasting


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