Gastrointestinal & Hepatobiliary Pathology Fellowship

The Department of Pathology offers a one-year fellowship in Clinical Gastrointestinal & Hepatobiliary (Selective Pathology) that is ACGME accredited. The Department of Pathology offers one-year fellowships in Gastrointestinal & Hepatobiliary Pathology. The fellowship provides a primary role in diagnosis of adult and pediatric gastrointestinal, liver, pancreas and biliary tract disease. The consultation service receives nearly 2000 outside consultations (60-70% medical and neoplastic liver, 30-40% tubular GI and pancreas). The fellow also coordinates the consultations for challenging cases from in-house gastrointestinal and hepatobiliary as well as the liver transplant services. UCSF has a large pediatric/adult IBD program, and is a renowned liver transplant center, providing rich diagnostic material in these areas. The fellows participate in multidisciplinary clinical conferences, including liver transplant, hepatology/gastroenterology conferences, pediatric gastroenterology conference, as well as other ad hoc conferences pertinent to the hepatobiliary GI cases. There are numerous research opportunities and the service extensively uses cutting edge immunohistochemistry, molecular techniques and sequencing assays. The fellows work at Moffitt and Mission Bay Hospitals; elective experience in endoscopy, molecular pathology and other subspecialties of surgical pathology is available.

Additional years of post-doctoral level training may be available for qualified candidates with an interest in basic research in hepatobiliary & gastrointestinal disease. Candidates who are interested in general surgical pathology fellowship, in addition to GI and hepatobiliary pathology subspecialty training, may be offered a two year combined clinical training experience (see surgical pathology fellowship webpage for details), which may allow for a limited independent sign out experience during the second year.

UCSF Gastrointestinal & Hepatobiliary Pathology Group


Gastrointestinal & Hepatobiliary Pathology Group

Back row (left to right): Dana Balitzer, Kester Haye, Aras Mattis, Nancy Joseph, Sanjay Kakar, Ryan Gill.

Front row (left to right): Raga Ramachandran, Soo-Jin Cho, Sarah Umetsu, Kwen Wun, Linda Ferrell, Grace Kim.

Faculty Involved with Fellowship

Soo-Jin Cho, MD, PhD
Won-Tak Choi, MD, PhD
Linda Ferrell, MD
Ryan M. Gill, MD, PhD
Nancy M. Joseph, MD, PhD
Sanjay Kakar, MD
Grace E. Kim, MD
Aras N. Mattis, MD, PhD
Rageshree Ramachandran, MD, PhD
Sarah E. Umetsu, MD, PhD
Kwun Wah Wen, MD, PhD


To qualify, candidates must have completed 2 years anatomic pathology minimum (3 years preferred), or Board eligibility/certification in AP/CP.
Non-U.S. citizens must possess a Permanent Resident Card or an appropriate educational visa prior to starting a postgraduate medical education program. The Department of Pathology may sponsor J1 visas.

If selected, candidates must obtain an unrestricted medical license or a Postgraduate Training License (PTL) from the Medical Board of California before their start date.

Medical Board of California


Fellows will be appointed as a PGY-5.

UCSF GME Trainee Financial Resources


We are participating in the national unified recruitment timeline for pathology fellowship programs for the 2024-2025 fellowship year starting on May 1, 2022.

We accept the CAP Residents Forum Standardized fellowship application and require a curriculum vitae, personal statement of interest, three letters of recommendation including a letter from your program director in PDF format. Please also include a photo of yourself in jpeg, gif, or PDF format when submitting your application. We will accept applications for the 2024-2025 academic year now. Applications are to be submitted in entirety by July 31st, 2022.

Please fill out the application below and submit along with the requested documents listed above and send to the Fellowship Program Administrator Suria Sadat.

We recommend downloading the application using the link below and opening using Adobe Acrobat software for the best user experience to complete your application and avoid issues with the fillable PDF.

Selected applicants will be offered interviews beginning August 15, 2022. Offers will be made beginning October 1, 2022.


Applications for the 2024-2025 academic year must be submitted in entirety by July 31st, 2022.

The program does not discriminate with regard to race, color, national origin, religion, sex, gender, gender expression, gender identity, gender transition status, pregnancy, physical or mental disability, medical condition (cancer-related or genetic characteristics), genetic information (including family medical history), ancestry, marital status, age, sexual orientation, citizenship, or service in the uniformed services, including protected veterans.

Current & Future Fellows

Raymond Yip, MD, MSc
Ruth Zhang, MD

Naoki Akanuma, MD, PhD
Alex Kikuchi, MD, PhD

Dorukhan Bahceci, MD
Eric Nguyen, MD, PhD

Past Fellows


Fellowship Years

Fellowship Activity

Post Graduate or Current Position

Annoel P. Yabes, MD


HCC Variants Independent Contractor
Lawrence Walden Browne, MD, PhD


Resident Education; FS diagnosis of fatty change for donors; Interobserver study pre and post training on how to grade fat that showed improvement Staff Pathologist, Kaiser Permanente, Oakland, CA
Hubert H. Fenton, MD


Hemochromatosis and liver transplant risks Staff Pathologist, Pathology Associates, Greenville, SC
Kimberley Evason, MD, PhD


PFIC2 morphology correlation with genetic and immunohistochemical findings Staff Pathologist, Department of Pathology, University of Utah/Huntsman Cancer Institute
Maggie M. Lam, MD


HFE mutations in alpha-1 antitrypsin deficiency Staff Pathologist, Alta Bates Summit Medical Center Oakland, California
Rageshree Ramachandran, MD, PhD


Resident education: immunohistochemistry for diagnosis of HCC Associate Professor in Pathology, University of California San Francisco
Ryan M. Gill, MD, PhD


Centrizonal arterialization in NASH correlates with higher stage fibrosis Professor and Director of Surgical Pathology, University of California, San Francisco
Aras Mattis, MD, PhD


Vascular liver tumor variants Assistant Professor in Pathology, University of California, San Francisco
Andrea Pingitore, MD


Recurrent hepatitis C and steatosis in transplant patients; Neonatal, perinatal obstructive live disease Genomic Health
Amanda Doherty, MD


Resident Education; HIV, solid organ transplant, and recurrent HCV Staff Pathologist, Kaiser Medical Center, Santa Clara, CA
Gregor Krings, MD, PhD


Immunohistologic distinction between cholangiocarcinoma and benign ductular lesions Assistant Professor of Pathology, University of California San Francisco
Soo-Jin Cho, MD, PhD


Vascular malformations; FNH-like lesions in the liver Assistant Professor in Pathology, University of California San Francisco
Daniel Phillips, MD


Immunohistochemical stains in the diagnosis of poorly differentiated HCC Staff Pathologist, Sierra Pathology Associates, Clovis, CA
Thuy B. Nguyen, MD


Immunohistochemistry of primary liver tumors Staff Pathologist, Mills Peninsula Health Services, South San Francisco, CA
Samip Patel, MD


Well differentiated hepatocellular tumors  and combined HCC/cholangiocarcinoma Staff Pathologist, Atlanta VA Medical Center, Atlanta, Georgia

Mojgan Hosseini, MD


Segmental cholangiectasia and recurrent pyogenic cholangitis; ductular reaction mimicking cholangiocarcinoma; pediatric cholestatic liver disorders Assistant Professor in Pathology, University of California San Diego

Menaku Raju, MD


Carcinosarcoma of the esophagus Staff Pathologist, Kaiser Medical Center, San Jose, CA
Gillian Hale (Genrich), MD


Beta-catenin mutations in hepatocellular adenoma; glutamine synthetase immunohistochemistry in liver tumors Faculty Pathologist, University of Utah, Salt lake City, UT
Sarah Umestu, MD, PhD


Grading and staging of appendiceal mucinous neoplasms; GNAQ mutations in anastomosing hemangioma Assistant Professor in Pathology, University of California San Francisco
Carolyn Sangokoya, MD, PhD


Hepatic iron homeostasis; MiR-485-3p and MiR-122 in liver development and disease Research Fellow in Pathology, University of California San Francisco
Won-Tak Choi, MD PhD


Flow cytometric analysis of dysplasia in Barrett esophagus; Small vs large droplet macrovesicular steatosis in liver transplant biopsies; gastric pyloric gland adenoma Associate Professor in Pathology, University of California San Francisco
Rocky Adams, MD


Genetics of hepatocellular adenoma Staff Pathologist, Saint George, UT
Christos Tsokos, MD, PhD


TERT promoter mutations in combined hepatocellular-cholangiocarcinoma Postdoctoral research fellow, Mass General Hospital, Boston, MA
Zhen Yan, MD


Staging system for fibrolamellar carcinoma; immunohistochemical pitfalls in hepatic angiomyolipoma Staff Pathologist, Diagnostic Pathology Medical group, Vallejo, CA
Su-Yang Liu, MD, PhD


Tumor deposits in colorectal cancer; whole slide imaging for primary diagnosis of GI biopsies Postdoctoral research fellow, UCSF
Kwun Wah Wen, MD, PhD


Immature B-cells in adult and pediatric liver biopsies; genomics of appendiceal goblet carcinoid Assistant Professor in Pathology, University of California San Francisco
Daniel Roberts, MD


Pathologic features predicting recurrence of HCC after transplant Staff pathologist, Cleveland Clinic, OH
Kester Haye, MD, PhD 2018-2019 Characterization of colonic adenocarcinomas with neuroendocrine features Faculty, Dept. of Pathology, Univ of Pennsylvania, Philadelphia,  PA
Dana Balitzer, MD 2018-2019 - Genomic features of cholangiolocellular carcinoma
- Novel markers for distinguishing benign vs. malignant biliary proliferations
Staff Pathologist, VA Medical Center, San Francisco, CA
Daffolyn Rachael Fels Elliott, MD 2019-2020 Parenchymal rejection in allograft livers Lung pathology fellow, Ann Arbor, MI
Christopher Bowman, MD, PhD 2019-2020 Nanostring RNA analysis in subtypes of hepatocellular adenoma Postdoctoral Research Fellow, UCSF