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Internal Medicine Residency IM Residency

PSTP People

The PSTP currently consists of a mix of interns, residents, and fellows of all different levels and subspecialties. The current subspecialty matrix crosses the areas of hematology-oncology, gastroenterology, endocrinology, rheumatology, infectious diseases, and pulmonary critical care medicine.

In past years graduates of the PSTP have, by and large, pursued academic medical careers in a variety of areas, including the National Institutes of Health (NIH).

Current Residents, Fellows, & Alumni


2026

  • Benjamin Haslund-Gourley

    Benjamin Haslund-Gourley

    Internal Medicine Intern

    Hometown: Santa Barbara, CA
    Education: UC Santa Barbara BA, Drexel University College of Medicine MD, PhD
    Clinical and research interests: Medical Hematology and Oncology with research focused on cancer immunotherapy, diagnostics, glycobiology, and novel cancer therapeutics 
    Honors and Awards: HHS LymeX Innovation Challenge Winner, Lupus Foundation of America Grant, Neil Spector Humanity Award, Translational Research Award: Awarded by the Immune Modulation and Engineering Symposium, patented novel diagnostic assay platform for Lyme disease

  • Michelle Tran

    Michelle Tran

    Internal Medicine Intern

    Hometown: Manhattan Beach, CA
    Education: Rice University BA, Icahn School of Medicine at Mount Sinai MD, PhD
    Clinical and research interests: Medical oncology, translational cancer immunology
    Personal interests: Tennis, running, skiing, pottery, and trying new matcha cafes
    Honors and Awards: NIH/NCI Ruth L. Kirschstein F30 National Research Service Award; Gold Humanism Honor Society Inductee; Society for Immunotherapy of Cancer (SITC) Young Investigator Award; American Association of Immunologists (AAI) Trainee Abstract Award; Mount Sinai Advancement of Women in Science Award; Mount Sinai Social Justice Award; L'Oréal Paris Women of Worth Honoree, CNN Heroes Salute

2025

  • Evan Ales

    Evan Ales

    Internal Medicine Intern

    Hometown: New Orleans, LA
    Education: University of South Florida BS, Florida International University Herbert Wertheim College of Medicine MD, PhD
    Clinical and research interests: Glycobiology, cellular trafficking particularly E-selectin receptor/ligand interactions, dendritic cell immunobiology and immunotherapies.
    Personal interests: Music performance, including classical, electric, and bass guitar, and piano. Weightlifting and running. Cooking, particularly ice cream making and mixology.
    Honors and Awards: Inaugural MD/PhD student and Wertheim Scholar at FIU HWCOM

  • Elizabeth Bird

    Elizabeth Bird

    Internal Medicine Intern

    Hometown: Colorado Springs, CO and Anchorage, AK 
    Education: UC San Diego, BS, UC San Diego School of Medicine, MD, PhD
    Clinical and research interests: Pulmonary and Critical Care Medicine physician scientist, with clinical interests in treating patients with structural lung disease and pulmonary vascular disease and  research focuses on using localized spatial information, lung mechanics, and patient data to improve phenotyping, prognostication, and treatment planning for patients with pulmonary disease and critical illness.
    Personal interests: Circus arts, dance and acrobatics, cooking and fermenting.
    Honors and Awards: NIH NHLBI Ruth L. Kirschstein NRSA Individual Fellowship (F30) 2022, PVRI 2022 Annual Meeting Travel Award 2022, NASA Space Technology Research Fellowship 2018, Summa Cum Laude graduate in Bioengineering 2015, Chancellor’s Award Scholar Athlete 2015.

  • Samuel Williams

    Samuel Williams

    Internal Medicine Intern

    Hometown: 
    Education: Washington University, St. Louis BA, ockefeller University PhD, Weill Cornell MD
    Clinical and research interests: Internal medicine, particularly in underserved populations. Translational Medicine, with a focus on applying bench science to clinical practice. Understanding host-pathogen interactions, risk factors, and developing clinical trials for infectious diseases. Studying the microbiome's role in skin infections (e.g., HS) and investigating IL-17-related signaling pathways. Elucidating the mechanisms of gram-negative anaerobic bacteria (e.g., Fusobacterium, Prevotella, Porphyromonas) in disease.
    Personal interests: Improv comedy, music. Taken improv classes and performed. Plays sax and guitar. Is in a NOLA-style brass band.
    Honors and Awards: 

 2024

  • Armon Azizi

    Armon Azizi

    Internal Medicine Resident

    Hometown: Los Gatos, CA
    Education: UC San Diego BS, UC Irvine MD
    Clinical and research interests: Oncology, tumor immunology, computational approaches for oncologic drug target discovery
    Personal interests: Hiking, cooking, and surfing
    Honors and Awards: American Society of Hematology (ASH) HONORS award, ASH Abstract Achievement Award, UC Irvine School of Medicine Meyskens Family Medical Research Award, UC Irvine Clinical Professionalism Award, UC Irvine Granville and Sidney Kirkup Fellowship in Medicine

  • Annie Cowan

    Annie Cowan

    Internal Medicine Resident

    Hometown: Brunswick, Maine
    Education: Middlebury College BA, Mayo Clinic Alix School of Medicine MD
    Clinical and research interests:  Hematologic malignancies, translational computational biology
    Personal interests: Spicy food, soccer, and snuggling with my pets!

  • Renato Guerrieri

    Renato Guerrieri

    Internal Medicine Resident

    Hometown: Barrington, Rhode Island
    Education: Anderson UTHealth Houston Medical Scientist Training Program MD
    Clinical and research interests: Brain Metastasis, Tumor Immunology, Medical Oncology
    Personal interests: Indoor Cycling, Hiking, Sailing, Advocacy, LGBTQ+, and my dog Bae
    Honors and Awards: CCTS TL1 Pre-Doctoral Fellowship

  • Michael Nash

    Michael Nash

    Internal Medicine Resident

    Hometown: Del Mar, CA
    Education: UC Santa Cruz BS, University of Colorado MD, PhD
    Clinical and research interests: Gastroenterology & Hepatology, The role of innate immunity, hematopoietic stem cell function and diet in driving early development of MASLD and other digestive diseases, immune-gut interactions, novel measures of gut function and digestive disease symptomatology
    Personal interests: Weight training, running, hiking, guitar, biking, gardening, fly fishing, bird watching, herpetology, studying the biology of chameleons to support long-term conservation and species survival, forest conservation locally and in Madagascar, veterinary medicine
    Honors and Awards: UCSC Undergraduate Research Award, Highest Honors in the Biochemistry & Molecular Biology Major UCSC, University of Colorado MSTP T32 Training Grant Recipient, Kern Lipid Conference Early Career Investigator Travel Award (2018, 2019), NIH-USDA Young Investigator Travel Award, NIH-NIDDK, Ruth L. Kirschstein National Research Service Award (F30 grant), Best Poster Award (2019, 2020, 2021, 2022) University of Colorado, Scholarship recipient Keystone Symposia: Obesity, Scholarship recipient Keystone Symposia: Metabolic Decision Making, Scholarship recipient, Keystone Symposia: Inter organ crosstalk in NASH, Nutrition Obesity Research Center Outstanding Graduate Student Award.

 2023

  • Connor Beebout, MD, PhD

    Connor Beebout, MD, PhD

    Internal Medicine Resident

    Hometown: Redding, CA
    Education: UC Davis BA, BS, Vanderbilt University, MD, PhD
    Clinical and research interests: Infectious Diseases, bacterial pathogenesis, metabolism, host-pathogen interactions
    Personal interests: Running, hiking, going to the beach with my wife and son
    Honors and Awards: Graduate Student of the Year Award (Vanderbilt Institute for Infection, Immunology, and Inflammation); Sidney P Colowick Outstanding Graduate Student Award (Vanderbilt Microbe-Host Interactions Graduate Program); NRSA F30 (NIAID)

  • Travis Nielsen, MD, PhD, MPH

    Travis Nielsen, MD, PhD, MPH

    Internal Medicine Resident

    Hometown: Moreno Valley, CA
    Education: UC Riverside BA, University of Southern California PhD, Loyola University Chicago MD
    Clinical and research interests: Iinfectious Diseases, nontraditional therapeutics for infections caused by antimicrobial-resistant pathogens
    Personal interests: Dollar-bill origami, classic cars, fossils & geodes
    Honors and Awards: The Order of Arêté (University of Southern California), Outstanding Abstract (American Society for Microbiology), Albert Schweitzer Fellowship (Chicago Chapter)

  • Dan Youmans, MD, PhD

    Dan Youmans, MD, PhD

    Internal Medicine Resident

    Hometown: San Diego, CA
    Education: UC Berkeley BS, University of Colorado Anschutz Medical Campus, MD, University of Colorado Boulder, PhD
    Clinical and research interests: Pulmonary and Critical Care Medicine, lung developmental biology
    Personal interests: Surfing, spending time at the beach and in the ocean with my spouse and our baby, and Padres games at Petco Park
    Honors and Awards: AOA, University of Colorado student clinical professionalism award

 2021

  • Harrison Penrose, MD, PhD

    Harrison Penrose, MD, PhD

    Gastroenterology Fellow

    Hometown: Auburn, CA
    Education: UCSD BS, MS, Tulane Univ SOM MD,PhD, UCSD 
    Clinical and research interests: Gut Inflammation, Metabolism, Obesity, IBD, Colon Cancer, Drug Discovery
    Personal interests: Surfing

  • Eric Roth, MD, PhD

    Eric Roth, MD, PhD

     

    Hematology/Oncology Fellow

     Hometown: Carmel, IN
    Education: Indiana University BS, Biotechnology; Stony Brook Universit MD PhD
    Clinical and research interests: Solid tumor oncology, tumor microenvironment, metastatic processes, and translational drug development
    Personal interests: Bicycling, snorkeling, struggling to surf

  • Amara Seng, MD. PhD

    Amara Seng, MD. PhD

    Rheumatology, Allergy, & Immunology Fellow

    Education: University of Kansas MD PhD
    Current Institution: Cedars Sinai

2020

  • Morgan Birabaharan, MD

    Morgan Birabaharan, MD

    Infectious Diseases Fellow

     Hometown: Reading, PA
    Education: Lehigh University BS. Pharmaceutical Chemistry, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell MD
    Clinical and research interests: Discovery and development of microbiota-derived therapeutics against infectious diseases
    Personal interests: NBA, weightlifting, Sri Lankan cuisine
    Honors and Awards: 2022 UCSD Excellence in Teaching Award, 2023 UCSD Excellence in Teaching Award

  • Brian Ji, MD, PhD

    Brian Ji, MD, PhD

    Hematology / Oncology Fellow

    Hometown: Madison, WI
    Education: UW-Madison BS, Columbia University MD/PhD
    Clinical and research interests: Solid tumor oncology, and applying computational approaches to better understand tumor cell biology and physiology
    Personal interests: Playing basketball and soccer, trying to keep up with my 10 month old!
    Honors and Awards: Goldwater scholarship, AOA, Columbia Janeway Prize

2018

  • Paul Hsu, MD, PhD

    Paul Hsu, MD, PhD

    Staff Physician and Postdoctoral Fellow

    Hometown: Diamond Bar, CA
    Education: MD, PhD, Pennsylvania State University School of Medicine
    Clinical and research interests: Interactions between intestinal CD8 T cells and inflammatory joint and skin disease
    Personal interests: Tabletop games, 3D printing, trying to bowl
    Honors and Awards:  2023 Federation of Clinical Immunology Societies FOCIS Center of Excellence Travel Award

Alumni

2019

Michael  Doud, MD, PhD

MD/PhD: University of Washington
Current Position: Assistant Professor at UC San Diego, Division of Infectious Diseases

2018

Sharon Choi, MD, PhD

MD/PhD: 
Current Position: Assistant Professor at UC San Diego, Division of Hematology/Oncology

Cynthia Hsu

MD/PhD: UC San Diego, BS: University of Washington
Current Position: Assistant Professor at UC San Diego, Division of Gastroenterology

2017

Sydney Ramirez, MD, PhD

MD/PhD: CSU Sacramento, BS (summa cum laude); UTMB, MD, PhD
Current Position: Associate Physician and Postdoctoral Fellow in the Division of Infectious Diseases at UC San Diego, and Instructor at La Jolla Institue for Immunology

Shiruyeh Schokrpur, MD, PhD

MD/PhD: BA, UC Berkeley; MD, PhD: UCLA
Current Position: Assistant Professor at UC Davis, Division of Hematology/Oncology

2016

Benjamin Goldenson, MD, PhD

MD/PhD: Northwestern University
Current Position: Hoag Health System, Hematology/Oncology

Kentson Lam, MD, PhD

MD/PhD: UC San Diego
Current Position:  Associate Physician, UC San Diego, Division of Regenerative Medicine

2015

Calvin Hang, MD, PhD

MD/PhD: UC San Diego
Email: cahang@health.ucsd.edu
Fellowship: Cardiology
Current Position: Kaiser Permanente

Thomas Martin, MD, MS

MD: University of Oxford
Email: thm001@health.ucsd.edu
Fellowship: Infectious Diseases
Current Position: Assistant Professor, UC San Diego

Thomas Prohaska, MD

MD: Medical University of Vienna
Email: tprohaska@health.ucsd.edu
Fellowship: Cardiology
Current Position: Associate Professor, US San Diego 

Stephen Rawlings, MD, PhD

MD/PhD: New York University School of Medicine
Fellowship: Infectious Diseases
Current Position: Maine Medical Center, Infectious Diseases Physician

2014

Sarah Burgdorf, MD, PhD

MD/PhD: UC San Diego
Fellowship: Infectious Diseases
Current Position: Assistant Professor, University of Pittsburgh

Michael Lam, MD, PhD

MD/PhD: UC San Diego
Email: mtlam@health.ucsd.edu 
Fellowship: Pulmonary and Critical Care Medicine
Current Position: Assistant Professor, UC San Diego

Darius Schneider, MD, PhD (Endocrinology; Transferred to UW in 2019)

Matthew Tsai, MD, PhD

MD/PhD: University of Miami
Email: matsai@health.ucsd.edu 
Fellowship: Gastroenterology
Current Position: Assistant Professor, UC San Diego

2013

Sudeb Dalai, MD, PhD (Infectious Diseases; Transferred to Stanford)

Adam Greenbaum, MD, PhD (Hematology-Oncology; Transferred to UW)

2012

Calvin Yeang, MD, PhD

MD/PhD: State University of New York Downstate Medical Center College of Medicine
Email: cyeang@health.ucsd.edu
Fellowship: Cardiology
Current Position: Assistant Professor, UC San Diego

Kay Yeung, MD, PhD

MD/PhD: New York University School of Medicine
Email: k7yeung@health.ucsd.edu
Fellowship: Hematology/Oncology
Current Position: Assistant Clinical Professor , UC San Diego

2011

Edwin Yau, MD, PhD

MD/PhD: State University of New York, Buffalo
Fellowship: Hematology/Oncology
Current Position: Faculty, Roswell Park Comprehensive Cancer Center, Buffalo, NY

Adam Burgoyne, MD, PhD

MD/PhD: Case Western Reserve University School of Medicine
Email: aburgoyne@health.ucsd.edu
Fellowship: Hematology/Oncology
Current Position: Associate Professor, UC San Diego

2010

Jennifer Dan, MD, PhD

MD/PhD: Boston University
Email: jdan@health.ucsd.edu
Fellowship: Infectious Diseases
Current Position: Assistant Professor, UC San Diego

Aaron Miller, MD, PhD

MD/PhD: Northwestern University Feinburg School of Medicine
Email: ammiller@health.ucsd.edu
Fellowship: Hematology/Oncology
Current Position: Associate Professor, UC San Diego

2009

Lawrence Ang, MD

MD: UC San Diego
Email: lang@health.ucsd.edu
Fellowship: Cardiology
Current Position: Associate Professor, UC San Diego

Aaron Carlin, MD, PhD

MD/PhD: UC San Diego
Email: acarlin@health.ucsd.edu
Fellowship: Infectious Diseases
Current Position: Associate Professor, UC San Diego

Christopher Larson, MD, PhD

MD/PhD: University of Texas, Southwestern Medical School
Fellowship: Hematology/Oncology
Current Position: EpicentRx, La Jolla, CA (& Adjunct Faculty, UC San Diego)

2008

Brigid Boland, MD

MD: UCSF School of Medicine
Email: bboland@health.ucsd.edu
Fellowship: Gastroenterology
Current Position: Associate Professor, UC San Diego

Mary Lewinski, MD, PhD

MD/PhD: UC San Diego
Email: mlewinski@health.ucsd.edu
Fellowship: Infectious Diseases
Current Position: Associate Professor, UC San Diego

Anna Narezkina, MD, PhD

MD/PhD: Smolensk Sate Medical Academy, Russia
Email: anarezkina@health.ucsd.edu
Fellowship: Cardiology
Current Position: Associate Professor, UC San Diego

John Paul (JP) Shen, MD

MD/PhD: Washington University, St. Louis
Fellowship: Hematology/Oncology
Current Position: Faculty, University of Texas MD Anderson Cancer Center

Amir Zarrinpar, MD, PhD

MD/PhD: UC San Diego
Fellowship: Gastroenterology and Hepatology, Obesity Medicine
Current Position: Associate Professor, UC San Diego