Current Residents

Welcome to the Residency Program at the UCSF Department of Orthopaedic Surgery. Our program -- recognized as one of the leading academic orthopaedic programs in the U.S. -- is rich in history and has played a prominent role in the development of orthopaedic surgery worldwide. We invite you to watch this short video to meet our residents and learn about our program.

**Current Research Resident(s)

 *Denotes Research Resident path (taken during PGY4 year) 

PGY5 - Program Year 5 - Class of 2023

Charles Cogan, M.D.

Hometown: Naperville, IL
Undergraduate School: Northwestern University
Medical School: Northwestern University, Feinberg School of Medicine
Activities: the great outdoors, fishing, camping with my wife and dog, Northwestern Sports.

 

Michael Davies, M.D.*

Hometown: Coronado, CA
Undergraduate School: Stanford University
Medical School: University of California, San Francisco (UCSF)
Activities: blues piano, bodysurfing, running, hiking, eating California burritos

 

Leah Demetri, M.D.

Hometown: Brookline, MA
Undergraduate School: Stanford University
Medical School: Harvard Medical School
Activities: running, cycling, hiking, baking, hosting dinner parties

 

Marcus Dilallo, M.D.

Hometown: Wellington, FL
Undergraduate School: Yale University
Medical School: Duke University
Activities: running, soccer, yoga, spending time with my amazing wife and golden retriever

 

Ryan Freshman, M.D.

Hometown: Danville, CA
Undergraduate School: University of California, Los Angeles
Medical School: Northwestern University, Feinberg School of Medicine
Activities: soccer, basketball, cooking, UCLA sports, anything outdoors

 

Abhinav Janghala, M.D.

Hometown: Fremont, CA
Undergraduate School: University of California, Berkeley
Medical School: University of California, San Francisco (UCSF)
Activities: basketball, volleyball, video games, eating, family time

 

Tiffany Liu, M.D.

Hometown: Newport Beach, CA
Undergraduate School: Princeton University
Medical School: Perelman School of Medicine at the University of Pennsylvania
Activities: running, hiking, yoga, baking, eating food

PGY4 - Program Year 4 - Class of 2024

Avionna Baldwin, M.D.

Hometown: Pittsburgh, PA
Undergraduate School: Duke University
Medical School: University of Rochester School of Medicine and Dentistry
Activities: HGTV, karaoke, board/card games, traveling

 

 

Matthew Cherches, M.D.

Hometown: Houston, TX
Undergraduate School: Vanderbilt University
Medical School: Baylor College of Medicine
Activities: hunting, fishing, hiking, skiing, cycling

 

 

Steven Garcia, M.D., M.S.**

Hometown: Riverside, CA
Undergraduate School: University of California, Riverside
Graduate School: University of California, Riverside
Medical School: University of California, San Francisco (UCSF)
Activities: cooking, baking, football, basketball, exploring, trying new foods and drinks, running, hiking, camping, soaking up the sun, California, science

 

Jennifer O'Donnell, M.D. 

Hometown: Old Bridge, NJ
Undergraduate School: Dartmouth College
Medical School: Rutgers-RWJ Medical School
Activities: running, listening to podcasts, going to the beach

 

 

Sarah Stroud, M.D.

Hometown: Wake Forest, NC
Undergraduate School: Princeton University
Medical School: State University of New York, Downstate
Activities: backpacking, running, reading, yoga

 

 

Favian Su, M.D.**

Hometown: Milpitas, CA
Undergraduate School: University of California, Berkeley
Medical School: University of Pittsburgh School of Medicine
Activities: weightlifting, running, movies, Golden State Warriors Basketball

 

 

Hunter Warwick, M.D.

Hometown:Monument, CO
Undergraduate School:Brown University
Medical School:Duke University
Activities: hiking, climbing, fishing

 

 

Anthony Wiggins, M.D.

Hometown: East Longmeadow, MA
Undergraduate School: Harvard University
Medical School: University of Virginia
Activities: basketball, lifting, culinary arts, traveling, spike ball, freestyling

 

 

PGY3 - Program Year 3 - Class of 2025

Obiajulu (AJ) Agha, M.D.

Hometown: Sacramento, CA
Undergraduate School: Harvard University
Medical School: University of California, San Franciscio (UCSF)
Activities: soccer, art, keeping up to date on politics & policy

   

 

Syed Ali, M.D.*

Hometown: Shrewsbury, MA
Undergraduate School: Washington & Lee University
Medical School: University of Massachusetts
Activities: alpine, rock & ice climbing, backpacking, photography & videography, painting, aviation

   

 

Alejandro Cazzulino, M.D.

Hometown: New York, NY
Undergraduate School: Columbia University
Medical School: Perelman School of Medicine at the University of Pennsylvania
Activities: cooking, skiing, scuba diving, exploring new restaurants, eating

   

 

Sergio Flores, M.D.

Hometown: Coronado, CA
Undergraduate School: University of California, Los Angeles
Medical School: University of California, San Francisco (UCSF)
Activities: Soccer, casual running, UCLA sports fan, breweries

   

 

Alexander Markes, M.D.

Hometown: Santa Clarita, CA
Undergraduate School: Brown University
Medical School: University of California, San Francisco (UCSF)
Activities: cycling, running, podcasts, soccer, keeping up with the EPL & Champions League, finding great SF pastries

   

 

Joseph Sheridan, M.D.

Hometown: Scottsdale, AZ
Undergraduate School: University of San Diego
Medical School: University of California, San Francisco (UCSF)
Activities: basketball, fishing, golf, snowboarding, guitar

   

 

Ellen Tsay, M.D.

Hometown: Pleasanton, CA
Undergraduate School: Stanford University
Medical School: University of California, San Francisco (UCSF)
Activities: running, climbing, backpacking, yoga, Stanford Women's Tennis, hip-hop dance, making cards

   
 

PGY2 - Program Year 2 - Class of 2026

Alicia Asturias, M.D.

Hometown: Granite Bay, CA
Undergraduate School: University of California, Berkeley
Medical School: University of California, San Diego
Activities: guitar, painting, USA Gymnastics, Cal Athletics (Go Bears), banana bread and all things outdoors

AliciaAstruiasMD

 

Edgar Garcia-Lopez, M.D.

Hometown: Watsonville, CA and Michoacan Mexico
Undergraduate School: Brown University
Medical School: Brown University
Activities: ppaddleboarding and hiking with my dog Ace, surfing, scuba diving, running, grilling, cooking Mexican food, playing Catan.

 

Ryan Halvorson, M.D.*

Hometown: Coronado, CA; Arlington, VA
Undergraduate School: Harvard College
Medical School: University of California, San Francisco (UCSF)
Activities: Harvard football, basketball, coaching sports, video games, guitar, cycling faster than Chris

RyanHalvorsonMD

 

Jeffrey Kwong, M.D. M.S.

Hometown: Saratoga, CA
Undergraduate School: Stanford University
Graduate School: Stanford University
Medical School: Stanford University
Activities: cello, running, watching TV dramas, food, traveling

 

Kelechi Nwachuku, M.D.

Hometown: Los Angeles, CA
Undergraduate School: University of San Francisco
Medical School: University of California, San Francisco (UCSF)
Activities: mentorship, basketball, skateboarding, hip-hop, church, basking in my feelings from unrequited love to sad songs

 

Chris Stewart, M.D.

Hometown: San Diego, CA
Undergraduate School: University of California, Santa Barbara
Medical School: University of California, San Francisco (UCSF)
Activities: Cycling, surfing, reading, sci-fi, travel

 

Katherine Woolley, M.D.

Hometown: Denver, CO
Undergraduate School: University of Colorado Boulder
Medical School: Quinnipiac University
Activities: Climbing, snowboarding, exercise in general, cooking, superheroes, adventuring with my wife

KatherineWoolleyMD

PGY1 - Program Year 1 - Class of 2027

Kelly Bach, M.D.

Hometown: Charlotte, NC
Undergraduate School: Dartmouth College
Medical School: Perelman School of Medicine at the University of Pennsylvania
Activities: Mountain biking, cycling, hiking, climbing, park picnics, exploring new coffeeshops, slowly working through my Goodreads "Want to Read" list

Bach_Kelly_2022

 

Lisa Bonsignore-Opp, M.D.

Hometown: Castro Valley, CA
Undergraduate School: University of Chicago
Medical School: Columbia University Vagelos College of Physicians and Surgeons
Activities: cheese, plats, soccer, rock climbing and watching Marvel movies with my fiance

 

Bonsignore-Opp_Lisa_2022

 

Anoop Galivanche, M.D., M.H.S

Hometown: Saratoga, CA
Undergraduate School: University of California, Los Angeles
Graduate School: Yale School of Medicine
Medical School: Yale School of Medicine
Activities: sailing, travel, cooking, SF restaurants

Galivanche_Anoop_2022

 

Ramesh Ghanta, M.D.

Hometown: Odessa, TX
Undergraduate School: University of Texas at Dallas
Medical School: Baylor College of Medicine
Activities: Dallas Cowboys football, soccer, piano, traveling, hiking, cooking and trying new restaurants

Ghanta_Ramesh_2022

 

Natalie Kucirek, M.D.

Hometown: Piedmont, CA
Undergraduate School: University of California, Berkeley
Medical School: University of California, San Francisco (UCSF)
Activities: running/trail running, skiing, spending time with family, backpacking, eating ice cream, music

Kucirek_Natalie_2022

 

Camille Sullivan, M.D., Ph.D*

Hometown: Woodbine, GA
Undergraduate School: Massachusetts Institute of Technology (MIT)
Graduate School: University of Cincinnati College of Medicine
Medical School: University of Cincinnati College of Medicine
Activities: traveling, staying active, dance, scenic walks/hikes, being outdoors with my dog, reality TV shows

Sullivan_Camille_2022

 

Angel Xiao, M.D., M.S.E.

Hometown: Mississauga, ON (Canada) and Wayne, PA
Undergraduate School: University of Pennsylvania
Graduate School: University of Pennsylvania
Medical School: Emory University School of Medicine
Activities: tennis, snowboarding, graphic design, A24 movies, fantasy football, being a plant mom, challenging my GERD with spicy food

Xiao_Angela_2022