Orthopaedic Surgery

Our Residents

Get to Know the Orthopaedic Surgery Residency Program

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GME | Why Choose the David Geffen School of Medicine?

PGY-5 Residents

Seth Ahlquist, MD

Hometown: Loomis, CA

Undergrad Institution: University of California, Los Angeles

Medical School: David Geffen School of Medicine at UCLA

Clinical Interests: Upper Extremity

Hobbies/ Interests: Soccer, Tennis, UCLA football/basketball, board games, spending time with my wife and twin boys

Eric Chang, MD

Hometown: Los Angeles, CA

Undergrad Institution: University of California, Berkeley

Medical School: Tulane University School of Medicine

Clinical Interests: Hand Surgery

Hobbies/ Interests: Working out, trying new recipes, traveling

Christopher Gajewski, MD

Hometown: Chagrin Falls, OH

Undergrad Institution: University of Pennsylvania

Medical School: University of Pennsylvania

Clinical Interests: Hand & Upper Extremity

Hobbies/ Personal Interests: Cooking, playing tennis, exploring the LA restaurant scene, perfecting the perfect negroni

Brendan Shi, MD

Hometown: Charlotte, NC

Undergrad Institution: Yale University

Medical School: Johns Hopkins University

Clinical Interests: Periarticular trauma, Shoulder arthroplasty

Hobbies/ Interests: Basketball, cycling, music

Rishi Trikha, MD

Hometown: Laguna Niguel, CA

Undergrad Institution: University of California, San Diego

Medical School: Icahn School of Medicine at Mount Sinai

Clinical Interests: Sports Medicine, Periprosthetic Infection Prevention, Inclusive Excellence

Hobbies/ Interests: Soccer, Basketball, Food

Alexander Upfill Brown, MD

Hometown: Houston, TX

Undergrad Institution: Stanford University

Medical School: UCLA David Geffen School of Medicine

Clinical Interests: Spine, Trauma, Oncology, Device design, Clinical research

Hobbies/ Interests: Golf, running, snowboarding, the outdoors, eating and making better pizza, LA restaurants

PGY-4 Residents

Daniel Chiou, MD

Hometown: Los Angeles, CA

Undergrad Institution: Brown University

Medical School: Brown Medical School

Clinical Interests: trauma and shoulder/elbow

Hobbies/ Interests: guitar

Varun Gudapati, MD

Hometown: Saratoga

Undergrad Institution: Duke University

Medical School: University of California, Los Angeles

Clinical Interests: I enjoy all orthopedics

Hobbies/ Interests: Skiing, drawing, reading, engineering, biking

Jennifer Kallini, MD

Hometown: Manhattan Beach, CA

Undergrad Institution: Stanford University

Medical School: Harvard Medical School

Clinical Interests: Upper extremity, trauma, elbow arthroplasty, education, clinical informatics.

Hobbies/ Interests: Piano, beaches, hiking, consumer technology.

Ryan Ouillette, MD

Hometown: Murrieta, CA

Undergrad Institution: Harvard University

Medical School: University of California, San Diego

Clinical Interests: Arthroplasty, trauma, pediatrics. That feeling when the reduction keys in just right.

Hobbies/ Interests: Surfing, travel, beach volleyball

Troy Sekimura, MD

Hometown: Kailua, HI

Undergrad Institution: University of Southern California

Medical School: University of California, Los Angeles

Clinical Interests: Arthroplasty, Trauma

Hobbies/ Interests: Tennis, spikeball, snowboarding (poorly)

Lisa Su, MD

Hometown: Grapevine, Texas

Undergrad Institution: Stanford University

Medical School: University of California, Los Angeles

Clinical Interests: Adult reconstruction, upper extremity, implant and device design

Hobbies/ Interests: Snowboarding, beach-bumming, flag football, music

PGY-3 Residents

Jordan Holler, MD

Hometown: Louisville, Colorado

Undergrad Institution: University of Illinois at Urbana Champaign (UIUC)

Medical School: University of California San Francisco (UCSF)

Clinical Interests: Trauma, Arthroplasty, Sports, Global Orthopedics, Statistical Modeling

Hobbies/ Personal Interests: Fermentation, hot-sauce crafting, coffee bean roasting, hiking, gardening, spending time with family

Nicole Newman-Hung, MD

Hometown: Los Angeles, CA

Undergrad Institution: Princeton Unive4rsity

Medical School: University of California, San Francisco

Clinical Interests: Upper Extremity/Hand, Sports, Arthroplasty, Oncology

Hobbies/ Interests: Eating, cooking, and trying new restaurants with my wife and family, traveling, tennis, basketball, spoiling my dog

Atousa Nourmahnad, MD

Hometown: Villanova, PA

Undergrad Institution: Swarthmore College

Medical School: Harvard Medical School

Clinical Interests: Hand

Hobbies/ Personal Interests: HIIT, pilates, alt rock, Sunday mornings on the couch

Jeannie Park, MD

Hometown: Pleasanton, CA

Undergrad Institution: Cornell University

Medical School: University of California, Davis

Clinical Interests: Trauma, joints, spine, oncology

Hobbies/ Personal Interests: Hiking , baking, skiing, finding the best breakfast burrito in LA

Paul Walker, MD

Hometown: Riverside, CA

Undergrad Institution: University of California, Irvine

Medical School: Weill Cornell Medical College

Clinical Interests: Sports, Upper extremity, Pediatrics, Arthroplasty, Inclusive Excellence

Hobbies/ Interests: good eats, traveling, snowboarding, watching Kobe highlights

Brian Zukotynski, MD

Hometown: Manhattan Beach, CA

Undergrad Institution: University of Southern California

Medical School: University of Southern California, Los Angeles

Clinical Interests: Implant design, clinical informatics, sports, trauma, shoulder/elbow, surgical education.

Hobbies/ Interests: Piano, beaches, hiking, consumer technology

PGY-3 Research Residents

Thomas Olson, MD

Hometown: Batavia, IL & Colorado Springs, CO

Undergrad Institution: Denison University

Medical School: David Geffen School of Medicine at UCLA

Clinical Interest: Spine, Trauma, Oncology

Hobbies/ Personal Interests: Lifting, escape rooms, skiing, & Netflix

Mathangi Sridharan, MD

Hometown: Strongsville, OH

Undergrad Institution: The Wharton School of the University of Pennsylvania

Medical School: The Ohio State University College of Medicine

Clinical Interests: Shoulder/elbow, sports, joints, cost effectiveness and clinical outcomes research

Hobbies/ Personal Interests: Peloton, boxing, reading, beach-going

PGY-2 Residents

Christopher Hamad, MD

Hometown: Houston, Texas

Undergrad Institution: University of California, Los Angeles

Medical School: The University of Texas Health Science Center at Houston, McGovern Medical School

Clinical Interests: Orthopaedic Oncology and Implant Associated Infection

Hobbies/ Interests: Spending time with family and friends, taekwondo, weight lifting, road biking, traveling, anything outdoors, trying new restaurants, grilling/smoking/dry aging meats

Kellyn Hori, MD

Hometown: San Francisco, CA

Undergrad Institution: University of California, Los Angeles

Medical School: David Geffen School of Medicine at UCLA

Clinical Interests: Sports, Pediatrics, Oncology, Trauma, Arthroplasty

Hobbies/ Interests: Volleyball, golf, baking, houseplants

Lauren Hsue, MD

Hometown: Mercer Island, WA

Undergrad Institution: Stanford University

Medical School: Oregon Health & Science University

Clinical Interests: Sports, Arthroplasty, Trauma, Pediatrics, Oncology

Hobbies/ Interests: Hosting dinner parties, Peloton, social dance, indie folk music

Tim Liu, MD

Hometown: Fairfield, CA

Undergrad School: University of California, San Diego

Medical School: University of California, Los Angeles

Clinical Interests: Sports, Pediatrics, Oncology, Trauma, Arthroplasty

Hobbies/ Interests: Fishing, cycling, camping, hiking

Shannon Wu, MD

Hometown: Arcadia, CA

Undergrad: Stanford University

Medical School: David Geffen School of Medicine at UCLA

Clinical Interests: Sports, Pediatrics, Oncology, Trauma, Arthroplasty

Hobbies/ Interests: Drawing, painting, surfing, yoga, cooking

Jonathan Yu, MD

Hometown: Seattle, Washington

Undergrad Institution: Yale University

Medical School: Weill Cornell Medical College

Clinical Interests: Adult Reconstruction, Sports, Health Economics, Health Equity

Hobbies/ Interests: Basketball, Cooking, Guitar, Reading, Tennis, Eating

PGY-1 Residents

Amy Blackburn, MD

Hometown: Livingston, NJ

Undergrad Institution: Northwestern University

Medical School: Brown Medical School

Chinonyelum "Nonye" Ikeanyi, MD

Hometown: Rancho Cucamonga, CA

Undergrad Institution: MIT

Medical School: CDU/UCLA DGSOM

Clinical Interests: Peds/Trauma/Sports, Public Policy/MedTech

Hobbies/ Interests: Film/TV, Travel, Mixology, & Volleyball

Brandon Gettleman, MD

Hometown: Thousand Oaks, California

Undergrad Institution: Chapman University

Medical School: University of South Carolina Columbia

Clinical Interests: Orthopaedic Oncology and Joints

Hobbies/ Interests: Playing golf, working out, going to any sporting events, barbequing, traveling, and binge-watching netflix with my wife and dogs

Carlos Maturana, MD

Hometown: New York City

Undergrad Institution: Columbia University

Medical School: UCLA/Drew

Clinical Interests: Spine, Hand, Shoulder Elbow, Trauma, Biomechanics and Clinical Research

Hobbies/ Interests: Spend time with my wife and kids, also recreational flying if I get some free time!

Nicole Truong, MD

Hometown: Yorba Linda, CA

Undergrad Institution: University of California, Los Angeles

Medical School: University of California, San Francisco

Clinical Interests: Hand and Upper Extremity, Sports

Hobbies/ Interests: snowboarding, watching sports, traveling, spending time with family and friends, hanging out with my dog

Mark "Mitch" Herbert, MD

Hometown: Eugene, OR

Undergrad Institution: Montana State University

Medical School: Columbia University Vagelos College of Physicians & Surgeons

Clinical Interests: Sports, shoulder/elbow

Hobbies/Interests: Golf, basketball, traveling, watching movies, spending time with family and friends