Surgery Interest Group

Uniformed Services University

Surgery Interest Group

Welcome to the homepage of the Surgery Interest Group (SIG) at the Uniformed Services University School of Medicine. SIG is an active group that conducts a wide variety of activities throughout the year including a regular lunchtime lecture series, surgical skills labs, shadowing, service opportunities, and more.  Explore our website for details or “like” us on Facebook.

For general information, contact SIG President ENS Dylan Griffiths or the SIG Faculty Advisor, Dr. David Welling.


To view upcoming events, take a look at the SIG calendarSIG Students After Lecture


For information about membership and getting involved in SIG activities, please contact 2LT Charles Llewellyn.


Contact 2d Lt Shari Hafner for information on SIG volunteering within the local community.


SIG Students Serve Food

Students from USU serve food at Christ House

Shadowing Opportunities

Shadowing Opportunities are emailed out regularly to SIG members.  Dr. Welling regularly takes groups of students to the OR at WRNMMC to give students the chance to see surgery first hand.  Other opportunities include the possibility of shadowing in the wound clinic, or with a transplant team.  Contact ENS Erica Curtis with questions.

Surgical Skills Lab

Are you ready to learn surgical techniques used in the OR? Learn from Dr. Welling and other USU faculty and develop skills crucial for your future medical career.  Students may begin with basic knot 

tying and suturing, and progress to techniques such as cricothyrotomy and simulated endoscopy.  Contact 2LT Aaron Montgomery.

SIG Students Two Hand Tying

Dr. W teaches the proper two-hand knot tying method


SIG Students Two Hand Tying

Learning knot tying from Dr. Hutton

SIG Officers


ENS Dylan Griffiths, USN


2LT Oriana Ellis, USA


2LT Charles Llewellyn, USA

Surgical Skills Coordinator

2LT Aaron Montgomery, USA 

Lecture Coordinator

ENS Brett Monson, USN

Service Coordinators

2d Lt’s Courtney Beaver and Shari Hafner, USAF

Shadowing Coordinator

ENS Erica Curtis, USN

Faculty Advisor(s)

Dr. David Welling, Col, USAF (ret.), FACS