Our People

Learn more about the leading physician at each of our clinical trial sites.

Northwestern Medicine | Dr. Gregory Dumanian


Dr. Dumanian graduated summa cum laude from Harvard College. After graduating with honors from the University of Chicago Pritzker School of Medicine, he completed a five-year residency in general surgery at the Massachusetts General Hospital. He followed this with three years of plastic surgery training at the University of Pittsburgh, one of the premier plastic surgery programs in the country. He then completed a fellowship in hand surgery at the Curtis Hand Center in Baltimore, Maryland.

Dr. Dumanian is board certified in plastic surgery, general surgery and hand surgery, and he is Professor and Chief of the Division of Plastic Surgery at Northwestern University.

Georgetown University School of Medicine | Dr. John Richard Barbour


Dr. Barbour graduated with distinction from the University of Virginia and completed his medical school training at the Georgetown University School of Medicine in 2002.

Following his plastic surgery training, he received additional fellowship training in microsurgical reconstruction, complex peripheral nerve reconstruction and subspecialty training in hand surgery at the prestigious Barnes-Jewish Hospital/Washington University in Saint Louis.

He currently holds appointments as an Assistant Professor of both Plastic Surgery and Neurosurgery at the MedStar Georgetown University Hospital. His current position is Medical Director of the Peripheral Nerve Surgery Institute.

The Ohio State University Wexner Medical Center | Dr. Ian Valerio


A decorated military officer and accomplished surgeon, Dr. Valerio is an Associate Professor of Clinical Plastic Surgery and Chief of the Division of Burn, Wound, and Trauma at the OSU Department of Plastic Surgery. Board-certified in plastic surgery, Dr. Valerio’s research and specialty interests include advanced regenerative medicine applications to the wounded warrior and in trauma care, peripheral nerve repair/restoration techniques, microsurgery, and other reconstruction strategies.

Dr. Valerio, an Ohio native, has held other academic positions at Johns Hopkins University School of Medicine, Baltimore, MD, the University of Pittsburgh School of Medicine, and the Uniformed Services University of the Health Sciences in Bethesda, MD.

Rehabilitation Institute of Chicago | Dr. Todd A. Kuiken


Dr. Kuiken received a B.S. degree in biomedical engineering from Duke University (1983), a Ph.D. in biomedical engineering from Northwestern University (1989) and his M.D. from Northwestern University Medical School (1990). He is an internationally respected leader in the care of people with limb loss: both as an active treating physician and as a research scientist.

Dr. Kuiken currently is the Director of the Center for Bionic Medicine in the Rehabilitation Institute of Chicago.  He is a Professor in the Depts. of PM&R, Biomedical Engineering and Surgery of Northwestern University. 

San Antonio Military Medical Center | Dr. Mickey Cho


Dr. Mickey Cho earned his undergraduate degree from the United States Military Academy, West Point, NY in 1995. In 1999, Dr. Cho earned his medical degree from the Uniformed Services University of the Health Sciences in Bethesda, MD.

Dr. Cho is a Fellow of the American Academy of Orthopedic Surgeons with a Certificate of Added Qualification in Hand Surgery. He is also an active member of the Society of Military Orthopedic Surgeons, the Orthopedic Trauma Association, and the American Society for Surgery of the Hand. Dr. Cho is a member of the Military Relations Committee of the American Society for Surgery of the Hand (ASSH) and was selected to the 2015 ASSH Young Leaders program. Currently, he is one of three attending hand surgeons at the San Antonio Military Medical Center.

Vanderbilt University Medical Center | Dr. Reuben Bueno


Dr. Bueno received his Bachelor of Arts degree from Yale University and received his Medical Doctorate from Vanderbilt University School of Medicine. His clinical interests include adult and pediatric reconstructive plastic surgery, adult and pediatric hand surgery, peripheral nerve surgery, targeted muscle reinnervation, and burn surgery. 

Dr. Bueno served as the 2013-14 President of the Midwestern Association of Plastic Surgeons. He was selected as a Young Leader in Hand Surgery by the American Society for Surgery of the Hand in 2011 and was selected as Chair of the Young Microsurgeons Group for the American Society for Reconstructive Microsurgery in 2013.

His positions at Vanderbilt include Chief of Pediatric Plastic Surgery at the Monroe Carell, Jr. Children’s Hospital and Plastic Surgery Residency Program Director.

Walter Reed National Military Medical Center | Dr. Benjamin Potter


Dr. Potter graduated with honors from the United States Military Academy at West Point in 1997 and the University of Chicago, Pritzker School of Medicine Alpha Omega Alpha in 2001. Additionally, he has deployed as an Orthopedic Surgeon in support of Operation Enduring Freedom to Camp Dwyer, Afghanistan, in the heart of the Helmand Province.

He currently serves as the Vice Chair of Orthopedics and the Chief Orthopedic Surgeon for Amputee Care at Walter Reed National Military Medical Center, and the Vice Chair (Research) and Associate Professor of Surgery at the Uniformed Services University.