Chim completed a plastic surgery residency at Case Western Reserve University in Cleveland and a fellowship in hand and microsurgery at the Mayo Clinic in Rochester, Minnesota. He received his medical degree from the National University of Singapore.
Chim is certified through the American Board of Plastic Surgery with a Certificate of Added Qualification in Surgery of the Hand. He is also a fellow of the American College of Surgeons. He has served as a scientific peer reviewer for the Department of Defense. He also serves on committees for the American Society for Surgery of the Hand and Plastic Surgery Research Council. He has received grant funding from the Plastic Surgery Foundation, as well as the American Society of Maxillofacial Surgeons.
Chim has published more than 90 papers in peer-reviewed journals. He is on the editorial board of the Nature journal Scientific Reports.
Chim’s clinical interests include hand and peripheral nerve surgery, brachial plexus reconstruction, lower extremity reconstruction and limb salvage, vascularized bone grafts, complex reconstruction of the trunk, head and neck and breast, surgical treatment of migraine headaches, and endoscopic hand and plastic surgery.
His research interests include tissue engineering and regenerative medicine, optimizing outcomes in peripheral nerve and brachial plexus surgery, and migraine surgery.