Dr. Viehman was born and raised in Wilmington, Delaware. He attended and graduated magna cum laude from the University of Delaware. Dr. Viehman attended medical school at Jefferson Medical College in Philadelphia, Pennsylvania and graduated number one in his class. He completed an Internship in Internal Medicine at the Hospital of the University of Pennsylvania in Philadelphia, and a dermatology residency at Duke University Medical Center, where he was chief resident. Dr. Viehman completed his fellowship in skin cancer surgery also at Duke. Dr. Viehman cofounded the Cary Skin Center in Cary, North Carolina, and worked there 1998–2008. He is now in solo private practice at SeaCoast Skin Surgery in Wilmington, NC.
Dr. Viehman has lectured nationally on dermatologic surgery and authored several published scientific research articles. He has multiple interests, including, running, Cross Fit training, missionary work for orphans in Ukraine with New Life Ministries, Everlasting Strength Ministries, and collecting rare Bibles. Dr. Viehman’s family includes his wife Ruth, two sons Brendan and Cameron, a daughter Hannah, and a border collie named Pepper.