Dr. Tsai is the first well-trained dermatologic surgeon in Taiwan. He completed his dermatologic surgery training in United State and Japan in 1992-3. He set up section of dermatologic surgery in Chang-Gung Memorial Hospital, which was the largest medical center in Asia with more than 5,000 beds. He established the Skin Laser Center in Taipei Municipal Wan-Fan Hospital in 1998. Now, He is  associate professor of Dermatology in Taipei Medical University. He also serves as associate editor of JCD, assistant editor of Dermatologica Sinica, and editor of Dermatologic Surgery. He is a board director of the Taiwanese Dermatologic Association.