Dr. Chan held two academic appointments as adjunct professor at the University of Maryland for 4 years and as associate professor at the University of Minnesota for 12 years. He is a visiting professor at Shenyang Pharmaceutical University at Shenyang, China and at National Defense Medical Center at Taipei, Taiwan.
Dr. Chan is an active member of American Pharmaceutical Association (APhA), American Association of Pharmaceutical Scientists (AAPS), and Controlled Release Society. He served in the Pharmacokinetics, Pharmacodynamics and Drug Metabolism program planning committee (1988-1992) and became Program Chairman in 1991 for the Eastern Regional AAPS meeting. He was elected Member-At-Large for Academy of Pharmaceutical Research and Sciences section of APhA in 1990-92. He was elected President for American Chinese Pharmaceutical Association (ACPA) and serving his term in 1993-4. Over the past 6 years, he had organized and served as program chairperson for many national and international symposiums. He is currently member of the Executive committee, Scientific advisor to the president, and member of the International Committee for ACPA providing scientific support to Southeast Asian countries. He is also the scientific advisor to National Laboratory of Foods and Drugs, Department of Health in Taipei, Taiwan. He is a member of the Strategy Review Board, Science & Technology Advisory Group of Executive Yuan, Taiwan. He chairs a US/Taiwan Joint Committee of Pharmaceutical Affairs to upgrading the Pharmaceutical Industry in Taiwan.