Complex sentence: Dr. Gold is the 2015 John P. McGovern Award Recipient in honor of his contributions to public policy, treatment, research, or prevention which has increased our understanding of the relationship of addiction and society.
Split into simpler sentences: Dr. Gold is the 2015 John P. McGovern Award Recipient in honor of his contributions to public policy, treatment, research, and addiction prevention. He has increased our understanding of the relationship between addiction and society.