Mark’s law practice and his teaching at Yale focus on health care law and finance, human and animal research, stem cell and genetic research, research grants and contracts, research misconduct, and international research. Mark formerly served at Harvard as the Senior Associate Provost and University Senior Research Officer and started and directed Harvard’s HIV/AIDS treatment programs in Nigeria, Tanzania and Botswana. He serves on the Ethics Working Group of the NIH’s HIV Prevention Trials Network (HPTN). Mark has held senior appointed positions in the New York City and State departments of health. In 2019, he was named the “Legal Innovator of the Year” by the Financial Times.