Mark Leibowitz, M.D. joins NRI as a Principal Investigator with approximately 25 years of research experience and previous leadership roles as Medical Director for research sites located in California and Texas. His research experience includes participation in an estimated 500 studies from Phase I-IV across a variety of indications. Additionally, he has conducted highly complex studies in healthy subjects and patient populations including continuous cerebrospinal fluid studies, First in Man, Single and Multiple Ascending Dose studies, and Ethnic bridging programs. NRI is pleased to have Dr. Leibowitz join the team as one of our key Principal Investigators across all NRI Sites.