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Howard Hassman, D.O., AOBFP

Chief Executive OfficerBoard Certified Family PractitionerChief Executive Officer, Apex Innovative Sciences
Chief Executive Officer, Principal Investigator, Hassman Research Institute
Board Certified Family Practitioner

Dr. Hassman has over 37 years of experience in clinical research. His strategic vision and commitment to the highest standard of quality has helped establish HRI as a leading clinical research organization since its founding in 2015. The growth of HRI is highlighted by the opening of the Marlton location, where Dr. Hassman currently conducts trials, in 2019.

With decades of experience as an investigator and an extensive background in psychopharmacology, pain management, and addiction medicine, Dr. Hassman provides scientific leadership and operational expertise to ensure the success of each trial. He also provides a broad range of expert consulting services to clients for early drug development, developing creative, de-risked solutions for a variety of clinical programs.

Work History

Dr. Hassman has served as an investigator in over 500 trials, including a wide range of early drug development trials from First-in-Human through Proof-of-concept. Specialized in central nervous system disorders, his diverse therapeutic expertise includes psychiatry, pain, addictions, sleep, and neurology.

Prior to HRI, Dr. Hassman was in a similar capacity at Comprehensive Clinical Research (CCR). Before that he was Chief Scientific Officer of CRI Lifetree from 1999 to 2013 when it was acquired by PRA Health Sciences. Dr. Hassman worked as an Associate Professor in the Department of Psychiatry at the University of Pennsylvania from 1984 to 1993. From 1984 to 1998, he was a General Practitioner at Family Practice Associates of San Diego while also serving as Medical Director of his research facility, Clinical Managed Care Research.

Dr. Hassman holds multiple advisory board memberships and has authored numerous articles that have been published in leading scientific journals.


Dr. Hassman is board certified in family practice. He received his medical degree from Philadelphia College of Osteopathic Medicine. His undergraduate degree is from Fairleigh Dickinson University. He completed his Fellowship at the Department of Psychiatry, University of Pennsylvania, working collaboratively with Karl Rickles, M.D., Chairman of the Department of Psychiatry and President of the Private Practice Research Group.