Hassman Research Institute, LLC 175 Cross Keys Road, Berlin NJ 08009 MAP

Click here to download site fact sheet

14 multi-specialty private practices on campus with physicians that serve as sub-investigators. Specialties include psychiatry, addictions, abuse liability, neurology, cardiology, dermatology, ophthalmology, endocrinology, ENT, gastroenterology, orthopedics, pain management, and OBGYN


  1. Outpatient Addiction and CNS
  2. Inpatient HAL Unit, Inpatient Medical Unit and Local Lab
  3. Outpatient General Medicine

HRI’s newly-expanded, 30-bed inpatient facility is part of a campus blending a multi-specialty group practice with a dedicated clinical research team offering safety resources required for the unique needs of abuse liability studies. The Human Abuse Liability (HAL) unit includes: private or semi-private rooms, separate nursing station, dedicated rating rooms, and neurocognitive exam room. The HAL unit is centrally located offering access to large population centers of patients, healthy subjects and 12 colleges; has a large database of recreational drug users (marijuana, cocaine, heroin, opioids, benzos, methamphetamine, nicotine, alcohol, PCP); lounge areas with computers, game room, eating areas; and secured outdoor areas.

Click here to download HAL unit fact sheet


Howard Hassman, DO, CSO, Board Certified in Family Practice. PI on phase I-IV inpatient and outpatient psychiatry, pain, and addiction trials

Michael Hassman, DO, Board Certified in Family Practice. PI on phase I-IV inpatient and outpatient general medical trials

Roberta Ball, DO, Board Certified in Psychiatry. PI on phase I-IV inpatient and outpatient psychiatry trials

Elissa Hassman, DO, Board Certified Ophthalmologist with 17+ years of treatment experience