The company specializes in conducting inpatient and outpatient Phase I-V research trials, with a focus on populations including the elderly, patients facing addiction, and patients with psychiatric, neurological, and medical disorders. They have a team of trained and experienced staff, including four board-certified clinical investigators, who are dedicated to maintaining the standard of quality results in the trials they conduct. HRI has developed a database of over 70,000 subjects with the help of referrals from the five multi-specialty practices. They provide clinical research services to pharmaceutical and biotechnology sponsors, conducting Phase I-IV clinical trials for new medications and treatments in various therapeutic areas such as dermatology, neurology, pain, addiction, and psychiatric indications.