Dr. Dion Manhoff is a pathologist practicing in Phillipsburg, NJ. Dr. Manhoff is a doctor who specializes in the study of bodily fluids and tissues. As a pathologist, Dr. Manhoff can help your primary care doctor make a diagnosis about your medical condition. Dr. Manhoff may perform a tissue biopsy to determine if a patient has cancer, practice genetic testing, and complete a number of laboratory examinations. Pathologists can also perform autopsies which can determine a persons cause of death and gain information about genetic progression of a disease.