He has provided professional research design and statistical services to medical students, residents, fellows, physicians, faculty, and staff for over 10 years. Dr. Heidel has also served as the statistician for numerous graduate students conducting dissertations and theses from a wide range of disciplines including education, psychology, nursing, engineering, epidemiology, medicine, and business (see Dr. Heidel's curriculum vitae). He started a company called Scalë, LLC in 2014 and published the world's first online decision tree for applied research and statistics called Research Engineer (see below).