42 Application service provider, namely, hosting, managing, developing, analyzing, and maintaining applications, software, and web sites, of others in the fields of healthcare, benefits programs, employee productivity, risk management; Providing a web site featuring technology enabling physicians to access resources in clinical medicine; Providing a web site featuring technology that enables physicians to generate, manage and exchange medical information and documents regardless of medical organization or geographic location; Providing on-line, non-downloadable, Internet-based software application for medical billing for physicians and health care institutions; Providing temporary use of on-line non-downloadable software for medical billing; Providing temporary use of on-line non-downloadable software for accessing, reading, and tracking information in the field of medical practice on a blockchain