Medical Net, Inc., formerly Medical Net Communications, Inc. is a Japan-based company primarily engaged in the portal site operation business. The Portal Site Operation segment operates dentistry related Websites including Orthodontic Dentistry Net, Esthetic Dentistry Net, Dentist Net and others; beauty and esthetic related Websites including Esthetic Related Websites, Men's Cosmetic Surgery Related Websites, Esthetic School Related Websites and others, as well as other Websites including Photosensitized Electron Transfer (PET) Examination Net, Hair Loss and Hair Thinning Related Websites and others. The Search Engine Marketing (SEM) segment offers search engine optimization (SEO) and listing advertisement services. The Others segment produces and maintains homepages for businessmen, and operates sales agency business. The Company is also involved in the management and operation of game app for iPhone, and community app for child rearing mothers.