Medical Net, Inc. engages in the search engine marketing (SEM), portal site management, and homepage maintenance businesses. It operates through the following segments: Media Platform, Medical Institution Management Support, Medical B to B, and Others. The Media Platform segment operates a portal site for dental, beauty, and child support fields. The Medical Institution Management Support segment provides search engine marketing (SEM) services and web site creation. The Medical B to B segment operates a portal site that connects dental care workers and dental-related companies. The Others segment includes management consignment business. The company was founded by Akira Hayakawa and Ryusuke Hayakawa on April 2000 and is headquartered in Tokyo, Japan.