Database development CRM

Need a web based application developed to manage incoming patient leads from web form and to manage current clients. Would be a standard CRM application. The developer should know GIS enabled version of MySql. Would need to know how to do Google map mash-ups and spatial queries. Would like to use Toad for development of front end. Also, C# or VB Ajax or Silverlight would be an asset. Please see files and in bid please add url to other similar projects or explain other web based applications that used google map mash-ups.