Methods and systems are disclosed for enabling a healthcare virtual private network (VPN) that leverages the assets of a shared, interconnected network of legacy systems. A data connection is established with a rule-based application dataserver of a telecommunications network facility to control access, sharing, notification, security, and/or management of electronic healthcare communications and/or data exchanged between or among a non-participant and a legacy system of a participant. Typically, the rule-based application dataserver is associated with a central office ("CO"), a mobile telephone switching center ("MTSO"), or a combination CO/MTSO. Methods and systems related to healthcare VPN billing are also disclosed.