Fostered interest in human health & technological developments has increasingly paved way to (WBAN) Wireless body area network. With broader capabilities it focuses is to play a vital role for the improvement of human health. In this research paper, we propose to Conceptualize & optimize medical data using PSO in virtual doctor server (VDS) in existing WBAN architecture. Existing architecture of WBAN consists of: wireless sensor, wireless actuator node, wireless central unit, a virtual doctor server (VDS) and wireless Personal Device (PD). Personal Digital Assistant (PDA) or smart phone can be used as PD. Based on the existing architecture mentioned above VDS will keep the historical data about the patient, optimize the data using PSO, generate advices, inform to take rescue action and can provide first aid assistance instructions on patient or any of his close relative's PDA's. VDS can further be used to improve security & develop potential solutions for secure network for WBAN system.