Logo and letterhead design

I require the design of a logo/branding for a brand new healthcare concept which is soon to start up. I am looking for creativity and imagination in the design to incorporate the business model which is currently unique and which represents the energy and modern ethos of my idea. I want the outcome of this project to achieve a striking logo / brand identifier, letterhead/stationery design-match system etc. I have been working on this exciting idea for 5 years now and currently commissioning webdesign and other components essential to start up.