SEO for Dental Health Website

We are running a dental health website [login to view URL] offering all kinds of info dental problems and procedures. Presently we are fairly ranked on many keywords and drive good amount of traffic. Around 90% of traffic is from organic search thru Google, yahoo or bing. To get into next phase of growth and to rank on increasing number of keywords, we need services of SEO experts who are really able to perform a complete check on website and make a definite plan to move forward covering all aspects like back links, blogs, social networking etc so as to increase the rank of website and drive more organic traffic to website from all over world and especially from USA, Canada, UK, etc. Please send samples of works that you have done and some details work you will plan to do for www.identalhub.com. I would expect you to create real good plan containing therein the details of activities and their intended effect on the website. Before sending me the quotation please go through [login to view URL], so that you can have an idea about keywords and what to rectify in html to make it compatible for seo. Please be specific with the plan with expert and latest techniques and costing doesn't matter but result should be assured.