edit copy writing for a dental website

I have a website for my dental office that is made by a large dental website company. It has several custom pages and several pages with stock content about various dental procedures which are on nearly all website made by this company. All of my research into seo suggest duplicate content sucks and original content is what does the best for SEO. I have access through a log in portal to edit nearly all the pages on the site. I have done some editing of the stock pages but I just am not good at rewriting theses pages to make them original. I am looking for some one to rewrite the stock pages with new original optimized content. I realize that a non-dental person writing content may not understand the topic so I can be available to help with understanding and final editing before it goes on the website.