There are currently many doctors offices with online scheduling abilities as well as some of the nationally known clinic chains, but the opportunity for your friend would be to make it mainstream. Even though some doctors have that capability...what your friend needs to do is create a shift in paradigm where ALL doctors should have this capability. Create a need and a demand,show how it will improve the doctors bottomline profits and customer service with some hard facts and research and you may have something. Good luck. For more information on putting together your business concept, fee free to go to www.buildabusinessworkshop.com