The first republican to announce his candidacy for president in 2016?

Mr. Ben Carson.  He worked as Director of Pediatric Neurosurgeon for nearly 40 years at Johns Hopkins, along with being professor of neurosurgery, oncology, plastic surgery, and pediatrics.

Carson made waves across the internet when his 2013 National Prayer Breakfast speech went viral (below) in which he criticized President Obama's policies, receiving praise from Fox News commentators, eventually appearing on Hannity.