C.R.S. § 12-240-136

(1) Nothing in this article 240 shall be construed to invalidate or affect the license of any person holding a valid, unrevoked, and unsuspended license to practice medicine in this state on July 1, 1951, except as otherwise provided by this article 240. (2) Nothing in this article 240 shall be construed to invalidate the license of any person holding a valid, unrevoked, and unsuspended license on June 30, 1979, to practice medicine in this state or to affect any disciplinary proceeding or appeal pending on June 30, 1979, or any appointment to the board, the inquiry panel, or the hearings panel made on or before June 30, 1979.