In the last 29 years, Tim Sullivan has won more than fifty awards for sculpture, including prestigious Best in Show awards at the Western Art Association Show for the Clymer Museum, the Calgary Stampede Art Auction, the George Phippen Art Museum Show, and the Fred Oldfield Show.

The numerous awards he has garnered in the process has lent credence to the national reputation he enjoys. Additionally, Sullivan's work has been featured in many national and regional publications such as Art West, The Wall Street Journal, and Fly Fisherman Magazine, to name a few.

Sullivan has done commission work for Chilmark, The Washington Corporation, and The Boy Scouts of America. In addition, he has lent his art to help promote the cause of such conservation groups as Ducks Unlimited, the Rocky Mountain Elk Foundation, and Trout Unlimited.