This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.
Get help with your application

Use all the free resources available to you from SDN: articles, guides, expert advising, forums discussions, and school research.

If he can speak to your character and why you would be a good doctor, then hell ya. I think one of the people here in an adcom said the best letter they ever got was like from a home depot manager. In a lot of ways, work LOR's can be better than academic LOR's, since you most likely know your manager better than your professors.
 
100% yes go for it. I had my coach write me a LOR and I was told in a few interviews that it was one of the strongest letters supporting my character and personality. If it doesn't cause you to surpass the school's letter limit I say add it on! Good luck!