Tommy Mackenzie, one of the four Mackenzie brothers, switched from Dr. Brick Breeland to Dr. Zoe Hart after he and his four brothers got into a bar fight and Zoe stitched them up.

However, Brick approached Tommy's wife, Olive Mackenzie, who apparently "had never heard that her husband switched over to the pretty lady doctor in the short shorts" and soon after, Tommy (as well as his three brothers, including Logan) was switched back to Dr. Breeland's care (The Pirate & The Practice).