Patrick is the son of Dr. Dennis and Dianne McCullough and grew up working in and around the clinic. In 2007, Patrick graduated from George Mason University with a Bachelors of Science in Network Engineering. For over a decade, he worked as a Systems Engineer for various companies in the DC-Metro/Northern Virginia area.

In 2018, he and Dr. Dawson purchased the Waynesboro Veterinary Clinic where he now works as the Practice Manager. In 2019, Patrick co-founded an HVAC and Refrigeration business with his good friend Jesse Burcker (www.BurckerHVAC.com).

When not working, Patrick loves spending time with his wife, children, and family.