Mary Harrison is a Regional Medical Director for THRIVE, overseeing clinics from the southeast into the midwest. She has been THRIVING since March 2019 and is an integral member of our medical team, exemplifying a TEAM FIRST attitude!

“THRIVE is changing the industry; we truly care about our people, our leadership is dedicated and compassionate and we are making high quality vet care available to all pets.”


Name: Mary Harrison  

Title: Regional Medical Director

Region: Florida, Georgia, Indiana, Ohio, Missouri, Nebraska and Iowa

Start Date: March 2019

Veterinary School: Cambridge University, England, 1985

Fun Facts:

  • Proud mother of four 
  • Avid rower…when the weather cooperates!
  • I consider myself a constant learner. The longer I’m in the field, the less I realize I know.


I was drawn to THRIVE not to be a manager, but to be a resource to help all the young vets under my care both professionally and personally, as they navigate this uniquely challenging profession. I want to pay forward all the wisdom I have gleaned from both the successes and epic fails throughout my career and to assist veterinarians in their day to day life so they become confident, and most importantly happy and content in their chosen path. At the same time, I am learning so many things from them every single day. It is a two way street, where everyone is given the chance to grow. Beyond learning, the other reason I love THRIVE is leadership actually gets to know all their doctors and form great relationships, as we truly care! We are not just colleagues, we are family. 

When did you know you wanted to become a veterinarian? 

For as long as I can remember, I’ve always wanted to be a vet. I truly believe it is the dream of all little girls to be a vet and I was one that never changed their mind! My mother was a nurse and my father was a teacher, so I consider them both great influences in choosing my career path. The combination of the medical influence and the educator is what led me to become a veterinarian.

Come grow with us and join Mary’s team today! Explore new opportunities at THRIVE.