Hi, I'm Dr. Tiffany Sill

Doctor of Veterinary Medicine
Founder and Owner

Dr. Tiffany Sill has been the owner and principal veterinarian of Unleashed since its inception in 2010. She was raised in Tulsa, OK and then attended the University of Oklahoma for her undergraduate studies where she earned her bachelor’s degree in Zoology. She has been in small animal clinical practice since graduating from Veterinary school at Oklahoma State University in 2006. Previous clinical opportunities at local small animal practices prepared Dr. Tiffany to create a company that changes the way veterinary medicine is experienced by her clients and patients.

Dr. Tiffany spends her spare time with wife, Whitney and their two daughters, cat Roger, and four busy doodles.

Hi, I'm Dr. Seth Hiddink

Doctor of Veterinary Medicine

Dr. Seth Hiddink is a graduate of Oklahoma State College of Veterinary Medicine. Dr. Hiddink joins the Unleashed Team after several years in emergency medicine and has a passion for building relationships with pets and their families.

Dr. Hiddink is happily married to his better half, Dr. Summer Hiddink, who is also a small animal veterinarian in the Oklahoma City Area. They met at the University of Central Oklahoma during their undergraduate studies, where he was a member of the UCO Broncho Football Team as the field goal kicker. Following graduation from Oklahoma State CVM, they have settled down in the Edmond, OK area with their son Kaiden, German Shepherd Koda, Giant Schnauzer Zeke, and horse, Tater. Tater “Gentleman Jack” has retired from the Morgan Horseshow world as a therapy horse with Willow Ranch Equine Assisted Counseling.

Dr. Hiddink loves spending time with family, trying new restaurants, landscaping, traveling, and going to the gym.

Hi, I'm Dr. Katherine Buchanan

Doctor of Veterinary Medicine

Dr. Katherine Buchanan teamed up with Dr. Tiffany in 2023. Born and raised in OKC and a graduate of Casady School. She then went on to Oklahoma State and completed an undergraduate in Animal Science and a Masters in International Agriculture. She spent 6 years as a veterinary assistant before heading back to OSU for veterinary school where she graduated in May 2023.

Dr Buchanan returned to OKC to practice medicine with her family, Dakota and son Emory.

Hi, I'm Dr. Lindsay Eisenhour

Doctor of Veterinary Medicine

Dr. Eisenhour grew up in Oklahoma & started doing prerequisite courses for vet school while earning her degree as a registered veterinary technician. She worked 14 years in small animal emergency both as a RVT and since graduating OSU Vet Med in 2018. She has assisted and overseen the intensive care unit and emergency intake the last several years before finally making the switch to general practice. She has been with her husband for nearly 18 years and they have a beautiful five year old daughter named Allison. She love movies, listening to, writing and playing music on her acoustic guitar and the only thing she loves more than helping pets is spending time with her family!
She also recently had an award winning short documentary called “I’m the Vet” released on streaming services and would love for anyone and everyone to check it out and see how dedicated and passionate we are in this profession.