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Dr. John Marion

Dr. Marion began his work in the veterinary profession in 1986 as a veterinary assistant.  Eventually working his way through college assisting at the prestigious Oakland Equine Center.  Dr. Marion graduated from Michigan State Universitys College of Veterinary Medicine in 1997.  After graduation he practiced in Colorado for 5 years before taking over Castlewood Canyon Equine in 2002. 

In addition to his practice experience in Colorado, Dr. Marion has also been in private practices in Lexington KY, Australia and England.  Dr. Marion's practice interests include lameness and sports medicine as well as preventing disease and injury.  In addition, Dr. Marion has trained under and is now a consultant with some of the worlds leading equine dental experts.  Dr. Marion feels offering some of the most advanced dentistry in Colorado helps performance horses perform better and companion horses live longer!

In his spare time Dr. Marion enjoys riding and spending time with his son Maclain, daughter Ella and wife Elaine who is a Dressage trainer.


Dr. Tiffany Colglazier

Dr. Tiffany Colglazier grew up in Parker, CO where she enjoyed riding and competing in the Hunter/ Jumper arena.  She attended Colorado State University where she graduated with a Bachelors of Science in Environmental Health with a minor in Microbiology and ultimately a Doctor of Veterinary Medicine (DVM).  In her spare time, she enjoys riding her horse, playing with her dog and cat, gardening, hiking, and skiing with her husband, Nicholas Colglazier. 


Courtney Madsen

Courtney was born and raised in Colorado and have lived here all her life. She recieved a bachelors degree from Colorado State University. Horses have been a part of her life since she was 8 years old.  

She rode and competed Hunter Jumpers until she graduated high school.  Currently she is living in Littleton with her husband, Travis and her two boys, Colton (5 years old) and Jackson (1 1/2 years old). They also have 2 dogs, Brodie, the lab and Rumble, the mastiff. Courtney enjoys baking, yoga and running and competed in her first triathalon this summer.



Our clinic "office manager" and mascot.  Anyone who has been to our clinic has had the privilege of being greeted by Baxter.  Baxter oversees the general day to day operations of the office and is in charge of hospitality.  Baxter takes his job so seriously that we request you check your truck and trailer before leaving as you may have an accidental passenger!  


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