About Us

True North Equine Veterinary Services
Devoted to improving the health and well-being of equine patients, from backyard companions to elite athletes of all disciplines, using integrative medicine.

True North Equine is a collaborative effort between Dr. Hancock and Dr. Tim Rogers.  We offer the best methods of conventional and complementary medicine to enhance performance, improve quality of life, and foster the horse-rider bond. We strive to go beyond a strictly business relationship by welcoming owners and their horses into our practice family. We operate with utmost integrity and open-mindedness, and clients can trust that in our practice, the well-being of the horse always comes first.

Ann-Marie Hancock, DVM, EDO

Ann-Marie Hancock was raised in the San Francisco Bay Area of Northern California, where she was active in Pony Club and competed in lower level three day eventing horse trials. Ann-Marie completed her studies at Colorado State University in Fort Collins, Colorado, graduating with a BS in Equine Science, an MS in Anatomy and Neurobiology and a Doctorate of Veterinary Medicine (DVM) in 2003.


She spent her first 10 years as a veterinarian in general equine practice in Eastern North Carolina.  She built up her skills on emergencies, dentistry, performance horse and lameness work, reproduction, preventative medcine and integrative health.  She trained with the International Veterinary Acupuncture Society in Acupuncture, and completed her EDO training and certification with the Vluggen Institute to become an equine osteopath.  


She continues to train in different integrative modalities, as well as training to improve her veterinary diagnostic and performance horse skills.  


Dr. Hancock moved her family to Virginia and purchased Rectortown Equine Clinic in 2013 and after several successful years decided to embark on a new endeavor.  She relocated the practice to Warrenton, Virginia and changed the practice name to True North Equine Veterinary Services. The practice has a special interest and skill set in Equine Osteopathy and integrative medicine, but also serves in other general practice roles, like preventative care, dentistry, emergencies, lameness and podiatry to name a few.   


Dr. Hancock’s goal is to develop long term, positive relationships with horses and their owners to help create successful partnerships that can last a lifetime.  


True North Equine is a hub for a team of practitioners supporting equines in any life stage or discipline, providing an authentic and collaborative work environment for dentists, farriers, saddle fitters, massage therapists and other horse health care professionals.   

Tim Rogers, DVM

Tim's love for horses started when he was a kid and learned how to ride English during summer camps. His family had a Thoroughbred named 'Sunny' but he had a penchant for jumping fences on his own to visit his buddies at the University of Tennessee Equestrian Center, so Tim spent more time feeding carrots than actually riding his sisters' horse. He has enjoyed many things in life including horse packing in the Rocky Mountains, becoming a Pilates instructor and Rolfer and many adventures Cycling.

He attended Colorado State University's College of Veterinary Medicine where he tracked large animal and pestered his teachers with lots of questions about horses and physical therapy. Tim then later finished training at the Vluggen Institute for Equine Osteopathy. Tim graduated with Masters in Acupuncture and Oriental Medicine from Southern California University of Health Sciences. As well as completing Animal Chiropractic training for veterinarians at Parker College of Chiropractic. He has always had a strong interest in physical therapy and volunteered in human sports medicine clinics and even served as the dissection teaching assistant for several years at Colorado College of Chiropractic. Additionally he is a twice- graduate of Mission Farrier School. 


Tim's veterinary interests are especially involved with physiotherapy, equine osteopathy and podiatry. He continues to study deeply in the field of human rehabilitation so he can bring this state-of-the-art knowledge into the equine world. His passion is in combining these interests to help our equine companions find freedom from pain as well as a greater ease in movement and life.


Callie Heinle, Osteopathy Apprentice and Massage Therapist

Callie Heinle was born and raised in Ramona, California, where she acquired her love of horses at a young age due in part to her mother’s role as the in-house trainer at North Arabians. She grew up riding hunter/jumpers for much of her childhood, then transitioned to reining horses in her teen years. As an adult, Callie strives to further her horsemanship and knowledge of horses by studying under some of the top horsemen in the industry. She has had the opportunity to intern with Trevor Carter on his ranch in New Mexico, participating in colt starting and the schooling of reined cow horses and working ranch horses. She enjoys continuing to develop her own horses in English and Western disciplines.


In 2016, Callie attended equine massage school in Ocala, Florida at Animal Dynamics for Massage and Electro-Acupressure. She is a certified equine massage and electro-acupressure therapist. Later finding Prancing Pony Body-work and meeting Dr. Hancock. She has been studying Osteopathy and apprenticing with Dr. Hancock since 2018 and is now taking appointments of her own with True North Equine for Osteopathy. 

Callie’s other interests include: hiking, camping with friends and family, and traveling. She is an avid reader who enjoys collecting various horse and history books.

Carin Brown, Veterinary Assistant and Certified Equine Thermographer

Carin is a life long Equine Enthusiast who has always had a passion for helping animals and riding horses. She has been teaching riding lessons since she since 2007, and riding before she could walk. As an H-B Pony Club Graduate she has ridden in a variety sports from Games to Eventing through her riding career. In 2008 Carin represented the United States on the International Games team that competed in Australia. Since then she has coached riders in games and general riding lessons. In recent years she has also become very involved in the Eventing community and was a working student for Skyeler Voss at the wonderful Morningside Training farm in the Plains VA. She has also worked as a working student for Cathy Fredrickson and Sharon Miller. Throughout College she rode with the Equestrian Team and competed in Hunter/Jumpers and ANRC competitions. Carin is currently competing in Eventing (Preliminary) and Dressage (3rd level).


She graduated from Bridgewater College in May of 2014 with a BS in Health and Exercise Science and a Minor in Equine Science. Following graduation Carin completed her training in Equine Thermography.  In November of 2014 she became a Certified Infrared Thermographer and started her own business, so she could pursue her passion for helping horses. 

Laurie Eller, Office Manager

Laurie was born and raised in Arizona where she grew up showing Quarter Horses in both Western and English.  She became an accomplished team roper and was the Arizona Women’s Professional Rodeo Association Barrel Racing Rookie of the Year.  Before finishing college, Laurie was crowned Miss Rodeo Arizona and runner up to Miss Rodeo America.  While attending Colorado State University, Laurie worked at the CSU Stallion Lab and rode young cutting horse prospects for Tee Cross Ranches in Pueblo, CO.

After graduating from Colorado State with her bachelor’s degree in Animal Science, Laurie was the Communications/Marketing Director for the Colorado Cattle Feeders Association, Executive Vice President of the American National CattleWomen’s Association, and after marrying and moving to the northern Virginia area, became the Executive Director of the Animal Industry Foundation.

Laurie took time away from her professional life to raise and homeschool their two daughters while teaching them ride and show hunter ponies at local and A-rated shows.

Stephanie Carter, Functional Nutritionist

 Formally educated in the realm of human functional medicine, Stephanie brings to animal nutrition a fresh and unique perspective.  Using a species appropriate, nutrient dense, whole foods approach, she has successfully supported equine and companion animals suffering from ulcers, Cushing’s, Lyme disease, Insulin Resistance, laminitis, EPM, squamous cell carcinoma, poor hoof and coat quality, diabetes, arthritis, hypothyroidism, allergies, fatigue, and various other ailments.  

     Beyond her functional nutrition experience, Stephanie has worked in the Veterinary Medical field for over a decade. Her equestrienne career began as a child, being developed by former Olympic medalist and coach, Major Robert Borg and his proteges.  She taught and trained in the hunters, jumpers, and dressage under the name Storybrooke Farms for many years in Raleigh, North Carolina before moving to Northern Virginia to fulfill her dream of opening an equine rehabilitation facility. 


    Stephanie’s passion is helping our beloved fur friends achieve optimal health.  Her purpose is to transform lives. One animal, one bucket or food bowl at a time.  Through this process, if she can inspire others to do the same, then together we will create a movement to change the world and all the lives of those living in it.

20 A John Marshall St, Warrenton, VA 20186
Phone: 540.364.9111  Fax: 540.364.9211 
office@truenorthequinevet.com | 9am-5pm Mon-Fri
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