Dr. Hammock graduated from the University Of Tennessee, College Of Veterinary Medicine in 1992. After completing an internship in Large Animal Surgery at Cornell, he joined a racetrack/referral surgery practice in Birmingham, Alabama. With a strong desire to pursue his interests in surgery and lameness, he completed an Equine Surgical Residency at the University of Illinois, becoming a Diplomate of the American College of Veterinary Surgeons in 2000. After a brief stint at a referral hospital in Virginia, he was invited to go to Dubai, UAE to join the Dubai Equine Hospital as staff surgeon, providing surgical expertise and healthcare for some of the best equine athletes in the world. After returning to the United States he joined, and eventually became a partner in a practice. He continued to hone his skills and abilities, providing expertise in surgery, as well as assistance in selecting potential equine athletes for some of the top owners in the racing industry. In 2009, the partnership was dissolved and Dr. Hammock returned to Tennessee. He joined a referral hospital there providing surgical and lameness expertise to clients. Being more centrally based, he continued to attend all the major Thoroughbred sales on behalf of his clients. Thoroughbred sales continue to occupy much of his busy schedule.

He has a solid reputation in the show and sport horse world, providing advice and treatment on lameness and other performance issues on horses from all disciplines including Eventers, Jumpers, Hunters, Western Pleasure, Barrel Racers, Roper, Tennessee Walking Horses, and Saddlebreds. He continues to perform surgery on a regular basis at surgery facilities located in Louisville and Thompson Station, Tennessee.

Dr. Hammock has partnered with Dr. Alberto Rullan in the Equine Performance Center. Their combined forces have allowed for the construction of a new state of the art surgical facility which completes the rehabilitation center. This partnership will provide the horse community with a valuable resource allowing for complete surgical and aftercare for equine athletes.

Dr. Hammock’s main interests include upper airway, arthroscopic, and laparoscopic surgery on equine athletes. He holds veterinary licenses in Florida, Kentucky, Maryland, New York, and Tennessee and is a member of the Royal College of Veterinary Surgeons in the UK. He is an adjunct professor at The University of Tennessee, College of Veterinary Medicine. He currently lives in Micanopy, Florida with his wife, Joanne; dogs Ava and Jag; retired racehorse Tumster; and donkeys, Harry and Jasmine.


Dr. Alberto Rullan founded Performance Equine Veterinary Services in 2009. This practice focuses mainly on treating performance-related problems in horses. Dr. Rullan’s goal is to provide an accurate diagnosis in order to provide recovery with the best available treatment for horses that are not performing to their full potential.

Dr. Rullan graduated from the University of Pennsylvania, School of Veterinary Medicine in 2006. In 2002, he received his Bachelor of Science degree from Pennsylvania State University. Dr. Rullan was assigned a one-year equine Alberto in school internship at Louisiana State University Veterinary Teaching Hospital and Clinic where he obtained advanced training in diagnostic and therapeutic techniques in equine medicine and surgery.

Dr. Rullan frequently travels to broaden his veterinary knowledge and consulting around the world. He continues his studies in equine rehabilitation, lameness diagnostics and treatment methods, and the use of stem cells and regenerative therapy in equine injury treatment and recovery. He is also active in volunteering with the Equitarian Initiative, a non-profit international organization that is dedicated to providing veterinary care to horses in less fortunate, communities and teaching basic veterinary care to the people in these communities.



Director of Administration

I was born and raised in the Florida Keys and traded my flip flops in for a pair of boots after graduating from the University of Central Florida. My family was introduced to Dr. Rullan and Willie 11 years ago when we were in a pinch visiting family in the Ocala area and needed an equine vet – and by God’s grace the Rullan Brothers came to our rescue!

At that time I never could have imagined the impact the Rullan’s would have in my life. Years later my mom got a new horse to run barrels on and shortly after getting him, it was discovered he had DDFT damage and our vet in South Florida suggested taking him back up to Performance Equine! So of course, we took him to Dr Rullan’s for his opinion and after his exam, he was ready to commit 110% to helping Mr P and that’s exactly what he did. Within 8-9 months, Mr. P was able to start working again, and within a year, he was back up and running. Through seeing how Performance Equine handled P’s journey, especially handling my mother (the horse is the easy part 🤣) but keeping my mom informed and at ease while being far away, I developed great appreciation and respect for the Rullan brothers and the clinic!

Fast forward quite a few years, I move to Ocala at a crossroad in my life. I was going through the motions in a career I was not passionate and excited about, so with some courage and a supportive fiancé, I quit the job and began searching. Around this time, my mom decided to sell Mr P and needed to do an ultrasound recheck before the sale. She thankfully hadn’t needed Dr. Rullan’s services for some time and on her way out the door I mentioned, “Hey see if Dr. Rullan needs any office help, I’m sure he doesn’t but doesn’t hurt to throw it out there.” Needless to say I was glad I had the gut feeling of mentioning something because I have now been here for 6 months and truly love what I get to do and help deliver the same caliber of service to our clients and patients that was delivered to my mom!


My name is Yolanda Matas. I was born in Spain. I came to USA in the year 2000. I have belonged to the EPIC family since Jan. 2019.

My husband, a thoroughbred horse trainer, introduced me to the horse world 30 years ago and, since then, I just love to be around them. This is one of the reasons I like to work here…and the other one is the great team I have the opportunity to work with, especially, Dr. Rullan.


Analine Rivera

My name is Analine Rivera, I am 20 years old and have been with the company on and off for the past four years. I started working as a groom and a few months after I had a bad motor vehicle accident and fractured my neck. After healing up, the day I got cleared was the day I came back and was offered the technician position. I have been on that journey ever since. I absolutely love my job and one of my favorite parts is getting horses in for long-term rehab and seeing them progress and return successfully to their jobs. I have been around horses just about my whole life and in my free time I enjoy training, and barrel racing on my horses.


I was born and raised on the island of Puerto Rico. I studied at the University of Puerto Rico and graduated as a Veterinary Technician. At 18 years old, I traveled to Ocala, Florida, the city known as “The Horse Capital of the World” to meet & do an internship with the veterinary clinic Performance Equine Veterinary Services (PEVS).

As an educational/mentoring center & top voted equine clinic, I began my career here and never looked back…for the past 15 years! I am honored to share my experience with horses in this beautiful country and am proud to have been given the opportunity to develop even further in the environment of horses.

Janice currently practices as a Veterinary Technician and is dedicated to managing of the Radiographs Department at PEVS, helping others to learn and fulfill their dreams. In addition, she is part of the EPIC: Equine Performance Innovative Center team; our on-site, world renowned rehabilitation & conditioning center as well as surgery suite assisting Dr. Phil Hammock.



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Business Administration