Summerfields Animal Hospital - Fort Worth, Tx - Meet Our Team

Summerfields Animal Hospital

4536 North Tarrant Parkway
Fort Worth, TX 76244


Meet Our Doctors

Through ongoing education our veterinary team assures the most progressive and scientifically sound medical and surgical procedures as well as providing optimal, compassionate care and comfort for your pet.  



Karen J. Metzler, D.V.M.

Karen J. Metzler, D.V.M.

Dr. Metzler was fortunate to grow up in a home filled with a wide variety of family pets including hamsters, birds, cats, dogs and horses. She has always loved animals, so it was only natural for her to choose veterinary medicine as her career path. She graduated from Texas A&M’s, College of Veterinary Medicine in 1997. She has experience in emergency medicine as wells as general practice. She has specific interests in surgery, dentistry, internal medicine, exotics and cardiology. Dr. Metzler is dedicated to her profession as well as her family.

She, her husband, Jeff, and their six children Daniel, Brandon, Madison, Meridythe, Maycie and Noah live in Bowie, Texas. They enjoy the country life as it supports the many family pets and farm animals they care for and love.

Click here to contact Dr. Metzler.

Scott Hammer, D.V.M.

Scott Hammer, D.V.M.

Dr. Hammer is a new addition to our team of doctors. His special interests include exotic animal medicine and surgery for birds, reptiles, and small mammals such as rabbits, guinea pigs and ferrets. Dr. Hammer graduated from NC State College of Veterinary Medicine. Following graduation he went on to complete an internship in exotic companion animal medicine. He practiced for a few years in Connecticut then made the decision to follow his heart (and now fiance) to the great state of Texas.

Dr Hammer treats all kinds of species seen at SAH but has a soft spot for exotics. He also has a big interest in small mammal dentistry. He enjoys anesthesia and pain management. Dr. Hammer strongly believes client education is one of the most important aspects of the veterinary profession especially for our exotic companions. In addition, He is a big proponent of preventative medicine for all species.

SAH is pleased to have Dr. Hammer as the newest member of our team. We are confident he is going to be a tremendous asset to our clients and most importantly our patients.

Dr. Hammer is already enjoying North Texas’s weather and spending time outdoors. He currently shares his home with a mix of mammals, reptiles, and fish. He visits the Fort Worth zoo regularly to visit the animals and see his fiance (who is also the zoo staff veterinarian) caring for the many exotics there.

Josh Meyers, D.V.M.

Josh Meyers, D.V.M.

Dr. Meyers was born in Fort Worth, TX and raised in Wichita Falls, TX.  He attended both TCU and Midwestern State University majoring in biology and minoring in chemistry to receive his Bachelors of Science in 2006. He then went on to receive my Doctorate of Veterinary Medicine from Kansas State University College of Veterinary Medicine in 2010. Dr. Meyers has worked at several clinics in the Wichita Falls, TX area since graduating focusing on companion animal care. Dr. Meyers since has relocated his veterinary career back to where it all began in this unique and cultural community of Fort Worth and the DFW area. Dr. Meyers is proud serve this community and each and every pet to the best of his ability.Growing up around horses, cattle, dogs, and a cats were some of the many factors that influenced Dr. Meyers decision to become a veterinarian.

Christina Mathis, D.V.M.

Christina Mathis, D.V.M.

Dr. Mathis was born and raised within an island community in Alaska before moving to Texas to embrace country living.

After acceptance into the Texas A&M College of Veterinary Medicine, she focused her education on small mammal and exotic medicine. She participated in veterinary externship programs from locations such as the Dallas Zoo, Fossil Rim Wildlife Center, and the Tennessee Aquarium before joining Summerfields Animal Hospital.

Dr. Mathis has a special place in her heart for dogs and cats and has interests in behavior, ophthalmology, and dentistry. She has goals to become certified in small exotic mammal medicine and is excited to be practicing in Fort Worth. We are so excited to have Dr. Mathis as a part of our veterinary team.

She spends her free time training service dogs and advises trainers from other programs on behavior modification techniques.