
Our Story
At Medlock Bridge Veterinary Hospital, our story is rooted in a deep commitment to providing exceptional veterinary care for pets in our community. Since our establishment, we've strived to create a welcoming and compassionate environment where pets and their owners feel comfortable and supported.
Our MISSION
Our mission is to enhance the well-being of animals through preventative care, advanced medical treatments, and personalized attention. We believe in fostering strong relationships with our clients, built on trust, open communication, and a shared love for animals.

CORE VALUES
Compassion
Excellence
Integrity
Partnership
Community
Meet Our Veterinarians
Meet the compassionate and skilled veterinarians who form the heart of our practice, dedicated to providing exceptional care for your beloved animal companions.


DR. Tina M. Ballon
DR. LESLIE KOENIG
Dr. Tina Ballon was born and raised in Louisiana, where she spent many summers on her grandparents’ farm caring for a wide variety of animals—an experience that helped shape her passion for veterinary medicine. She earned her undergraduate degree from Tulane University in New Orleans and went on to graduate from the Louisiana State University School of Veterinary Medicine.
Following veterinary school, Dr. Ballon completed a rigorous one-year internship at Garden State Veterinary Specialists, where she advanced her skills across multiple disciplines, including internal medicine, surgery, cardiology, dermatology, ophthalmology, neurology, oncology, and emergency medicine. With over 30 years of experience in the veterinary field, she brings a deep level of knowledge and compassion to her work.
“I love helping animals feel better and stay healthy, and I look forward every day to caring for the pets in our community. I thank God for allowing me to serve our clients by answering questions and guiding them in the care of their furry babies.”
Dr. Ballon is a member of the American Veterinary Medical Association and the Georgia Veterinary Medical Association. She is committed to continuing education and regularly attends leading veterinary conferences each year.
She lives in Johns Creek with her husband, John, and their two rescue pets, Walter Mitty and Marla Marie. In her free time, she enjoys camping and spending time outdoors with her three sons: John Jr., Paul, and Timothy.
Dr. Leslie Koenig knew from an early age that she wanted to become a veterinarian while growing up in the Huntsville, Alabama area. Her love for animals began with caring for small pets, and it was solidified when her family welcomed their first dog—setting her on a lifelong path in veterinary medicine.
She completed both her undergraduate studies and veterinary degree at Mississippi State University, graduating in 2011. Shortly after, she moved to the Atlanta area and joined Medlock Bridge Animal Hospital in June 2014. For over a decade, Dr. Koenig has been dedicated to serving the local community and caring for its pets.
Dr. Koenig lives in Johns Creek with her husband, Chris, their two children, Marie and Robert, and their beloved rescue animals, including three cats—Mickey, Smudge, and Zoe. She is always on the lookout for her next rescue dog.
In her free time, Dr. Koenig enjoys knitting, gardening, watching SEC football, and, of course, caring for the many animals she sees every day at the hospital.
MEET OUR TEAM
Medlock Bridge Animal Hospital is proud to serve the Norcross GA area for everything pet related. Your beloved pets will be in caring hands with our dedicated and compassionate team. Learn about their experience and passion for animal health.
Karina Olvera
Veterinary Assistant and Kennel Technician; also works with animals at Georgia Tech
Noelle Busse and her mascot, Marla Marie.
Receptionist; has dedicated her life to animals and has been a valuable receptionist at MBAH for decades! She always has a smile on her face and welcomes you like family. Noelle enjoys going to all the Georgia art festivals and collecting earrings.
Ellie Whitesides with Axel, our foster kitten.
Veterinary Assistant and Kennel Technician: Ellie has been working at MBAH since she attended Norcross High School. She now works part time during her breaks from Berry College where she is actively pursuing a long-term role in veterinary medicine! Ellie would be the fifth young adult to go on to Veterinary Schooling after working here at Medlock Bridge!
Caya Lee with Abby her dog
Veterinary Assistant: Caya has achieved her Master in Animal Science from Tuskegee University. She always has a positive outlook on things and is actively awaiting her commencement to Veterinary School!
Angel Galloway
Angel is a very caring and talented Veterinary Assistant with over a decade of experience helping fur babies in our community. She enjoys spending her free time with her five cats and two rescue pups, Rogue and Stome.
Alex Pittman and her pug family
Alex is from Duluth, Georgia and graduated from Duluth High School. A very loyal and talented receptionist with efficiency in record gathering/keeping and helping our clients on a daily basis. You can visit Alex’s two pugs and dachshund here at MBAH because they have special daily needs while Alex also cares for so many.
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Welcome to Our Clinic: A Look Inside
Get a feel for our friendly and professional environment. Browse our photos and videos to see where your pet will be cared for by our dedicated team in our comfortable and well-equipped hospital.
Business Hours
Hospital Hours:
- Monday-Friday: 7:30 am-6:30 pm
- Saturday: 8:00 am-1:00 pm
- Sunday: Closed
Doctors Hours:
- Monday-Friday: 8:30 am-6:00 pm
- Saturday: 8:00 am-12:00 pm
- Sunday: Closed
Office Hours
Our Regular Schedule


