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Meet Our Doctors

Meet Our Veterinarians

  • Dr.
    Karen J. Colson

    Dr. Colson grew up the daughter of Air Force parents in Tuscaloosa, Alabama. She is a 1983 graduate of Auburn University where she completed both her undergraduate work and Veterinary School. Upon graduation, she participated in an internship with small animals in Birmingham, Alabama before starting to care for animals on the professional level. She has worked steadily in the field since that time and became owner of Medlock Bridge Animal Hospital in 2004. Dr. Colson is an expert in the field of small animals, and will occasionally see exotics for minor issues. Dr. Colson lives in Duluth, Georgia with her husband Seamus and their many animals. She enjoys showing her dogs at regional dog shows as well as training animals in the disciplines of obedience and agility.

  • Dr.
    Tina M. Ballon

    Dr. Ballon was born and raised in Louisiana and was blessed to be surrounded by many different animals.  She completed her undergraduate degree in New Orleans at Tulane University and is a graduate from Louisiana State University School of Veterinary Medicine.  She completed a rigorous one year internship at Garden State Veterinary Specialists and developed her medical skills in: internal medicine, surgery, cardiology, dermatology, ophthalmology, neurology, oncology and emergency medicine.

    'I love helping animals feel better and stay healthy and look forward to the future of veterinary medicine and the advancements of Medlock Bridge Animal Hospital.  I thank God for allowing me to serve clients by answering questions and guiding them to the truth about what is going on with the furry members of their families.'

    Dr. Ballon is a member of the American Veterinary Medical Association, Georgia V.M.A. and serves as the Secretary of Cobb County V.M.A.  She lives in John's Creek with her husband John, two cats Benjamin Franklin & Lizzie Boo Boo Bear, and one dog Cocoa Bean.

  • Dr.
    Leslie Koenig

    Dr. Koenig knew from a very early age growing up in the Huntsville/Madison, AL area that she wanted to be a veterinarian. After starting out with many pocket pets, her parents finally relented and got her a dog at 12 years old solidifying her dream and life long career goal. She completed her undergraduate and veterinary degree from Mississippi State University in 2011. Soon after she moved to the Atlanta area for work and joined the MBAH staff in June 2014. Dr. Koenig currently lives in Johns Creek with her husband Chris and her menagerie of rescue animals: three cats (Alvin, Smudge & Zoe) and one dog Charity whom she brings to work most days. She enjoys knitting, gardening, SEC football and of course taking care of all the various animals that come to MBAH on a daily basis.

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Office Hours

Our Regular Schedule

Hospital Hours

Monday:

7:00 am-7:00 pm

Tuesday:

7:00 am-7:00 pm

Wednesday:

7:00 am-7:00 pm

Thursday:

7:00 am-7:00 pm

Friday:

7:00 am-7:00 pm

Saturday:

8:00 am-1:00 pm

Sunday:

Closed

Doctors Hours

Monday:

8:30 am-6:00 pm

Tuesday:

8:30 am-6:00 pm

Wednesday:

8:30 am-6:00 pm

Thursday:

8:30 am-6:00 pm

Friday:

8:30 am-6:00 pm

Saturday:

8:00 am-12:00 pm

Sunday:

Closed