Meet the Veterinary Team
Veterinarians
Dr. Sue Chastain, Veterinarian
Dr. Sue Chastain graduated from Texas A&M University with a bachelor’s in microbiology, and followed it up with her Doctorate of Veterinary Medicine from Texas A&M College of Veterinary Medicine in 1990.
Dr. Sue co-founded the Chastain Veterinary Medical Group, along with her husband, Dr. Clint Chastain, in 2000. They have owned and practiced veterinary medicine at Preston Road Animal Hospital in Dallas, TX, since 1992, and at Meadow Brook Animal Hospital in McKinney, TX, since 2003.
Dr. Sue loves working with people and their pets and enjoys the challenges that come with veterinary medicine. Her areas of special interest include veterinary dentistry and dermatology, canine and feline endocrinology, geriatric medicine, and surgery, as well as ferret medicine and surgery. She enjoys mentoring and training new veterinary and paraprofessional staff. As a result, both of CVMG's locations have the distinguished honor of being AAHA Mentorship Hospitals.
At home, Dr. Sue enjoys the companionship of a number of pets, including four cats, two birds, and a dog. She and Dr. Clint are the proud parents of two daughters, Alexandra and Miranda – both Fight’n Texas Aggies, Class of 2021. Whoop! When she’s not busy with her duties at the hospital, Dr. Sue can be found hiking, cooking, or spending time with her two- or four-legged kids.
Areas of experience and special interests:
- Emergency medicine
- General medicine and surgery of dogs and cats
- General medicine and surgery of non-traditional pets (ferrets, reptiles, birds, sugar gliders, etc.)
- Geriatric pet medicine & surgery
- Pediatric pet medicine & surgery
- Laser techniques – surgical & high-intensity therapeutic
- Mentoring recent veterinary graduates
Education:
- DVM, Texas A&M University, College of Veterinary Medicine, 1990
- BS, Veterinary Medicine, Texas A&M University, College of Veterinary Medicine, 1986
- BS, Texas A&M University, Microbiology, 1985
Memberships & Affiliations:
Meadow Brook Animal Hospital
Dr. Mari Childs, Veterinarian
Dr. Mari Childs is a graduate of the Texas A&M College of Veterinary Medicine. She joined the Chastain Veterinary Medical Group as a general practitioner at Meadow Brook Animal Hospital in 2014. Before joining the Meadow Brook Family, she served as both a Veterinary Nurse and Receptionist at several animal hospitals. Dr. Mari has completed several externships during her career, including working at multiple companion exotic animal clinics throughout the country.
Dr. Mari enjoys treating patients of all species as members of your family, and has a passion for teamwork with owners so that patients can enjoy the best quality of life possible in both the clinic and at home.
After growing up in Carrollton, Dr. Mari attended Texas A&M University and graduated Cum Laude with her Bachelor’s degree in Biomedical Science. After deciding to pursue a career in animal medicine, she continued her education at the Texas A&M College of Veterinary Medicine, where she graduated Magna Cum Laude when awarded her Doctorate of Veterinary Medicine.
Areas of special interest for Dr. Mari include fear-free methods, preventive medicine, dentistry, and the care of non-traditional pets, especially small mammals. She is particularly interested in following and researching the latest veterinary medical breakthroughs for pets, and enjoys studying cutting-edge scientific data on animal health in general.
Dr. Mari and her husband welcomed a bright, curious daughter named Emery in 2020, and a cheerful, imaginative son named Anderson in 2022. They share their house with a mischievous snowshoe cat named Toulouse and an elusive black cat named Tabitha. While she doesn't currently have any canine companions, she misses her Havanese of almost 16 years and loves seeing her favorite breed when they come to the clinic. In her free time, she enjoys cooking, exercising, going to the theater, and playing board games with friends and family.
Areas of experience and special interests:
- Preventive medicine
- General medicine and surgery of dogs and cats
- General medicine and surgery of small mammals
- Veterinary dentistry
- Fear-free methods and Cat Friendly practices
Education:
- DVM, Texas A&M University, College of Veterinary Medicine, 2014
- Bachelor of Science in Biomedical Science, Texas A&M University, College of Veterinary Medicine and Biomedical Sciences, 2010
Memberships & Affiliations:
Dr. Samantha Wise, Veterinarian
Dr. Samantha Wise is a graduate of the College of Veterinary Medicine at Texas A&M University. She joined the Chastain Veterinary Medical Group family in 2015. Before graduating from veterinary school, Dr. Samantha had worked in a small animal practice for five years as both a veterinary assistant and a receptionist. She also worked at the Texas A&M Wildlife Center caring for large exotics including ostriches, emus, tortoises, and deer. Dr. Samantha completed multiple externships during veterinary school focusing on small animal medicine, surgery, ophthalmology, and exotic animal medicine. Dr. Samantha’s areas of special interest include preventive medicine, general medicine and surgery of dogs & cats and non-traditional pets, and veterinary dermatology.
Dr. Samantha grew up in Plano, TX. She is a Summa Cum Laude graduate of Texas A&M University with a Bachelor of Science in Genetics. She continued her education at the Texas A&M College of Veterinary Medicine, where she graduated Magna Cum Laude in 2015.
Dr. Samantha and her husband share their home with three fur children: Tryg, a Giant Schnauzer; Hermes, a domestic short hair; and Penelope, a Chihuahua-Dachshund mix. Dr. Samantha and her husband also have two beautiful daughters, Livia and Abrie. In her spare time, Dr. Samantha enjoys reading, cooking, and traveling with her family.
Areas of Experience and Special Interests:
- Preventative medicine
- General medicine and surgery for dogs and cats
- General medicine and surgery of reptiles and small mammals
- Veterinary dermatology
Education:
- DVM, Texas A&M University, College of Veterinary Medicine, 2015
- Bachelor of Science in Genetics, Texas A&M University, College of Agricultural and Life Sciences, 2011
Memberships:
Dr. Kitt Mueller, Veterinarian
Dr. Kathryn “Kitt” Mueller is a seasoned veterinarian with a passion for small animal medicine and dentistry.
She knew she wanted to be a veterinarian since she was 4 years old, and since graduating from Ross University School of Veterinary Medicine in 2008, she has led and grown general practices with a focus on quality care and strong client relationships. Dr. Kitt treats dogs, cats, and pocket pets, and enjoys building lifelong connections with pet families.
Outside of work, Dr. Kitt spends time with her husband, two daughters, and their many pets. She’s also a creative artist and runs an Etsy shop, Furever Loved Studio, where she crafts memorial keepsakes to honor beloved pets.
Areas of Experience and Special Interests:
- Veterinary Dentistry
Education:
- DVM, Ross University, School of Veterinary Medicine, 2008
- Bachelor of Science in Veterinary Science, University of Nebraska-Lincoln, 2003