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Meet the Team at A-4 Animal Hospital

Dedicated Group of Professionals

Each one of the veterinarians at A-4 Animal Hospital has dedicated their lives to helping dogs, cats, birds, and small mammals. They are passionate about the care they provide and so is the rest of our staff!

Dr. Brad Gengenbach

DVM Medical Director

Picture & description coming soon.

Dr. Katy Langdon, DVM

DVM Associate Veterinarian

Dr. Katy graduated from UNL in 1987, and the University of Missouri College of Veterinary Medicine in 1991. She worked at A-4 as a student during her senior year at UNL, then returned as a vet in 1992. Dogs, cats, small mammals (anything with fur) are her main areas of focus, but she also enjoys seeing birds and reptiles when needed. Dr. Katy has been married to James since 1995, and they have 3 children, Luke, Anna, and Emma. The kids' various sports and activities keep the whole family on the go. She and her family have enjoyed the company of a large number of dogs, cats, and birds over the years.

Sandy Hayward

Practice Manager

I have been with A-4 Animal Hospital since 2009. I love what I do, the people I work with, our clients and all of the amazing animals we see every day. I value all the connections that I have made here. I am the mother of two amazing daughters and three elderly dogs. When I am not at work, hanging out with my pups, or spending time with family and friends, you can find me outside working in my yard or off on my bike.


Jessica Temple


Picture & description coming soon.

Sierra Bogle


Picture & description coming soon.

Brittany Severson


I graduated from NCTA in 2003. I have worked with small animals since. I have 4 cats, 2 dogs, 1 guinea pig, turtles, fish, snails, and plecostomus. My hobbies include art and crafts with my daughters, gardening, reading, and cooking.

Dharian Ahrens

Vet Assistant

PictuMy name is Dharian and I graduated from the Nebraska College of Technical Agriculture in 2021 and am working to become a licensed veterinary technician. I currently have 2 cats, Farley and Binx, and a border collie, Finch. In my free time I enjoy baking and training Finch as a stock dog. re & description coming soon.

Shannon Miller

Vet Assistant/CSR

Picture & description coming soon.

Sydney Kirk


I started working at A-4 Animal Hospital in December of 2021. I have elected myself the president on sole member of the decorating commity. I enjoy interacting with our clients and providing care of their pets. In my spare time, I like reading, workout and spending time with my daughter.

Brittany Horbach

CSR/Future Vet

I have been working in the veterinary field since 2019, both in clinical and laboratory settings. I was recently accepted into veterinary school and look forward to pursuing my career as a vet. In my free time I enjoy playing Minecraft, watching Netflix, and spending time with my bearded dragon. Picture & description coming soon.

Maddy Fischer

Kennel Staff

I started working at A4 in 2022. I am a pre veterinary student at UNL. I have always been passionate about working with animals and conservation since I was a kid. In my free time I enjoy spending time outside in nature.

Emma Vazquez

CSR/Future Vet

Picture & description coming soon.

Emma Beckenhauer


Nicole Ackland

Vet Assistant/CSR

My name is Nicole, I’m 24 years old . I went to school at the Nebraska college of technical agriculture and graduated in 2019. I have two dogs, an Aussie mix (Maverick) and a corgi (Stetson) , I also have two horses. I travel and show my horses competitively. In my free time I enjoy taking care of my horses, spending time with my dogs, friends and family

Kelsie Kreps

Hi my name is Kelsie! I am a current undergraduate student at Nebraska Wesleyan getting a biology major and a chem and sociology minor. From there I am planning on going to vet school and am interested specifically in exotics and wildlife. I have a whole crew of pets at home including cats, dogs, guinea pigs, rats, and a hamster. One of my main hobbies along with fostering cats, is wildlife rehabilitation! I have been rehabbing for about 3 years now and have done raccoons, opossums, squirrels, birds, and bunnies!