Meet Our Team

Dr. Michael Gass
Veterinarian
Dr. Michael Gass grew up in Wisconsin Rapids with dogs and cats. He has wanted to be a veterinarian since he was in grade school! Dr. Gass is now a full-time veterinarian and part-owner of the Animal Hospital of Ashwaubenon.
Dr. Gass earned his undergraduate degree in biology at the University of Wisconsin-River Falls before attending the University of Wisconsin-Madison to receive his Doctorate of Veterinary Medicine. Dr. Gass started at the Animal Hospital of Ashwaubenon after graduating in 1997 and has worked here ever since. He has a special interest in internal medicine and loves that every day’s workload brings something different. He enjoys building long-term relationships with the clinic’s clients and their pets.
In his spare time, Dr. Gass enjoys fishing, camping and golfing. He lives with his wife, Becky, their two daughters, Katelyn and Kyah, and several pets. The furry family members include Cashew, a King Charles Cavalier; Charlie; a Golden Retriever, Abbey, a Sheltie, three cats named Kahlua, Bogey, and Wynter; two rabbits; a pair of guinea pigs; and a chinchilla.

Dr. Seth Kramer
Veterinarian
Dr. Seth Kramer grew up in Sheboygan, Wisconsin, and attended Calvin University for his undergraduate degree. He then went on to attend Veterinary school at the University of Illinois Urbana-Champaign, where he graduated in 2011. He has special interests in internal medicine, imaging and clinical pharmacology.
Outside of work, he enjoys spending time with his family, including his wife and three children, gardening, cooking and traveling.

Dr. Brian Theuerkauf
Veterinarian
Dr. Brian Theuerkauf is originally from Minocqua, Wisconsin. He attended the University of Wisconsin- Madison School of Veterinary Medicine and graduated in the spring of 2021. His primary interests are in internal medicine, preventative medicine, and soft tissue surgery. Brian and Hannah moved to the Northwoods with their cat, Moe, where they enjoy the outdoor lifestyle and year-round activities.

Debbie
Client Services Representative
Debbie grew up on a farm where she developed a love for animals, especially cats. She always wanted to work in the animal field and when the opportunity came to work at a veterinary clinic she took it.
Debbie started at the clinic in August of 1989 after finding out from a friend that the hospital was hiring. She loves working with her compassionate and skilled coworkers and adores seeing all the pets who visit the clinic daily.
Outside work, Debbie enjoys reading, walking, bicycling, playing computer games, and spending time with her family and pets. She lives with four cats: Turbo, who is very energetic and into everything, Nosey, who enjoys opening closed cupboards and drawers, Cruiser, who is able to master treat puzzles within a few hours; and Dandelion, who is a mischievous little girl who must be watched at all times to prevent her getting into things she shouldn’t.

Kris
Hospital Manager, CVT
Kris joined the Animal Hospital of Ashwaubenon in 1992 as a Certified Veterinary Technician. She went into management in 2008 and loves the business side of Veterinary medicine almost as much as the patient care side.
Kris’s favorite part of her workday is inventory management and interacting with the clinic’s clients and their beloved pets. She has a special interest in canine behavior and senior pet wellness. Her childhood cat lived to be 21 and she currently has a very active 14 yr old senior dog named Spike.
Kris recently adopted a new black and white kitty who goes by the very generic name of “Kitty”. She said he is the naughtiest of all the kittens she has had in her life. He chews on everything, gets on the counters, makes a mess at his food plate, yet she says he is the purrfect cat because he has brought so much love into her family’s life with his biscuit making paws and his loud, rumbling purr.

Alison
Lead Certified Veterinary Technician
Alison grew up in the Shawano County area and always loved spending time with animals when she was younger. Her neighbors had a small farm where she would spend time taking care of the farm’s calves, kittens, and dogs. She always knew that she wanted to work with animals when she was growing up.
Alison attended the Veterinary Technician program at Fox Valley Technical College, which was the first year this program was available to the Fox Valley area. She graduated from FVTC in 2021 and joined the team at Ashwaubenon in June of 2021.
Outside of work, her favorite past times include downhill skiing, ice skating, hiking, and water skiing when she can! She also loves to travel and go sightseeing with family and friends. Alison currently doesn’t have any pets but is hoping to add one to her family soon!

Lila
Client Services Representative
Lila was a longtime client of the Animal Hospital of Ashwaubenon before she joined our team. She has been a member of the clinic since the fall of 2003.
In her spare time, Lila enjoys time with her grandson and trips to Door County.

Cari
Client Services Representative
Cari began her veterinary journey in northern Wisconsin after being offered a position in a small animal clinic. That's where she fell in love with the animal-care profession.
After moving to the Green Bay area in 1998, she became a staple at the Animal Hospital of Ashwaubenon. She is one of the first smiling faces you will see upon entering our doors. Cari has a positive and caring attitude and has one of the calmest demeanors. She loves working alongside her fellow staff members and seeing the joy and companionship pets offer to our clients.
Cari lives with her Maltese/Shih-Tzu, Annabelle. In her free time, she has been studying to become a clinical herbalist and her favorite things to do are expanding her garden, going on long hikes with Annabelle and reading.

Stacie
Client Services Representative
Stacie spent much of her childhood growing up in the countryside of Seymour. Along with her parents and brothers, she spent time with the family’s horses, dogs, cats, and ducks. She developed a love for animals early on in life! Stacie always knew that she wanted to work hands-on with pets, and she is thrilled to be able to do that as a member of the Animal Hospital of Ashwaubenon.
Stacie’s worked at a local pet store, where she became a specialist in small-animal, reptile, aquatic, and bird care. Next, she entered the world of dog grooming and would help pets look and feel their best for the next 10 years. She then took some time off to raise her youngest child. She is now a member of our Client Service Representative team since February of 2019 and couldn’t be happier with her choice.
When she is not at work, Stacie likes crocheting, reading books, camping, fishing, hiking, and was previously a Girl Scout Leader for her daughter and soccer coach for her son. She and her husband have three wonderful children. Stacie’s oldest daughter is studying veterinary medicine in college. They share their lives with a range of pets: dogs named Lucy, Shiloh, and Enzo, 5 kitties- Hermione, Midas, Casper, Groot and Alua, and several foster kittens and puppies at any given time.

Amanda
Client Services Representative
Amanda is a native of the Green Bay area. As a young girl she always loved animals. Her first pet dog Laddie enjoyed coming to this very vet clinic for pet care, so joining the team at the Animal Hospital of Ashwaubenon in August of 2020 was an easy choice.
In her spare time she enjoys being with her two children, Emalyne and Wyatt. They take great care of their kitty, Moana and gecko lizard, Handsome. A few activities Amanda enjoys are yoga, winery tasting, and traveling.

Lisa
Veterinary Assistant
Growing up, Lisa rescued a wide variety of wildlife and had plenty of domesticated pets. She has wanted to work in the animal field since she was a little girl! Lisa followed her dream and became a Veterinary Assistant at the Animal Hospital of Ashwaubenon.
Lisa started here at the clinic in June of 2007. She loves talking with clients about their pets and sharing stories about her own pets. For Lisa, being able to educate a pet owner and help their furry friend is the ultimate reward!
In her time away from the hospital, Lisa enjoys riding her motorcycles, going on road trips, bicycling, hiking, camping, and spending time with her pets. She shares her life with four dogs named Jenga, Scrabble, Rummy and Twister.

Katie
Veterinary Assistant
Katie has loved animals ever since she was young. She worked with the National FFA Organization during her high school years, which inspired her to pursue a career in agriculture and veterinary medicine. Now, she feels fortunate and proud to care for the pets at the Animal Hospital of Ashwaubenon as a veterinary assistant.
Katie is originally from Freedom, Wisconsin and attended college in Wausau, Wisconsin where she obtained her degree in Veterinary Science. After her schooling she started a job on a dairy farm as the assistant dairy farm manager, where she got to work firsthand with her favorite animals, COWS! Next Katie decided to transition into companion pets. She was hired by the Animal Hospital of Ashwaubenon team in July of 2016; and now serves pets daily as a veterinary assistant.
Away from the hospital, Katie is an avid deer hunter and outdoors woman who enjoys her time camping with her family as well as tackling the many projects around the farm. She shares her life with her husband and two daughters on their hobby farm. Katie has one house cat, Luke, who keeps her on her toes and out in the barn you can find her many chicken friends and her growing herd of goats. Katie hopes to soon be adding a few bovine friends to her barn!

Keith
Certified Veterinary Technician
Keith grew up in Two Rivers, Wisconsin. He has quite an appreciation for nature and an intense love for animals. Now, he gets to care for the pets as a Certified Veterinary Technician! Keith graduated from Madison Area Technical College in 1990, becoming a certified Veterinary Technician. It was through his internships, working with both small and large animals, that he found he enjoyed the interaction with pets and their families. Keith worked in Manitowoc as a Technician before serving at a red deer farm in Denmark, then built a house north of Green Bay and signed up at the Animal Hospital of Ashwaubenon in 1996!
Keith particularly likes working in the laboratory and being able to discover things through the microscope to help the veterinarians. He’s also interested in surgery and loves using his skills to their fullest potential to better the lives of pets in need.
In his spare time, Keith enjoys walking, fishing, hunting, and practicing meditation and yoga. He lives with his wife Jeanna and their many pets. Jed, a Border collie, likes to steal all the toys and bones; Keith’s four cats’ personalities change by the week, but they all enjoy turning their noses up at new foods.

Wyatt
Veterinary Assistant
As a native of Northern Louisiana, I've developed a deep appreciation for the outdoors and a strong work ethic through my experiences on farms, where I've worked with horses, cattle, and other animals. This rural upbringing, combined with my athletic background in football and track/field, has instilled in me a passion for hard work, teamwork, and compassion for living creatures. I'm currently pursuing a career as a veterinary technician, with a long-term goal of working with wildlife.
When I'm not studying or working, you can find me hiking, camping, or exploring the great outdoors with my family. I'm also an avid weightlifter and enjoy spending time with friends playing Dungeons & Dragons. As a husband and father to a young daughter named Wynona, I prioritize family time and cherish the moments we share together. My love for the Green Bay Packers brings me joy and excitement, and I'm grateful to call Wisconsin home. I'm excited to bring my skills and passion to a career that makes a positive impact on the lives of animals and the people who care for them.