Veterinarians
Dr. Adam
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Owner
Small Animal Medicine and Preventive Care
Large Animal Surgery and Internal Medicine
Dr. Jill
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Small Animal Medicine and Preventive Care
Dr. Bev
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Small Animal Surgery
Dr. Erin
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Dentistry
Equine Preventative Medicine
Small Animal Medicine and Preventive Care
Dr. Breanna
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Small Animal Medicine and Preventive Care
Small Animal Surgery
Dr. Michelle
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Small Animal Medicine and Preventive Care
Small Animal Surgery
Large Animal Medicine and Surgery
Small Ruminant Medicine
Swine Medicine
Technicians and Assistants
Brittnie
Brittnie Michalscheck joined our staff in September 2012. She graduated from Ridgewater College with an AAS degree in veterinary technology. She enjoys working with small animals and has a special interest in animal behavior. Brittnie and her husband, Robert, enjoy visiting state parks in their free time and playing ball with their dogs, Chesney and Brooks.
Holly
Holly Monnier, CVT joined Big Sioux in May 2015. She graduated from Globe University with an associates degree in Applied Science of Veterinary Technology. Holly likes working with small animals and horses with a focus on dentistry and anesthesia. In her free time, she enjoys camping, running, and spending time with her husband, Jacob, her son, Logan and her two dogs, Delco and Makita.
Amber
Amber Froehlich joined our staff in January of 2017. She graduated from Globe University with an associates degree in Applied Science of Veterinary Technology. Her interests include working with pocket pets and small animals. In her free time, she enjoys painting, reading, and spending time with her husband and cats.
Mari
Mari Mergen joined our staff in March of 2018. She is a graduate of Globe University with an associates degree in Applied Science of Veterinary Technology. She has an interest in working with small animals and monitoring anesthesia. In her spare time she loves to be outside hunting, camping, or just relaxing and of course spending time with her husband, Bailey, her son and their dog, Ada.
Abby
Abby Veldman joined the Big Sioux team in July 2022. She graduated from Southeast Technical College with an associates degree in Veterinary Technology. She enjoys working with both small and large animals. In her free time, she enjoys cooking, reading, and spending time with her husband, Trey
Jacqueline
Jacqueline Appel joined Big Sioux in July 2023 as an assistant. Currently, she is enrolled in Penn Foster’s Veterinary Technician Program. Her and her husband Matthew live on an acreage outside of White, SD with their two children, two dogs, two cats, goats, pigs, and chickens.
Alison
Alison Rice joined Big Sioux as a technician in June 2024. She graduated from Southeast Technical College with an associates degree in Veterinary Technician. She lives in Flandreau, SD. She has an interest in working with cattle and dentistry. In her free time she enjoys riding horses, rodeo, breakaway roping and her dog Haze.
Support Team
Tina
Tina Madsen joined Big Sioux as a receptionist in 2013. Tina grew up in Madison, South Dakota, and graduated from Dakota State University. Tina and her partner Duane keep themselves busy with their 6 children, 4 dogs, and 4 cats. In their spare time, they love to go camping and ride their motorcycles.
Ashley
Ashley Triebwasser joined Big Sioux as a receptionist in July 2017. Ashley is a graduate of the Lake Area Technical Institute Large Animal Program. Her and her husband, Logan, live on an acreage near Volga, with their children, 2 black labs, 2 horses, donkey, and 40 Black Angus pairs.
Sydney
Bio coming soon.
Jessica
​Jessica Waldner joined the Big Sioux team as a veterinary assistant in August 2021. She attended Southeast Technical College as a veterinary technician. She moved back to Brookings. She enjoys time with friends, coming to work, and snuggling with her dog, Ryder.