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Meet Our Skilled Team

Learn Who We Are

  • Mikayla

    Mikayla graduated from UW River Falls in December 2018 with a bachelor’s in animal science. When not at work she loves being outdoors or working on crafts. She has two dogs Waylon and Dixie that love to be outside hiking. Mikayla and her Fiancé have a herd of beef cows and enjoy working with them as well as getting them ready for shows. She loves taking care of animals and the unexpected events of each day.

  • Jackson

    Jackson is Dr. Hein's Loyal steed. He can be found carrying a dog bowl begging you to put treats inside of it. He is very food motivated but so is the rest of the staff. 

  • Max

    Max is one of our mascots here at Van Loon Animal Hospital. Max is a long-haired brown tiger cat. You can find him lounging around the yard or sprawled out on the counter silently judging everyone.JacksonJackson is Dr. Hein’s loyal steed. He can be found carrying a dog bowl begging you to put treats inside of it. He is very food motivated but so is the rest of the staff.

  • Mark Hein, DVM

    University of Madison School of Veterinary Medicine Charter Class 1987

    Dr. Mark Hein is a graduate of the “Charter Class” of the University - Wisconsin School of Veterinary Medicine. He was the first veterinarian in Western Wisconsin to offer laser surgery to pet owners as an alternative to more painful conventional surgeries.

    Dr. Hein founded specializing in reconstructive joint surgery, implementing the TPLO as the surgery of choice for cruciate ligament repair. Dr. Hein enjoys archery, mountaineering, waterfowling, and trail riding on his 'paint' horses. His family operates Hein Farms, LLCgrain farming 7 farms in LaCrosse and Trempealeau County.

    Dr. Hein and his wife, Anne-Marie operate Van Loon Animal Hospital and enjoy the company of three beautiful daughters and a son residing in beautiful Trempealeau, WI

  • Chris

    Chris has been grooming at our facility since 2001. Prior to grooming, she worked with us as a doctor assistant. She grew up in Holmen and comes all the way from Rushford to join us. Chris enjoys grooming her own pets when she is not attending to her three beautiful children.

  • Lauren

    Is a fourth-year undergraduate student at UW La Crosse. She is studying to become a Veterinarian and is originally from North Carolina and recently moved to Green Bay. In her free time, Lauren enjoys playing sports, outdoors and making friends. Laurens's perfect day would be a weekend by the lake with her family.

  • Ellie

    Ellie is an Alaskan transplant that has twenty years of experience working with animals large and small. She is a certified Humane Officer and Rabiestrained. She has rehabilitated wildlife from Alaskan predators, bobcats, seals, and plenty of raptors down to the tiny Wisconsin opossums’ orphans. Ellie is currently working to finish her bachelor’s in animal science. Ellie is owned by two dogs (The Duke of Earl and Sir Nigel Cunningham IV of Orchester), and a pigeon that she rehabilitated and released two years ago. The pigeon “Buddy “, although released with two siblings into the wildBuddy, has decided Ellie is the bee’s knees. Buddy has moved twice; following Ellie wherever she goes.

  • ​Brianna

    Brianna graduated from the University of Wisconsin- Platteville in May of2020. She obtained her bachelor’s in animal science with a Pre-Vet emphasis. When not at work Brianna enjoys spending time with her dog Max and cat Fred. She enjoys going on hikes and just generally being outdoors. Especially hunting and fishing. Brianna plans on going back to school in the near future to finish her Doctorate in Veterinary Medicine.

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Office Hours

Our Regular Schedule

Holmen Office


7:30 am-5:00 pm


7:30 am-5:00 pm


7:30 am-5:00 pm


7:30 am-5:00 pm


7:30 am-4:00 pm





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Read What Our Clients Say

  • "Van Loon is a wonderful place. The doctor is very kind and knowledgeable and the staff are amazing. Its a friendly atmosphere when you walk in and everyone greets you, even furry friends. I am so happy to have found this veterinary clinic!!"
    Annette M.
  • "Everyone was vary nice. The Doctor took time to explain everything to us. I would give this place a 4 star rating"
    Dawn B.
  • "Our dog loves these people and his stays he has had here. Just had to say time for vacation and he was trying to get in the car. Best vet and caring staff around. He gave them 5 stars!"
    Jenn R.
  • "Wonderful Dr. and staff willing to go the extra mile for me and my furmily. :)"
    Rhonda N.