Welcome to Van Loon Animal Hospital

Your Veterinarian in Holmen,WI
Call us at (608) 526-2200

Pet Emergency? Call us right away at (608) 526-2200!

If you live in Holmen or the surrounding area and need a trusted veterinarian to care for your pets – look no further. Mark Hein is a licensed WI veterinarian, treating all types of pets. Your pets’ health and wellbeing are very important to us, and we take every possible measure to give your animals the care they deserve.

Van Loon Animal Hospital is a full-service animal hospital and welcomes both emergency treatment cases as well as pet patients in need of routine medical, surgical, and dental care. Mark Hein has years of experience treating serious conditions and offering regular pet wellness care. Beyond first-rate pet care, we make our clinic comfortable, kid-friendly, and calm, so your pet can relax in the waiting room and look forward to meeting our Holmen veterinarian.

We are happy to offer a number of resources that enable you to learn about how to take better care of your pets. Please feel free to browse our site, particularly the informational articles. The best veterinary care for animals is ongoing nutrition and problem prevention, so becoming knowledgeable about preventative pet care is essential to the ongoing success of your animal’s health. If you have any questions, call (608) 526-2200 or contact us and we'll promptly get back to you. Our Holmen veterinarian office is very easy to get to - just check out the map below! We also welcome you to subscribe to our newsletter, which is created especially for Holmen pet owners.

At Van Loon Animal Hospital, we treat your pets like the valued family members they are.

Mark Hein
Holmen Veterinarian | Van Loon Animal Hospital | (608) 526-2200

W7683 Old Hwy 93
Holmen, WI 54636

Your First Puppy / Kitten Visit is FREE (New Patients)

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Prevention and Wellness plans are here! Please look under our services tab for more information.

Meet Our Skilled Team

Learn Who We Are

  • Mark Hein, DVM

    University of Madison School of Veterinary Medicine Charter Class 1987

    Dr. Mark Hein is a graduate of the “Charter Class” of University-Wisconsin School of Veterinary Medicine and works closely with this group on referrals in chemotherapy, orthopedics, and ophthalmology. He was the first veterinarian to offer laser surgery to pet owners in the La Crosse area as an alternative to more painful conventional surgeries. Dr. Hein also founded the Onalaska-based PETCO walk-in clinics in 1995, where clients may see a veterinarian during evening hours without an appointment. He enjoys orthopedics, archery, and organic farming.

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  • Sarah
    Practice Manager

    Sarah is our Practice Manager and has been with our hospital since 2009. She and her Husband have two Labrador Retrievers, Buddy & Moose, one Bengal cat named Brasco, a red devil cichlid fish, Hector, an African Gray Parrot named George and a Quaker Parrot named Quakers. In her free time, she enjoys catfishing, gardening and being outdoors.

  • April
    Lead Veterinary Technician

    April is our Lead Veterinary Technician and has been working in the field ever since she attended the Veterinary Technology program at Duluth Business University in 2012. She enjoys preforming dental prophylaxis and giving compassionate care to our recovering patients. April has 3 cats named Hazel, Cubby and Tux; along with 3 dogs named Bundy, Eddie and Margot. (You may see Margot around the hospital as she is April's emotional support animal). Last but not least she also has a Green Cheeked Conure named Florence. April insists that having this many pets is not crazy, and that there's always room for more. April's husband, Andy, does not always agree. 

  • Lizzie
    Veterinary Technician/Assistant Office Manager

    Lizzie recently graduated from Globe University with an Associates in Veterinary Technology. She is waiting to take her certification exam this fall. She grew up in the Melrose area and graduated from Melrose-Mindoro High School. Lizzie has three dogs, Penelope a Miniature Dachshund, Buddy, and Ellie; both Golden Retrievers. During her free time, she enjoys music festivals, water sports and going to the gym.

  • Emily
    Veterinary Technician

    Emily attended Western Technical College in 2013 to study large animal science after graduating high school. She has worked in Veterinary clinics ever since ranging from holistic to conventional medicine. A few of her favorite parts of the field are working as a lab technician, assisting in surgery and working every day to better her skills. Her passion is nursing her patients back to health with compassion as well as helping pet parents decide what route to take, whether more natural or medicinal. Emily lives in LaCrosse with her Border collie Whinnie and Holland Lop Bunny. Her hobbies include gardening, yoga and dog sports.

  • 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.

Contact Us

We look forward to hearing from you


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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-5:00 pm


8:00 am-10:00 am



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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.