Meet Our Team

Dr. Peter Janssen, M.S., D.V.M.

Dr. Janssen was born and raised right here in Wisconsin. He attended the UW- Madison, earning a Bachelor’s Degree in Zoology, a Masters Degree in Environmental Toxicology and, of course, a Doctorate in Veterinary Medicine. He has been practicing veterinary medicine since 1988 and opened the Janssen Clinic for Animals in 1990. In October ‘06, he was named Veterinarian of the Year at the WVTA annual convention, an honor that he is humbled by.

Many pets have been part of his life including dogs, cats, rabbits, hamsters, turtles, an alligator, a hermit crab and most recently a hedgehog. He enjoys spending time with his wife, Audrey (our office manager) and three children, Dana, Ava, and Peter. Dr. Janssen is thankful for all the wonderful clients and patients that he has had the privilege to know, and looks forward to each day at JCA!

Ellie, Certified Veterinary Technician

Ellie came to the JCA team with over 6 years of experience as a Vet Tech including some emergency clinic vet tech work. As a graduate of the MATC Vet Tech she is excited to share her knowledge with pet owners and her own pets.

At home, Ellie's 3 cats, Gato, Fire and Gunther have made room for her daughter, Skylar, born August 2008 and Wyatt, born in November 2009 and Kate, born 2012!!

Audrey, Office Manager

Behind the scenes most of the time, Audrey keeps the food ordered, the schedule up to date and the forms revised. With a talent for organization, Audrey brings a wealth of experience and energy to the clinic. She is a UW alumnus and also holds a Masters Degree in management from Cardinal Stritch College.

Audrey has had many pets in her life including lambs, dogs, cats and a horse. At home, she likes to keep busy with 4-H as the Cat Leader, Scouts, and many other activities with her three children.

Danielle Ziegler, CMP, CVT

Danielle is originally from the suburbs of Chicago and moved to the Madison area in 2008. She is a Certified Meeting Professional and has been a Certified Veterinary Technician since 2011. Her past experience includes working at the University of Wisconsin-Madison Veterinary Care in the Critical Care Unit. When she is not working at JCA, Danielle is an independent meeting/event planner for a variety of organizations around the country. She currently resides in Oregon with her husband and fur kids – Kenai, a border collie lab mix, and four chickens. In her spare time, Danielle enjoys hiking, camping, volunteering, and spending time with her husband and Kenai at her lake home up north.


Find us on the map

Office Hours

Our Regular Schedule


7:30 am-5:00 pm


7:30 am-5:00 pm


7:30 am-5:30 pm


7:30 am-5:00 pm


7:30 am-5:00 pm


9:00 am-12:00 pm





Read What Our Clients Say

  • "Dr. Janssen is a consummate veterinarian who does a terrific job with my dog. He is gentle and thorough and really knows his stuff. He has a great staff of assistants that are friendly to clients and their pets. 10/10 would recommend."
    Travis Drow
  • "We were met with a friendly welcome the minute we arrived and the staff handled my dog with great care. She became at ease with them very quickly. I would recommend Janssen Clinic without reservation and will continue to have them treat my dog for all her veterinary needs."
    Paula Behling
  • "Janssen Animal Clinic has always been wonderful to Bagel, my almost 18 yr old Border Terrier. Dr. Janssen and his staff are courteous, professional, and treat Bagel with lots of TLC. Dr. Janssen is very thorough with his exams and always ready to listen to my questions and answer them in a manner that I can understand."
    Linda Barrett
  • "We have a 5 star rating from 99.1% of our clients!

    We've been bringing our pets to Janssen Clinic since 1998. Dr. Janssen and his team are the best. I never struggle trying to get in for an appointment & they are so kind and good with my pets. Dr. Janssen is very calm & caring. My dog is high strung & extremely attached to me. She calms down quickly in their office, however, because of their ability to soothe her. We wouldn't go anywhere else."
    - Sharon and Kendall D / Middleton, WI