Sullivan Veterinary Service, S.C.

Sullivan Veterinary Service, S.C. is a full-service veterinary medical facility, located in Sullivan, WI. The professional and courteous staff at Sullivan Veterinary Service, S.C. seeks to provide the best possible medical care, surgical care and dental care for their highly-valued patients.

We are committed to promoting responsible pet ownership, preventative health care and health-related educational opportunities for our clients. Sullivan Veterinary Service, S.C. strives to offer excellence in veterinary care to Sullivan, WI and surrounding areas.

Please take a moment to contact us today, to learn more about our veterinary practice and to find out more information about how Sullivan Veterinary Service, S.C. can serve the needs of you and your cherished pet.
  • Mon, Tues: 8:00am-5:00pm
  • Wed, Thu: 8:00am-6:00pm
  • Fri: 8:00 am - 5:00 pm
  • Saturday 8:00 am - Noon
  • Sun: Closed
  • After Hrs.: Wisconsin Veterinary Referral Center: (866) 542-3241
  • Richard L. Loof, DVM

    Veterinarian & Owner

    I arrived in Sullivan fresh from the University of Minnesota Veterinary School in 1983.  I am originally from Sheboygan County.  I graduated from Kewaskum High School and the University of Wisconsin - River Falls.

    My wife Susan and I have been married since June 1988.  Sue is the principal of St. John the Baptist school in Jefferson.  We have two children.  Joe is in his second year of graduate school in electrical engineering at Notre Dame.  Anne is in her first year of graduate school at the University of Wisconsin - Whitewater studying speech pathology.

    We have four furry members in our family.  Gertie and Maizie are our cats, Rusty is our horse, and we just added to our family a golden retriever puppy named Libby.
    My hobbies are gardening, cutting firewood, dabbling in woodworking and traveling.

    There are so many aspects of my job that I enjoy.  I love the endless variety of patients and clients.  I truly love the interpersonal contacts we make.  If I had to list my favorite thing, it would be delivering babies of all species.

    I have the best job in the world and am truly blessed to be a veterinarian, husband and father.

    Years in Practice:
    Jan 01, 1984
    University of Minnesota
  • Wendy K. Byrnes, DVM

    Veterinarian & Owner

    I grew up in Mukwonago and received my undergraduate degree in Biology from Purdue University.  I then attended the University of Wisconsin School of Veterinary Medicine where I graduated in 1999.

    I worked for several years in the Milwaukee area before coming to Sullivan in 2003.  I became an owner of Sullivan Veterinary Service in 2005.

    My favorite aspect of being a veterinarian is that no day is ever the same.  I love the variety of cases I work on everyday.  I have a special interest in orthopedic surgery and feline medicine.  

    I currently reside in Hebron with my husband and our 2 children.  Our family also includes 1 dog, 3 cats, a guinea pig and a variety of aquatic critters.
    Years in Practice:
    Jan 01, 1999
    University of Wisconsin
  • Hillary A. May, DVM


    I am originally from a small town in West Virginia and completed my Bachelor of Science at West Virginia University in 2009.  I then went on to the University of Georgia to completed a Master of Science in 2011.  I then graduated from Mississippi State University College of Veterinary Medicine in 2015. 

    I greatly enjoy the variety of species that I treat and the various owners that I get to serve.  I have special interest in preventative care, dermatology, and dentistry.

    My fiancee and I reside in Watertown with our three dogs: Mater, Ryder, and Gunner.  In my spare time, I enjoy spending time with my friends and family, kayaking, cooking, and baking.

    Years in Practice:
    Jan 01, 2015
    Mississippi State University
  • Lea A. Murack

    Practice Manager

    I grew up on a dairy farm in the Town of Concord and have always enjoyed being with animals.  I have known the doctors here at Sullivan Veterinary Service since I was a little girl.

    I graduated from Lakeside Lutheran High School in 1986, and came to work here at Sullivan Veterinary Service in 1994.  I have always wanted to be involved with veterinary medicine, and since I also enjoy accounting, this has been the best of both worlds.

    I still live in the Town of Concord with my husband and our daughter.  We share our home with our Brittany Spaniel, Lucy and our 2 horses.  
    Years in Practice:
    Jan 01, 1995
  • Lisa A. Wellnitz, CVT

    Certified Veterinary Technician

    I am a Certified Veterinary Technician here at Sullivan Veterinary Service.  I graduated from MATC - Madison in May of '97, and started working here in December of 1997.

    I live in Helenville in a home I recently purchased with my fiancee.  We have three cats, a Golden Retriever named Gus, and two chickens named Sweet & Sour.  We enjoy spending our free time camping, fishing, short track racing, and spending time with family and friends.

    I enjoy the family I have here at Sullivan Veterinary Service along with the friends I have made through the clients and patients.

    Years in Practice:
    Jan 01, 1998
    Madison Area Technical College
  • Karey Lueck

    Client Service Representative

    I am a part-time Client Service Representative here at Sullivan Veterinary Service.  I have been working at this wonderful facility since the fall of 2000. 

    I earned my bachelor's degree in Sociology from UW-Stevens Point in 1997.  I married my husband in 1998 and have 2 very active kids to keep up with.  In my free time I enjoy reading, baking, and crocheting.  

    I have always loved animals, and currently have two energetic Border Collie mixes named Tinkerbell & Lottie and two orange tabby cats named Ginger & Nutmeg.  My children are active in 4H and we hand raise chickens, ducks, and African geese which they show at the local county fair.

    I enjoy my job very much thanks to the wonderful clients and pets that I am able to work with.
    Years in Practice:
    Jan 01, 2000
  • Jennifer Gray

    Veterinary Assistant

    I began working for Sullivan Veterinary Service in 2012.  Working with animals has always been a passion of mine.

    I live in Fort Atkinson with my husband, and our 3 daughters.  We currently share a home with a Great Dane named Lily, a Pug named Millie and our cat Chelsea.  But between my girls and I, this can always change!

    Outside of caring for animals and my family, I enjoy spending time outdoors gardening, camping and hiking.  I also love going to antique/estate sales and repurposing treasures.
    Years in Practice:
    Jan 01, 2013
  • Meriel Christian

    Veterinary Assistant

    I began working for Sullivan Veterinary Service as a kennel assistant in 2012.  In 2014 I started as a veterinary assistant.  

    I am currently going to school at Madison College to become a Certified Veterinary Technician. In 2017 I graduated from the University of Wisconsin - River Falls with my bachelor's degree in Animal Science.

    I live in the Town of Concord on our family farm that I grew up on with my 30 chickens.
    Years in Practice:
    Jan 01, 2013
    University of Wisconsin - River Falls and Madison College
  • Heather Kuhl

    Customer Service Representative

    I joined the group here at Sullivan Veterinary Service in 2016.

     I live in Whitewater with my husband of almost 20 years and our 3 children.  We share our lives with a dog, 5 cats, a horse, two donkeys and about 30 chickens.
    Years in Practice:
    Jan 01, 2016
  • Nicole Pagel

    Veterinary Assistant

    I started working here at Sullivan Veterinary Service in 2017.  
    Years in Practice:
    Apr 20, 2017