Delavan Lakes Veterinary Clinic, S.C.

Delavan Lakes Veterinary Clinic, S.C.

CALL 262.728.8622Hours & Map
262.728.8622 HOURS & MAP


We are very proud to have a talented group of the very best veterinarians in our region. Please feel free to contact them with any questions that you might have through our office. Each vet is accomplished in his/her practice and specializes in specific portions of veterinary medicine.

Our veterinarians spend many hours each year attending educational seminars, meetings, and conferences to further their knowledge in the care of pets.  This allows them to provide the best care to your pets.

Dr. Christine Hartwig, DVM

Graduate of University of Wisconsin-Madison College of Veterinary Medicine

Dr. Chris Hartwig is originally from a small town in Minnesota near the Twin Cities. She attended the University of Wisconsin - River Falls and the University of Wisconsin - Whitewater before graduating from veterinary school at the University of Wisconsin - Madison.

Dr. Hartwig enjoys all aspects of the veterinary field especially her interactions with pets and their owners. Special areas of interest also include surgery, cardiac medicine, ultrasound and rabbit medicine. Dr. Hartwig is an official veterinarian for the House Rabbit Society of Wisconsin and volunteers her time and services to Fellow Mortals, a wildlife rehabilation center.

Dr. Hartwig and her husband Scott have three adult children - Kevin, David, Dana, and four grandchildren.  They also have two Australian Shepherds named Odie and Chase, two cats named Wheezy and Mitten, three Nigerian Dwarf goats named Frank, Fiona, and Frito, three minature horses named BB, Jingle, and River, and their Appaloosa horse Mighty.  In their free time, they both enjoy hiking, gardening/landscaping, and traveling.


Dr. Kevin Hartwig, DVM

Graduate of St. George's University College of Veterinary Medicine

Dr. Kevin Hartwig grew up in southeast Wisconsin and attended University of Wisconsin-River Falls where he received his B.S. degree in Biomedical Science.

He graduated from St.George's University School of Veterinary Medicine, located in Grenada, West Indies, and completed his fourth year at the University of Georgia.

Dr. Hartwig enjoys many aspects of small animal veterinary medicine and surgery including internal medicine, oncology, soft tissue surgery, and diagnostic imaging,  Dr. Hartwig has experience in many different routine and complicated soft tissue surgical procedures.  Dr. Hartwig has completed many hours of training to provide DLVC with comprehensive diagnostic ultrasound evaluation of cats and dogs.

Outside of the clinic, Dr. Hartwig enjoys traveling, sports, and spending time with his wife, daughters, and their three-legged dog, Ashland.  He also enjoys tending to his saltwater reef aquarium residing in the lobby of DLVC.



Dr. Hannah Kartzinel, DVM

Graduate of University of Tennessee College of Veterinary Medicine

Dr. Hannah Kartzinel is originally from Mt. Juliet, Tennessee. She earned her B.S. in Biology from Union University then went on to earn her DVM from the University of Tennessee College of Veterinary Medicine in Knoxville, TN.  She had been practicing for several years in Tennessee.

Dr. Kartzinel enjoys getting to know people and their pets. She is passionate about teaching owners and enjoys being a part of caring for each pet. Her areas of special interest include preventative medicine and nutrition as well as oncology and internal medicine.

Outside the clinic Dr. Kartzinel savors spending time with her husband, John, and their two sons, Elijah and Henry. She likes being outdoors, camping, fishing, running, and baking. She and her family are excited about relocating from Tennessee and are looking forward to learning about and loving Wisconsin!


Dr. Patrick Carroll, DVM

Graduate of University of Wisconsin-Madison. College of Veterinary Medicine

Dr. Carroll is originally from Connecticut but is looking forward to staying in Wisconsin to practice veterinary medicine. He is very excited to begin building relationships with clients and being able to work with exotic species in addition to working with cats and dogs.

At home he has a rambunctious 2-year-old orange tabby cat named Macaroni that loves to join him on walks outside (which he does well with despite having only 3 legs!). He also recently adopted a 1-year-old Syrian hamster named Pepino that needed a home.

Dr. Carroll is currently working on publishing a research study that demonstrates how computer vision models can play a beneficial role in veterinary dermatology for pet-owners, researchers, and clinicians.



Dr. Maura G. O’Brien, DVM, DACVS

Graduate of the University of Florida. Diplomate of the American College of Veterinary Surgeons

Dr. O’Brien graduated from the University of Florida in 1987. After completing a three-year residency in small animal surgery at Tufts University School of Veterinary Medicine and Angell Memorial Hospital in Massachusetts, Dr. O’Brien was accepted as a Fellow in Surgical Oncology at Colorado State University of Veterinary Medicine in 1993.

Dr. O’Brien has extensive small animal surgical experience. She spent eight years in Southern California, two years in Wisconsin, and then moved to Colorado and Wyoming, where she opened a mobile veterinary surgery practice known as Orchard Road Veterinary Surgery, Inc.

In 2006, Dr. O’Brien relocated her mobile surgery practice to Madison, WI. Over the past several years in Wisconsin the practice has grown and currently offers its surgical service to more than 50 veterinary hospitals in south central Wisconsin.

As a board certified traveling surgeon, Dr. O’Brien has been performing a variety of advanced orthopedic, neurological, and soft tissue surgery here at the clinic on an ‘on-call’ basis for several years.

 Dr. O’Brien enjoys horseback riding, gardening, and spending time with her people family and her pet family of dogs, cats, and horses.

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