Delavan Lakes Veterinary Clinic, S.C.

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We are very proud to have a talented group of the very best veterinarians in our region. Please feel 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.

Dr. Christine Hartwig, DVM

Graduate of University of Wisconsin-Madison

Dr. Hartwig and her husband, Scott are the current owners of Delavan Lakes Veterinary Clinic, which was established in 1979. Dr. Hartwig has a special interest in ultrasonography, echocardiology, rabbit medicine, and surgery.

Dr. Hartwig also volunteers her time and services to Fellow Mortals, a wildlife rehabilitation center, and is an official veterinarian for the House Rabbit Society of Wisconsin. Scott is proud to serve on the Board of Directors of the Lakeland Animal Shelter.

In their free time, the Hartwigs enjoy their 3 children and family. Their pets include two Australian Shepherds named Josie and Jackson, and their cats Wheezy, Cuddles, and Mitten. On their farm, they also enjoy their Appaloosa horses and AJ the donkey.


Dr. Simone Sidel, DVM

Graduate of St. George’s University

Dr. Sidel did her clinical rotations at the Ohio State University, followed by a one year rotating small animal internship at a specialty hospital in New York City.

She moved to Chicago in 2012 and experienced working in a variety of hospital types, including general practice, emergency, and shelter medicine.

Dr. Sidel has a special interest in behavior medicine and internal medicine.

She enjoys spending her free time going to the beach with her three dogs – Zino, a Greyhound, Xula, an Australian Shepherd mix, and Yogi, a Silky Terrier. She also enjoys relaxing at home with her cat Mossimo and exploring the Midwest with her family and friends.


Dr. Kevin Hartwig, DVM

Graduate of St. George's University

Dr. Kevin Hartwig grew up in southeast Wisconsin and attended University of Wisconsin-River Falls where he recieved 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 University of Georgia in 2011.

Dr. Hartwig has been practicing veterinary medicine in Chicago since June 2011. Having previously provided veterinary care on a part-time limited basis at DLVC, Dr. Hartwig has made a permanent transition from Chicago to further enhance the veterinary capabilities at DLVC.

In addition to his love for dogs and cats, he has a special interest in treating and caring for an array of exotic pets and wild life species, including birds, rabbits, guinea pigs, ferrets, reptiles, amphibians and pocket pets. Also of great interest is the science of ultrasound and radiography.

Outside of the clinic, Dr. Hartwig enjoys fishing, sports, and spending time with his wife, Melissa, and their three-legged dog, Ashland.


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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