About Mad River Veterinary Hospital and Staff

Your pets are your family. They are video stars, lap-warmers, fallen-food patrollers, and bed-hoggers. They love, comfort, entertain, and support you. So when they need healthcare, you want to turn to someone you trust. Your pets' health is our calling, and we are here to help you every step of your companionship together.

They keep you happy; we keep them healthy!

William J. Maynard DVM

Dr. William Maynard (Dr. Joe) graduated from The Ohio State University College of Veterinary Medicine in 2006. He received his B.S. in Biology from Wright State University. A longtime Springfield native, he graduated from Northwestern High School. He served as a combat medical specialist in the U.S. Army before continuing as an EMT in the civilian world. While taking classes at Wright State, he became more interested in the veterinary side of medicine and has been hooked ever since. He graduated from The Ohio State University College of Veterinary Medicine in 2006. He and his wife Nikki founded Mad River Veterinary Hospital in 2013. Dr. Joe particularly enjoys surgery. Outside of work, he spends time with his sons Ryan, Evan, and Luke, and playing frisbee with his pit bull Vanessa.

Nikki L. Maynard DVM

Dr. Nikki Maynard (Dr. Nikki) originally hailed from the Urbana area and graduated from Graham High School. She received her B.A. in Biology from Wittenberg University. After receiving her doctorate from The Ohio State University College of Veterinary Medicine in 2010, she spent 3 years as a mixed animal practitioner before starting a new adventure as a small animal practice owner. An avid horsewoman, she showed her Arabian horse in hunt seat and dressage for years. She lives for travel, hiking, theater and music, and torturing Joe with cooking experimentation. Most of her free time outside of work is devoted to caring for two young sons.

Megan Leese DVM

Dr. Megan Leese grew up in Indiana, and knew she wanted to be a veterinarian since she was three years old. She never wavered from her dream, and made it a reality when she graduated from Perdue University College of Veterinary Medicine in 2018. Since January 2019, she has enjoyed working at Mad River Veterinary Hospital. In her free time, Dr. Leese enjoys being outside when the weather is nice, and spending time with friends and family.

Meet Our Veterinary Technicians


We are fortunate to have an amazing staff of technicians to assist in treating your pets. Left to right: Katie, Crystal, Morgan, Sarah, Shelby, Emma, Angel, Lori

Meet Our Receptionists


We have an amazing team of dedicated and passionate reception staff. Their goal is to make your overall experience as pleasant and productive as possible.

(back row, left to right) Jenna, Erin, Sara, Missy-office manager

(front row, left to right) Heather, Tina