Meet Our Veterinarians in Peoria, IL

Whitney Veterinary Hospital would not be what it is today without the dedication of our hardworking and dedicated veterinarians and support staff

Nancy J. Hayes, D.V.M., C.C.R.T./Practice Owner

VeterinariansDr. Hayes began as an associate veterinarian at Whitney Veterinary Hospital in 1987. After being a partner for many years, she purchased the practice from Dr. Robert Whitney when he retired. She always knew she wanted to be a veterinarian. As a child, she adopted dogs, cats, guinea pigs, fish, goats, and other needy creatures. In high school, she worked evenings and weekends for their family veterinarian, cleaning cages, floors, and equipment, and assisting in any way he would let her. She never considered another career. Looking back, in addition to her love for pets, she had a desire to bring help and hope to their families, too.

Dr. Hayes attended Lincoln Land Community College (now part of University of Illinois) and continued to work full-time for her family veterinarian. Accepted into University of Illinois Veterinary Medicine program in 1983, she graduated in 1987.

As the practice owner, she mentors the other doctors and enjoys developing all of her staff to their fullest potential. Her special interests are orthopedic conditions, especially fracture repair and TPLO surgeries for repairing a torn ACL. She has advanced training in orthopedic surgery as well as certification in canine rehabilitation therapy. She enjoys diagnostic medicine including radiology, ultrasonography, and endoscopy. She has a soft spot for senior patients, but still needs to snuggle new puppies and kittens whenever possible.

Dr. Hayes shares her home with her mother, Le, and their four dogs. Poppy is their little golden who enjoys snuggling. Morgan is a flat-coated retriever who also enjoys snuggling, playing with balls, and is Nancy’s all-around pal as well as being an occasional blood donor for the hospital. Morgan is a flat-coated retriever who also does agility and is Nancy’s all-around pal as well as being an occasional blood donor at the hospital when needed. Pebbles and Splash are the youngest of the group, Pebbles loves doing agility with Le. Splash is a frequent visitor to the hospital and loves to brighten our team’s day with her playful personality!

Dr. Hayes has served on many professional boards as well as local clubs. A life- long learner, she attends many regional and national continuing education meetings. She encourages and enables her entire team to do so as well.   

When Dr. Hayes isn’t working she enjoys dog training with Splash, traveling, and quilting. She also loves reading, agility shows, gardening, and photography.

Marie (Frankie) F. Roe, D.V.M., C.H.P.V.

VeterinariansDr. Roe is a native of Montreal, Quebec, Canada and received her veterinary degree in 1998 from the University of Montreal College of Veterinary Medicine.  After graduation, she did a one-year internship and a three-year residency program at the University of Illinois, College of Veterinary Medicine. She joined our practice in 2002. Since the age of 9, Dr. Roe knew that she wanted to be a veterinarian so that she could work with and care for animals.

Dr. Roe is a member of the following professional organizations: American Veterinary Medical Association, American Animal Hospital Association, The Illinois State Veterinary Medical Association, and the American Association of Feline Practitioners. She has a special interest in feline medicine, cytology, dermatology, oncology, internal medicine, soft tissue surgery, feline behavior, dentistry, and infectious diseases of dogs and cats.

Dr. Roe worked together with our C.V.T. Jill C. to have our hospital become a certified Cat Friendly Practice®, ensuring that our feline patients have the most comfortable and positive experience during each visit. Dr Roe is pursuing a certification in Animal Hospice and Palliative Care. This newer avenue to Veterinary Medicine focuses on supporting our clients during the difficult times surrounding their pet’s end of life.  

Dr. Roe is married to her wonderful husband D.J. They have three beautiful children:  step-son Travis, daughter Madelyne, and son Tristin. They share their home with four Cornish Rex cats: Yu-Kiko, Miko, Starla, and Rico. Their family also includes Pippy, a Chinese crested dog.

Dr. Roe loves to stay active and keep fit. She enjoys baking, cooking, traveling, hiking, and spending quality time with her family.


VeterinariansDr. Myers grew up on a swine, cattle and row crop farm in Missouri and also spent time on her grandparents’ farms. Her desire to help all kinds of animals fueled her drive to obtain her Doctorate of Veterinary Medicine at the University of Missouri- Columbia. After graduation in 1998, she moved to Canton, Illinois, where she practiced mixed animal medicine for six years. She joined our practice in 2004 and now practices exclusively with dogs and cats.

Dr. Myers has a special interest in integrative medicine, soft tissue surgery, and has advanced training in dentistry. She is certified in Acupuncture, Spinal Manipulation (Chiropractic), Herbal Medicine, and Food Therapy. She is very passionate about the addition of integrative medicine into our practice and loves to see the successful outcomes for our patients.

Dr Myers attends many local, regional, and continuing education meetings each year. She was president of the Illinois State Veterinary Medical Association in 2014-2015. (Paragraph continues on the same and ADD in at the end of the list: American Veterinary Holistic Association, and the Association of Veterinary Acupuncturists.

Dr Myers is married to Alan. They have two sons; Conner and Liam, a stepdaughter, Shaylee, and three grandchildren that keep them very busy and active. Their family also includes two Boston Terriers, three cats, three chinchillas, and four horses. She enjoys traveling, reading, running, and outdoor activities.

Michael E. Manthey, D.V.M.   

Veterinarians Dr. Manthey was raised on a cattle and crop farm near Wenona, Illinois, where he had a great appreciation for the work their veterinarian performed. Upon graduating from Peoria Christian School in 1999, he joined the U.S. Air Force. He served as a lab technologist in North Dakota for six years and then as an air traffic controller in Florida for four years. During his military career, he took college classes to achieve his goal of becoming a veterinarian. 

Following his military service in 2009, he pursued a career in veterinary medicine with a bachelor’s degree in biology from Illinois State University. He went on to earn a Doctorate of Veterinary Medicine from the University of Illinois in 2015. Dr. Manthey has special interest in cytology, ophthalmology, endoscopy, and various soft tissue and orthopedic surgical procedures. Dr. Manthey has advanced training in the TPLO procedure and is currently seeing patients for TPLO consults and surgeries.    

Dr. Manthey is a member of the Peoria County Veterinary Medical Association, the American Veterinary Medical Association, the American Animal Hospital Association, the Mississippi Valley Veterinary Medical Association, and the Illinois State Veterinary Medical Association.

He and his wife, Holly, are avid Cardinal and Illini fans. They have two sons, Nate and Caleb, who both enjoy sports, school, and spending time with the family pets: a rescued dachshund mix named Lily and a Brittany puppy named Rory. He enjoys spending time with Holly and their boys, going to University of Illinois sporting events, fishing, traveling, and attending family church activities.