Meet Our Staff


Dr. Maggie Wilson
Owner and Veterinarian

Maggie Wilson

Dr. Maggie Wilson (Aleff) was born and raised in Knoxville, Iowa where she first developed her love for animals.  She was active in local 4-H and is a former graduate of the Knoxville High School (Class of 2001). Following graduation, she went on to earn first her Bachelor’s Degree, and then her Doctorate in Veterinary Medicine from Iowa State University in 2009.

Dr. Wilson started her veterinary career at the Knoxville Veterinary Clinic working as an associate for Dr. Craig Burk in 2009. In 2010 she married her husband Jeff, and they moved to Western Iowa where Dr. Wilson continued to practice first mixed animal, and then small animal only medicine while further developing her skills as a practitioner.

In March of 2018, Dr. Wilson and her husband Jeff had the opportunity to move back to Knoxville and purchased the Knoxville Veterinary Clinic from her former mentor, Dr. Craig Burk.  They were overjoyed at the opportunity to return to Knoxville with their two children, Collin, and Courtney.

Professionally, Dr. Wilson has a special interest in internal medicine, dentistry, and soft tissue surgery. She is also a Fear Free Certified Practitioner who takes pride in providing her patients with positive experiences while at the vet’s office.

In her free time, Dr. Wilson enjoys spending time with her family and her pets. The Wilson’s have 2 energetic dogs Izzy and Herman, and a lovable elderly cat named Crazy.

Support Staff

Maria Casal Dowell
Veterinary Assistant

Maria Casal Dowell

Maria has been working at Knoxville Veterinary Clinic as a veterinary assistant since December of 2017. She was born in Argentina and moved to Iowa after marrying her husband Derek who is from Iowa. Maria and Derek reside in Leighton with their two dogs, Brutus and Aspen, and their two miniature goats, Phil and Gilbert.

Maria is currently attending Penn Foster working towards her veterinary technician degree after already having obtained her veterinary assistant certification.

Joslyn DeGoey
Veterinary Assistant

Joslyn DeGoey

Joslyn has been working as a veterinary assistant at Knoxville Veterinary Clinic since June of 2017. She is currently enrolled in the Penn Foster Veterinary Technician Program working towards becoming a certified veterinary technician.

Joslyn has two young children, a son named Ryker and a son named Owen. She also has two dogs, a chocolate lab named Ruger and a black lab mix named Case.

In her spare time, Joslyn enjoys spending time with her kids camping, fishing, riding four-wheelers, swimming, and going sprint car racing.

Donna Flattery
CVT, Dog Trainer

Donna  Flattery

Donna is a Certified Veterinary Technician who has been with the Knoxville Veterinary Clinic since 1980. Donna graduated from North East Missouri State University with her Certificate in Veterinary Technology in 1980. After graduation, she began working at the Knoxville Veterinary Clinic, which first served both large and small animals. Through the years, the clinic has transformed into a pet exclusive practice.

In 2010, Donna completed an on-line Dog Trainer course and earned her Professional Dog Trainer Certification in 2015.  She really enjoys working with owners and their pets to help teams address behavior issues, teach basic training, and acquire Canine Good Citizen certification.  Most recently Donna completed her on-line course work to become a Fear Free Certified Professional, and she plans to complete the Fear Free Dog Trainer certification by next year.

Donna is married to Jerry Flatter, who works at 3-M in Knoxville. They have three children; Robin teaches High School English in Washington, IA, Matt works at Skunk River Pallet in Pella, IA, and Brad works at 3-M in Knoxville, Iowa.  Donna also has 2 dogs and 3 cats at home. ‘Chubbs’ is a rambunctious senior lab and ‘Sybil’ is a bossy Border Collie mix. Their three cats that like to hang out in the garage are Mitt, Pong, and Kevin. There is never a shortage of paw prints on vehicles in the Flattery home.

In her free time, Donna enjoys reading, exercising, trying new recipes, training dogs, and spending time with her family and friends.

Sherry Turner
Office Manager

Sherry  Turner

Sherry is our office manager and has been employed at Knoxville Veterinary Clinic since 2017. She is originally from Knoxville and has always had a passion for animals. She graduated from Knoxville High School in 1981 and married her high school sweetheart, Mike Turner, who works as a Maintenance Engineer at 3M in Knoxville. Sherry attended college at both Simpson and DMACC while working full time.

Sherry and Mike have 2 children, Jared and Amy. Jared married to his wife Autumn and he works as a Mechanical Engineer at Vermeers in Pella. Amy graduated from ISU with her Bachelors in Animal Science and currently works at the USDA lab in Ames, Iowa.

In her free time, Sherry enjoys spending time with family and friends, traveling, and riding horses. Sherry and Mike have 9 horses, 9 goats, 3 cats and 2 dogs which keep them quite busy.

Nancy Vander Veer

Nancy  Vander Veer

Nancy has been working at the Knoxville Veterinary Clinic since 2007. She graduated from Knoxville High School in 1982 and then attended Ozark Christian College in Joplin, Missouri. After college, Nancy married Joe VanderVeer and together they have 3 children.

Their oldest daughter, Stephanie married to her husband Dustin and now works at Merchants Bonding in Des Moines, Iowa. Their middle son Craig lives at home with Nancy and Joe.  Bennett graduated from Knoxville High School in May of 2016 and currently attends Iowa State University.

In addition to her family, Nancy has a house full of pets. Currently, she has three dogs named Penny, Bernie, and Charlie. Nancy also has three cats named Bug, Midge, and Eggs. When Nancy is not busy working as our receptionist, she enjoys spending time with family and friends, reading, sewing, and traveling to Florida.

Hunter McCullough

Hunter  McCullough

Hunter recently joined the Knoxville Veterinary Clinic team in June of 2018. Hunter brings with her 1 ½ years of professional grooming experience, specializing in all breeds of dogs as well as cats. Hunter graduated from Knoxville High School in 2014 and then went on to earn her Associates Degree in Agricultural Business from DMACC in 2016. Hunter then went on to attend a grooming academy to learn her trade.

When she is not at the clinic making pets look great, she enjoys hanging out with her own furry babies. At home, Hunter has two dogs, one polydactyl cat, and four horses.