Dr. Josh Miller

Dr. Josh Miller, DVM - Owner

Years In Practice: 20
Education: Bowling Green State University / The Ohio State University

After graduating from The Ohio State University College of Veterinary Medicine in 1999, Dr. Josh spent a year working at a mixed animal practice. In 2000, Dr. Josh then joined his father, Dr. Steve Miller, at Covenant Animal Clinic. His father started this practice in 1972. Dr. Josh practiced in Waynesville and then moved the practice to Bellbrook in 2012 with Dr. JK. Dr. Josh has a passion for surgery and enjoys the challenge of both soft tissue and orthopedic procedures. He also enjoys building life-long relationships with his clients. He lives in Centerville with his wife, Nikki, and two children. He enjoys the outdoors, sports, playing music, and riding anything with two wheels. Dr. Josh has a long-haired Chihuahua named Lily Bean and an Austrailian shepherd named Ozzy.

Centerville Location: Tuesday & Friday | Bellbrook Location: Monday & Wednesday

Dr. J.K. Guarasci

Dr. J.K. Guarasci, DVM - Owner

Years In Practice: 10
Education: The Ohio State University

Dr. JK grew up in Centerville where he graduated from Centerville High School and went on to The Ohio State University for both his undergraduate program and veterinary school. Upon graduating from the College of Veterinary Medicine, he joined his father in practice before joining Covenant Animal Clinic and establishing the Bellbrook location in 2012, and now the Centerville location in 2020. Dr. JK enjoys playing golf, loves the Buckeyes, and learning craft beers. He and his wife, CJ, have two children, Jacob and Lexi, who are very involved in sports, school and their friends.

Centerville Location: Monday & Thursday | Bellbrook Location: Tuesday & Friday

Dr. Jessica Wells

Dr. Jessica Wells, DVM

Years In Practice: 5
Education: The Ohio State University

A Bellbrook native and Bellbrook High School graduate, Dr. Jessica Wells is a 2014 graduate of The Ohio State University College of Veterinary Medicine. She also has a master’s degree in veterinary public health from Ohio State. She loves spending her time in surgery (there is no better feeling than successfully removing a foreign object from the GI tract!), and thrives for caring for pets and their families in emergency situations. Dr. Wells also enjoys teaching, whether it be client education, training staff, or participating in area school Career Days. Dr. Wells is a member of the American Veterinary Medical Association and the Ohio Veterinary Medical Association. Dr. Wells lives in Washington Township with her husband, Scott, and two young sons. She can usually be found spending her free time outdoors with her family. She has two cats, Moose and Birdie.

Centerville Location: Wednesday | Bellbrook Location: Thursday & Friday

Lisa Fannin - Practice Manager

Lisa Fannin - Practice Manager

Lisa Fannin is the practice manager at our Centerville location. She came to Covenant in August of 2019 but has been in the veterinary field for 24 years. She has three children and a dog named Ellie. She enjoys spending time with her family outdoors on their farm in Kentucky riding ATVs.

Amy - Registered Veterinary Technician


Registered Veterinary Technician

After relocating to Dayton from Colorado, we had the privilege of working with Amy during her studies at Sinclair Community College. Upon graduation from the Veterinary Technology program in 2018, we knew we needed her on our team. When not working with your pets, Amy likes to spend time outdoors, hiking, kayaking, and camping with her significant other, Corey, and their pets, Rylee, Bubbas, Benji, and Kerby.

Ashley - Veterinary Technician


Registered Veterinary Technician

Ashley graduated from Sinclair Community College in 2016 with a degree in Veterinary Technology and phlebotomist certification. That makes 3 ½ years that she’s spent with Covenant. She has two teacup Chihuahuas and a Siberian husky. Ashley really enjoys assisting with dental procedures and has several other responsibilities in the clinic.

Cassie - Registered Veterinary Technician


Registered Veterinary Technician

Cassie graduated from Sinclair Community College in 2016 with a degree in Veterinary Technology. She then worked at the Dayton Care Center as an emergency technician for three years before deciding to join our team. She especially loves orthopedics and working with senior animals. She and her husband live locally with a very old mastiff, Marley, and two crazy cats, Stanley and Penelope. She also loves reading, drawing, and pretty much anything outdoors.

Colleen - Veterinary Assistant


Veterinary Assistant

Colleen graduated from the University of Findlay in 2019 with a Bachelor of Science degree in Animal Science with a pre-veterinary medicine emphasis. She is currently applying to veterinary colleges and plans on getting her master’s degree in Veterinary Public Health, as well.

Courtney - Receptionist



Courtney has been a long-time client of Covenant Animal Clinic and now works at our front desk as a receptionist. She also works full-time at Dorothy Lane Market. In 2014, she graduated from Wright State University with a Bachelor of Science degree. In her free time, she volunteers at 4 Paws for Ability helping train future service dogs. Courtney has a Chihuahua named CJ.

Erica - Registered Veterinary Technician


Registered Veterinary Technician

Erica is one of our new registered veterinary technicians. She graduated from the Sinclair Vet Tech program in May 2019 after getting her Bachelor’s in Biology at Northern Illinois University. She recently passed her VTNE in August 2019 and is looking to better herself in a small animal practice like Covenant. She has interests to maybe move onto a Zoology specialty in the future. In her free time, she enjoys hiking with her husband and hanging out with her 9 year old Saint Bernard, Zoey, and two black cats, Gypsy and Token.

Heather - Registered Veterinary Technician


Registered Veterinary Technician

Heather graduated from the Columbus State Vet Tech program in 2002 and joined our practice in May of 2019. In her “free time,” she is a full-time Soccer Mom and aspires to finish a Pinterest project or two. Heather resides in Franklin with her Husband, Jason, and two daughters, Kendall and Morgan. They also live with two dogs, Oakley and Toffee, two cats, Noel and Autumn, and several other critters that their daughters talked her into keeping.

Jane - Registered Veterinary Technician


Registered Veterinary Technician

Jane graduated in 2015 from Sinclair Community College with a degree in Veterinary Technology. In her free time, she loves to spend time outdoors, read, and hang out with friends and family. She shares her home with her husband, Erik, two black cats, Andy and Buzz, and a miniature dachshund, Slinky.

Joy - Receptionist



Joy is one of our Bellbrook receptionists and office manager. She has been with Covenant for 13 years. She will likely answer the phone when you call and is always there to welcome you and handle your questions. Joy lives in Wilmington with her husband, Steve. They have a pitbull named Kelsey and a number of hunting dogs.

Marilee - Registered Veterinary Technician


Registered Veterinary Technician

Marilee joined the Covenant team in 2018 after graduating from Sinclair’s Veterinary Technology program in 2016. She truly loves assisting with surgical procedures. Marilee has a Great Dane named Dexter and an array of foster pets. She and her husband enjoy spending time outdoors and giving animals a second chance at a loving home.

Nora - Registered Veterinary Technician


Registered Veterinary Technician

Nora is a 2017 graduate of the Sinclair Community College Veterinary Technology program. She has been a Covenant Animal Clinic technician from the day she graduated from the program. Nora really enjoys placing IV catheters and assisting in surgeries, especially aural hematoma repairs and femoral head osteotomies. When not at work, she enjoys reading, watching Netflix, traveling, and spending time with family and friends. Nora and her partner, Justin, live in Kettering with their beagle Maci, Lab mix Michelob, and two cats, Spencer Reid & Dembe.

Olivia - Veterinary Assistant


Veterinary Assistant

Olivia is currently enrolled in Penn Foster College’s Veterinary Technician program. While she is pursuing her degree, she is excited to be assisting technicians and veterinarians here in the clinic. She recently moved from Vashon Island, Washington, with her husband, Connor, and their two adorable cats, Felix and Prim. In her spare time, she enjoys backpacking, kayaking, horseback riding, and playing her bass guitar.

Paris - Veterinary Assistant


Veterinary Assistant

Paris grew up moving around the country with her military family. She moved to Centerville in 2017 where she started her schooling journey towards her goal of becoming a veterinary technician. Her long-term goal is to go back to school and receive her Bachelor’s degree in Zoological Veterinary Technology. Paris enjoys riding horses and relaxing at home with her significant other, Kevin, their dog, Boomer, and three Guinea pigs, Charlie, Sonic, and Peanut.

William - Registered Veterinary Technician



Will came to us in August 2019 from Care Center. His love for animals and passion for people have been lifelong, and the front desk provides the best of both worlds for him. Will graduated from Wright State University in 2016 with his BFA. In his free time, Will loves spending time on the couch and going on hikes with his significant other, Nate, and their Frenchie, Larry. Pictured is his goofy cat, Dexter.