Meet Our Team

Appointment
Dr. Brian Siever, DVM

Dr. Brian Siever, DVM

Veterinarian

At the age of 5 years old and after the loss of his own dog, Brian Siever decided he wanted to become a veterinarian when he grew up. Dr. Siever earned his Bachelor in Animal Science from the University of Illinois Champaign- Urbana before beginning Veterinary training at Royal Veterinary College in London, England. He then transferred to the University of Illinois College of Veterinary Medicine where he graduated in 1999 with his Doctorate of Veterinary Medicine. He met his wife, Cindy, while attending the U of I where she worked as an ER and ICU Veterinary Technician. Dr. Siever moved to Galesburg, Illinois where he started his Veterinary career at Knox Pet Clinic. He is a member of the Illinois State Veterinary Medical Association and the American Veterinary Medical Association.

Dr. Siever and Cindy were married on a beach in the Bahamas in 2000 and have 4 children, Rebecca, Alison, Griffin, Seth, and 2 grandchildren AJ and Maleah. The Siever family lives on a farm outside of Knoxville, Illinois where they enjoy gardening and raising farm animals including chickens and ducks. The family also has 2 indoor cats, 3 barn cats, and 4 dogs including 2 large Great Pyrenees dogs that guard the barn animals.

In his free time, Dr. Siever enjoys bike riding, shooting sports, woodworking and wire bending. He is also a member of Community Bible Church in Knoxville, Illinois.

Dr. Harold Watters, DVM

Dr. Harold Watters, DVM

Veterinarian

Dr. Watters began working at Knox Pet Clinic in June of 1969 after his discharge from the United States Army where he served as a Veterinary Corps Officer. Dr. Watters obtained his BS in Agriculture, BS in Veterinary Science and Doctorate in Veterinary Medicine from the University of Illinois, Urbana- Champaign. Dr. Watters has been married for 52 years to his wife Jeanne, R.N., who is retired from a career of pediatric nursing and home care agency administration. Dr. and Mrs. Watters have 4 children (3 girls and 1 boy), their vocations include high school world history teacher, high school Spanish language teacher, program director for church retreat center and camp, and national security intelligence officer. They also have 9 grandchildren (4 girls and 5 boys).

In his free time, Dr. Watters enjoys spending time with his grandchildren and friends, working on Rotary projects, conservation projects, farm work, traveling and gardening. Dr. and Mrs. Watters have hosted 18 Rotary exchange students for periods of 3 weeks to one year (mostly for 3-4 months). They have invitations to Europe, South America, and Africa to visit students who are now adults with families of their own. Dr. Watters is currently the Responsible Officer for Central States Rotary Youth Exchange Program, working as a volunteer with the U.S. Department of State facilitating visas and safety issues for over 200 foreign teen students each completing a year of high school study in Illinois, Indiana, Michigan, Wisconsin, Minnesota, South Dakota or Ontario, Canada.

Dr. Watters is a life member of the Illinois State Veterinary Medical Association and the American Veterinary Medical Association.

Dr. Megan Blackwell, DVM

Dr. Megan Blackwell, DVM

Veterinarian

In August 2009 Dr. Blackwell joined our staff at Knox Pet Clinic, she has her Bachelor degree in Animal Science as well as her B.S. Veterinary Science and her Doctorate of Veterinary Medicine all from the University of Illinois Urbana-Champaign.

Dr. Blackwell is originally from Lewistown, Illinois where she was a member of 4-H and FFA showing and judging livestock. Dr. Blackwell lives in Galesburg with her domestic shorthair cat, Mia. In her free time, Dr. Blackwell enjoys traveling and shopping.

Dr. Blackwell is a member of the American Veterinary Medical Association and the Illinois State Veterinary Medical Association.

Dr. Josephine Swanson, DVM

Dr. Josephine Swanson, DVM

Veterinarian

Dr. Swanson is a native of the Quad Cities where she attended Augustana College and received her Bachelors in Biology. She then attended the University of Illinois where she completed her Doctorate in Veterinary Medicine.

From a young age, Dr. Swanson loved animals. She wanted to be a vet so she could not only help animals but also help owners learn more about their pets and to provide the best possible care for them. What she finds most interesting is the variety of animals, in addition to seeing cats and dogs, Dr. Swanson does basic health checks on exotics and pocket pets.

Dr. Swanson enjoys spending time with her family including a huge extended family, a brother, and sister, a brother-in-law and a niece and nephew. She also enjoys watching movies and visiting historical sites. Dr. Swanson has a terrier mix, Wally, who is pictured with her here.

Nicole Giza

Nicole Giza

Human Resources Manager and Online Presence/Social Media Manager

Nicole has been with Knox Pet Clinic since September 2015 starting as a receptionist and now working as the Human Resources Manager and Online Presence and Social Media Manager. Nicole grew up in southeast Wisconsin and lived on a small farm raising pigs for 4-H, a calf, horses, dogs, and a handful of barn cats. She attended college in Estes Park, Colorado and moved to Illinois in 2008. Nicole lives in Galesburg with her husband Ben and their kids, Marley and Liam. They share their home with their German Shepherds Annie & Mose and a domestic long hair kitty named Ariel. In her free time, she enjoys spending time with her family, DIY projects, and watching reality television.
Jean Bird

Jean Bird

Receptionist

Jean joined Knox Pet Clinic in July 2017 as a part-time receptionist. Jean has her BA in Music from Elmhurst College and MS in Counseling and Student Personnel from Oklahoma State. Jean lives in Knoxville with her daughters, Mikayla and Teagan. The family also includes 3 pets: Ellie, a Treeing Walker Coonhound; Flashy, a black domestic short hair cat; and Oreo, a black domestic shorthair cat. In her free time Jean enjoys singing at her church, reading, playing board games with her daughters, playing with Ellie, and relaxing with Flashy and Oreo.
Sonya Gruntkowski, CVT

Sonya Gruntkowski, CVT

Veterinary Technician

Sonya has been serving as a Certified Veterinary Technician at Knox Pet Clinic since December 2010. Sonya attended Stautzenberger College in Ohio, which is where she is originally from and where her family still lives. Sonya lives in Knoxville with her boyfriend Jason, Kasinda a Yorkie mix, and Simon a domestic short hair. In her free time Sonya enjoys reading, music, and movies.
Jackie Derham, CVT

Jackie Derham, CVT

Receptionist

Jackie has been employed at Knox Pet Clinic since October 1988. Jackie attended high school at Knoxville High School and then she attended Carl Sandburg before going to Parkland College to get her Veterinary Technician certification. Jackie has a beautiful Golden Retriever named Shea. In her free time, Jackie enjoys reading, cross stitching, and lawn work.
Jenn Robbins, CVT

Jenn Robbins, CVT

Veterinary Technician

Jenn joined our team as a Certified Veterinary Technician in February 2016. Jenn received her Bachelor of Arts from Eastern Illinois University in Charleston, Illinois and her Associates of Applied Science in Veterinary Technology at Parkland College in Champaign, Illinois. Jenn lives in Galesburg, Illinois with Ryan and their son Konrad as well as a tuxedo cat named Sylvester. In her free time, Jenn enjoys being outside, playing sports including volleyball, softball and jogging, and spending time with her family.
Emily Hensley

Emily Hensley

Veterinary Assistant

Emily joined our team in August of 2009 working part time as a receptionist and is now a veterinary Assistant working with the technicians and doctors. Emily attended Carl Sandburg College and has her Associates in science as well as her cosmetology license. Emily has been married to her husband Adam for 8 years and they have 3 children, Adam Jr, Mavrick, and Danika. Emily’s family also has 5 fur members: cats Jax and Josie, Layla a Labrador/German Shepherd mix, Mocha a Labrador mix, and Mikey a Boxer puppy. In her free time Emily enjoys being outside and playing with her kids, writing, and drawing.
Tiffany Kelly

Tiffany Kelly

Animal Care Assistant

Tiffany started working at Knox Pet Clinic in October of 2014 as an animal care assistant. She is a graduate of Galesburg High School where she now works full-time as a paraprofessional. Tiffany also attended Carl Sandburg College and is a Certified Nursing Assistant and plans to attend again starting this fall to begin studying to become a Veterinary Technician. Tiffany lives in Knoxville, Illinois with her husband TJ and son Ryan. They have 3 cats (Snugglebug, Snowflake, and Hunter) 5 Dachshund (Snoop, Sport, Ted-e-bear, Sparkles, and Louis) and 2 ferrets (Daisy and Minnie). Tiffany spends her free time with her family and fur babies.
Ventura Stinson

Ventura Stinson

Housekeeping

Ventura has been on staff since March 2003 and is an important, yet often unseen, member of Knox Pet Clinic’s team. Ventura performs many housekeeping task as well as maintains the yard and plants around the clinic. Ventura lives in Galesburg with her husband David and they have a daughter, Andrea. They also have 1 Husky (Roscoe, pictured here) and 4 domestic shorthair cats. In her free time, she enjoys gardening, yard work, and antique shopping. Ventura loves being around animals and helping.
Katie Ross

Katie Ross

Groomer

Katie has been with Knox Pet Clinic since August of 2015. Katie does morning kennels (feeding pets, cleaning kennels, and walking pets) in addition to grooming. Katie studied theater and music and human services at Carl Sandburg College. Katie lives with her husband, Aaron, and their 5 fur babies; Hendrix (Corgi mix), Jasper (orange tom cat), Lily (Himalayan), Paisley (Corgi/Chihuahua mix), and Theo (gray striped tom cat). In her free time, Katie enjoys watching movies, reading books, and spending time with her husband and pets. Katie’s favorite things are dancing and animals! A little fun fact, her name is Mary Kathryn but she always goes by Katie.
Cindy Siever, CVT

Cindy Siever, CVT

Office Manager

Cindy joined the staff at Knox Pet Clinic in June of 1999, she is currently the office manager handling the business and fiscal part of the practice. She is a graduate of Jefferson College in Hillsboro, Missouri where she received her AAS and Certified Veterinary Technician degree. Cindy was working at University of Illinois Champaign-Urbana as an ER and ICU vet tech when she met Dr. Siever who was there studying to become a veterinarian. Cindy is also an International Board Certified Lactation Consultant (IBCLC) and owner of Baby LeLe Breastfeeding Resource Center, offering consultations, clothing and breastfeeding accessories. Cindy and Dr. Siever have 4 children, Becca, Alison, Griffin, and Seth and 2 grandchildren AJ and Maleah. The Siever family lives on a farm outside of Knoxville, Illinois where they enjoy gardening and raising farm animals including chickens, ducks, and goats. The family also has 2 indoor cats, 3 barn cats, and 4 dogs including 2 large Great Pyrenees dogs that guard the barn animals. In her free time Cindy enjoys reading, sewing, and spending time with her family.
Liana Siegel

Liana Siegel

Receptionist

Liana earned her Associates in Accounting from Carl Sandburg College and attended Animal Behavior College for Dog Training and is ABC Certified. She shares her home with her husband Thomas, German Shepherds Heidi and Ahanna, a Rat Terrier named peanut, and her shorthair cat, Nyx. Liana has a daughter, Sabrina, and two granddaughters, Athena and Lilyan. In her free time, she enjoys: reading, gardening, working out, doing puzzles, watching movies, and beekeeping. Liana uses items grown in her garden as well as bee’s wax and other natural items to make herbal holistic healing products.
Abby Greenlief

Abby Greenlief

Receptionist

Abby joined our team as a receptionist last winter after graduating early from United High School. Abby has a yellow lab, Chance, who she just adores. She comes from a large family with 4 sibling and a niece as well as more family pets. Abby is currently taking classes at Carl Sandburg to pursue a nursing degree. When she isn’t working or at school Abby enjoys cooking and baking, shopping, and taking Chance for walks.
Logen Hendricks

Logen Hendricks

Veterinary Technician

Logen did two internships with us while she attended Black Hawk College to earn her Associates in Applied Science in Veterinary Technology. After she graduated in the spring of 2019 joined our team as a permanent member. Logen has a yellow lab, Tequila that she’s had since she was a puppy. She enjoys being outdoors, working out, and spending time with her family.
Tristen Rickard

Tristen Rickard

Animal Care Assistant

Tristen joined us in the fall of 2019 as an Animal Care Assistant. She’s a senior at Knoxville High School and on track to graduate early. Tristen loves animals and is looking into her options to continue to work with them after high school. She has a number of animals including cats, dogs, chickens, a lizard and even a pig! She enjoys reading, watching tv/movies, swimming and spending time with her friends.
We have two awesome locations for your convenience!

Galesburg

Knox Pet Clinic

658 W Main St
Galesburg, IL 61401
309-343-6156

Hours

Mon-Fri7:30am - 5:00pm
Sat8:00am - 12:00pm
SunClosed

Knoxville

Knox Pet Clinic - Knoxville

105 North Public Square
Knoxville, IL 61448
309-289-6697

Hours

Mon: 8:00am - 4:00pm
Tues: 8:00am - 4:00pm
Thurs:8:00am - 4:00pm

If you are experiencing an after-hours emergency, please call 309-342-1759
Send us a message!

If you have a question, you can complete the form below and a member of our team will get back to you as quickly as possible.