Mackenzie Vermey, DVM

Veterinarian, Practice Owner, Medical Director

For her entire life, Dr. Mackenzie Vermey has always wanted to be a veterinarian. She was born and raised in New Berlin, WI and from an early age expressed an interest in anything pertaining to animals and science. She received her doctorate of veterinary medicine from graduated from the University of Wisconsin-Madison School of Veterinary Medicine in 2012. As of January 2017 she has become the new owner and medical director of Animal Clinic in Sussex. She brings with her 18 years of experience in the veterinary profession. Although she will tell you she absolutely loves every aspect of her career, some of her professional interests include ophthalmology, internal medicine, and surgery.
Dr. Mackenzie and her husband, Jason, share their home with two coonhounds- June and Earl, as well as their horse, Gaston. Her interests outside of work are running with her dogs, camping, hiking, kayaking, swimming and horseback riding. She is very excited to provide the highest quality of medicine to her patients and looks forward to the future!

Jennifer Cortright, DVM


Dr. Jennifer Cortright graduated from the University of Illinois in 2000 and joined the Animal Clinic in Sussex in 2009. Dr. Jennifer enjoys soft tissue surgery, dentistry and a special interest in ultrasound. She became certified in small animal ultrasound through completion of the University of Illinois’ Executive Veterinary Program in 2012. The Cortrights share their Wauwatosa home with their cats and look forward to a day soon when they will again welcome a big dog.

Rachael Favero, DVM


Dr. Rachael is originally from New Berlin and has lived in Wisconsin her whole life. She is 2000 graduate of The University of Wisconsin School of Veterinary medicine and has a special interest in dermatology and internal medicine. In her free time, she enjoys riding her horse, "Denver", gardening, traveling to tropically warm climates and reading historical fiction & non-fiction on her Kindle.

She and her husband have been lifelong pet owners and believe that a pet really becomes an integral part of your family. Dr. Rachael believes in encouraging all pet owners to take an active role in the health and well-being of their pets. She is very much looking forward to getting to know both you and your pets as well as continuing to support their happy, long and healthy lives.

Technical Support Team

Denise, CVT

Support Team

Denise has been a certified technician for over 20 years and has been working part time with the Animal Clinic in Sussex since 2004. She enjoys assisting the doctors with patients in the exam rooms and educating clients on preventive care. When not working here, you will find her working on her family dairy farm and spending time with family. She has 2 dogs, and a herd of dairy cows and calves.

Jerusha, CVT

Support Team

Jerusha has worked in the animal field for 10 years, ranging from shelter work to specialty practice and has been with the Animal Clinic in Sussex since 2016. She graduated from the Madison Area Technical College last year and became a certified technician. In her spare time she enjoys spending time with her fiancé (husband in June!) and Dachshund Harriet. They love spending time outdoors; especially fishing and hiking. She has also been dancing since she was three years old, and now teaches hip-hop and jazz at her family’s dance studio.


Support Team

April has been in the veterinary field for over 10 years and has been with the Animal Clinic in Sussex since 2009. She enjoys caring for pets and educating clients about the best care for their companions. Her hobbies include horseback riding, sports, and especially taking her dogs on long hikes.

Britt, CVT

Support Team

Britt has been with Animal Clinic in Sussex since 2010. She is a 2006 graduate of Madison Area Technical College's Veterinary Technician program. She enjoys surgery and being a part of a team that works together every day to keep pets healthy and happy.

In her free time, Britt enjoys the great outdoors. Hiking, kayaking, gardening and walking her dogs are some of her favorites.

Meghan, CVT

Support Team

Meghan has been with Animal Clinic in Sussex since July 2018. She obtained a BS in animal science from University of Wisconsin Madison in 2011 and her Veterinary Technician Certificate from MATC in 2013. Meghan enjoys being there for pet owners; answering their questions/concerns and being able to provide their pets with quality care. In her free time, Meghan enjoys spending time with her family, painting, decorating cookies, scrapbooking and spending time outdoors.

Shelly, CVT

Support Team

Shelly has worked in the veterinary field for over 10 years and has been a certified veterinary technician for 6 years and has been with the Animal Clinic in Sussex since 2017. She has experience in emergency and critical care, as well as the diverse care of day practice, where she has found the most enjoyment. In her spare time she enjoys spending time with her family, 2 cats and the love of her life, her border collie Jack. In her spare time she likes to go camping and hiking together and also volunteering her time with various rescue groups.


Support Team

Keena graduated from the Veterinary Technician program at Gateway Technical College in May 2017 and has been with the Animal Clinic in Sussex since 2017. Keena enjoys preventative care and forming bonds with clients and their pets. When not working, she especially loves taking her Rottweiler mix, Rocky, to the dog park. She also likes spending time outdoors, hiking and relaxing at her family lake home.

Client Service Specialists


Client Service

Michele started working with the Animal Clinic in Sussex in 2004. Sharing the love of animals with our clients is what brings her to work. Her hobbies include spending time with her family and cats, walking her dogs, and reading.


Client Service

Nancy started with the Animal Clinic in Sussex in 2006. She enjoys talking to clients and snuggling the pets. Her hobbies include cooking, fishing, camping, boating and dancing. She has one dog, Georgia.


Client Service

Wendy had been a long client before she joined Animal Clinic in Sussex in 2004. She enjoys helping owners and their pets. Her hobbies include reading, crocheting and making jewelry. She also enjoys spending time with her dogs.




Kim Walker has been gooming for 11 years and is a graduate of the School of Professional Pet Grooming, graduating in 2007. She also has a Bachelor of Science in Exercise Science with a minor in Sports Nutrition. She offers grooming for a vast variety of breeds and many different lengths of haircuts, as well as styles. Her emphasis is on quality and she puts forth maximum effort to give your furry family member the best haircut possible! She has a 13 year old Siberian Husky named Samuel who means the world to her and her husband Chad. She enjoys spending time together as a family, especially going on walks and/or hikes. She is also very devoted to fitness and health and has experience with long distance running and is actively training in Olympic weight lifting.



My name is Krystal. I've had a lifelong passion of making animals look and feel great. I grew up around many different kinds of animals ranging from reptiles to cats and dogs, which sparked my passion to work with pets. I graduated in 2015 from Globe University with an associates degree in applied science-veterinary technology to become a certified veterinary technician. I also have been solely grooming for one year and taking courses through Animal Behavior College to sharpen my grooming skills. In my spare time I enjoy spending time with my two cats Griffin (Maine Coon mix) and Buttercup (DSH tortie) and my boyfriend John.