Our Team

Meet the team of professionals that will be taking care of your pets!

Meet The Team

Sadie Sandstrom

Managing DVM

Alyssa Ellinghuysen

DVM

Sonja Wiersma

DVM

Emily Ignatiev

Practice Manager

Sara Lamberta

Certified Veterinary Technician

Gretchen Raddatz

Certified Dog Trainer, Staff Lead, and Customer Service Representative

Jenna Finch

Veterinary Technician Assistant and Staff Lead

Abby Roff

Veterinary Technician Assistant

Marina Leider

Veterinary Technician Assistant

Sadie Sandstrom

Managing DVM

Dr. Sadie joined our team in 2018. She grew up in rural Ellsworth, WI, where she spent most of her days playing doctor to her family’s pride of barn cats, dogs, and occasional calves. Starting at a young age, Dr. Sadie knew she wanted to provide care for animals and help families establish life long care of their pets. She completed her undergraduate degree at the University of Wisconsin-River Falls and obtained her Doctorate of Veterinary Medicine from the University of Minnesota.

Over the years of handling animals, Dr. Sadie has learned how each one is different, leading her to strive to make veterinary visits for her patients, especially felines, less stressful for them and their families. Discussing early detection of diseases while helping clients provide a good quality of life at home for the pet is important to Dr. Sadie. Also, being able to help our furry friends pass with dignity and respect when the time is right is also very important to her. Dr. Sadie loves being a doctor at Somerset Animal Hospital and educating clients while providing a safe and comfortable environment for pet owners to express their concerns and discuss difficult decisions. Of course, Dr. Sadie loves when clients show off the new tricks their pets have learned!

In her personal time, Dr. Sadie spends time with her 8 cats, 2 bearded dragons, ball python, mouse, and of course her spouse and 2 children. She enjoys gardening, although she is not as successful as caring for plants as she is animals, as well as playing video games and attending local renaissance festivals.

Alyssa Ellinghuysen

DVM

Dr. Alyssa joined our team in 2023. She grew up in rural Altura, Minnesota, where she was privileged to run wild on her grandparents’ dairy farm.

She was active in 4-H where she showed her Shetland sheepdog, Cody, in obedience and agility at the county and state levels. The relationships she fostered with her dog, a multitude of cats, and her grandparents’ farm animals lead her to choosing a career in veterinary medicine to help others grow and maintain their bond with their pets.

She completed her undergraduate and Doctorate of Veterinary Medicine degrees at the University of Minnesota. Dr. Alyssa is excited to join the Somerset team as an associate veterinarian.

She has special interests in preventative medicine, nutrition, surgery, and anything feline related! She hopes to be a trusted resource for clients and their pets.

She loves hearing the stories behind unique names and guessing what breeds pets are mixed with. In her free time, Dr. Alyssa enjoys hiking, true crime documentaries, bad reality TV, and reading. She hopes to travel to all the US national parks and visit amusement parks housing world-record holding roller coasters along the way.

She also loves playing video games and going to concerts. She lives with her 2 cats, Beckett and Flare, and her partner, who is an avid baseball fan and coach. She hopes to branch out into the daunting world of puppy ownership in the near future.

Sonja Wiersma

DVM

Dr. Sonja joined our team in November 2012. She graduated from the University of Wisconsin-River Falls in 2005. Afterward, she attended Iowa State University, College of Veterinary Medicine, and received her DVM license. Dr. Sonja’s special interests include behavior, surgery, dentistry, pain management, and preventative medicine.

Like most in veterinary medicine, she loves animals, but Dr. Sonja’s inspiration came from when she took her first cat to the vet’s office. At the age of 7, she remembers how the veterinarian took time to answer all of her questions about Tootsie. Even though Tootsie didn’t make it through his illness, she will never forget the vet’s care and compassion for her and Tootsie. Dr. Sonja wanted to make a difference for others the way he had for her.

Outside of the clinic, she enjoys spending time with family and friends, camping, gardening, and reading. She shares her time with her husband, Brent; dog, Booth; cats (Munchkin and Tristan); and lots of chickens.

Sara Lamberta

Certified Veterinary Technician

Sara joined the Somerset Animal Hospital team in September of 2020. When you come to the clinic for boosters, nail trims, analgland expressions, and ear checks that it’s not necessary to see a doctor, you will most likely be working with Sara. She graduated from the Minnesota School of Business/Globe College Veterinary Technician Program in 2010 and earned her CVT certification that same year.

Sara currently resides in North Hudson and shares her home with her husband, three children, and four cats. When Sara is not working she enjoys being outdoors, crafting, camping, gaming, and generally relaxing.

Gretchen Raddatz

Certified Dog Trainer, Staff Lead, and Customer Service Representative

Gretchen has been part of the Somerset Animal Hospital team since August 2017. She is currently our main receptionist and one of our staff leads. She is also a 2015 graduate of Animal Behavior College, where she obtained certification as a dog trainer. She is also certified in The Human Animal Bond. Gretchen has been a great addition to the team and resource for our clients and patients to help answer any canine behavior or training questions.

Besides working at the clinic, Gretchen works at a local dairy farm caring for the calves and currently owns and operates her own training and boarding business, Raddatz Training Services. When she is not working or training dogs, she loves to be outside either on a hike with her dogs, horseback riding, jet skiing, or snowmobiling. Of course, she spends free time with her array of pets including 3 dogs, a horse, 3 koi fish and multiple indoor and outdoor cats. She also opens up her home to boarding and training clients as well as foster dogs needing a second chance and training.

Jenna Finch

Veterinary Technician Assistant and Staff Lead

Jenna joined our team in November 2019 as a Veterinary Assistant and in February, 2023 she became a staff lead. Jenna loves surgery and dentistry, and when you drop your pet off for a surgery or dental procedure she is the Lead Technician overseeing their care. She also has a couple side roles in the clinic as well. Including auditing and tracking our controlled substances and being our clinic’s unofficial event planner.

Jenna grew up in the historic town of Stillwater, MN. She graduated from Century College with an associate degree in Liberal Arts in December 2020. In January of 2022, she joined the Penn Foster Vet Tech program and is working towards becoming a Certified Veterinary Technician (CVT).

Jenna is currently a local resident in Somerset, WI. Jenna and her husband share their home with her dogs, Nina and Nash, and five cats, Roxas, Odin, Maui, Kaede, and Autumn. When she is not at work, Jenna can be found doing homework, swimming in her pool, hanging with her husband and pets, or gaming!

Jenna says her favorite part about working at Somerset Animal Hospital is being able to help animals and meet new people every day!

Abby Roff

Veterinary Technician Assistant

Abby started at Somerset Animal Hospital in November 2020 as a Receptionist. In July of 2021 Abby started training as a Veterinary Technician Assistant and in February 2022 she started school at Penn Foster to become a Certified Veterinary Technician (CVT).

Abby can be found in every part of the clinic. Whether it be at the front desk, assisting in appointments, monitoring during surgery, or taking on administrative tasks, she is constantly looking for ways to help improve our clinic.

Outside of the clinic, Abby enjoys spending time with her Labrador, Roxi and 10 feline fur-babies, or out and about spending time with her family and friends.

Marina Leider

Veterinary Assistant

At our clinic, Marina is one of our main Dental and Surgery Technicians. Marina graduated with a BS in Animal Science with an equine and dairy science emphasis from UWRF in May of 2018. She spent 2 years post-grad in the Ag nutrition industry before joining our team at Somerset Animal Hospital in April of 2021. In January of 2022, she joined the Penn Foster Vet Tech program to become a Certified Veterinary Technician (CVT).

Marina grew up in Manitowoc, WI. In her free time she likes to barrel race her two horses, bowfish and ride dirt bikes with her husband, kayak with her two labs, and snuggle with her daughter and four cats. She also plays on an adult softball team in the summer!

Sofia Zecca

Veterinary Technician Assistant

Bio coming soon!

Ella Thomas

Kennel Assistant

Ella Joined our team in June of 2022 as a part time Kennel Assistant. She grew up most of her life in rural Osceola, WI, on 11 acres with dogs, cats and wildlife creatures. She is the youngest child of her parents Jeff and Brenda, older sister, Sydney, and older brother, Brayden. At a very young age, Ella was drawn to her pets and animal friends outside. Ella is a Junior at Osceola High School, Osceola, WI. After graduation, Ella plans to attend college to further her studies.

As Ella grew up, she completed her chores that involved feeding and cleaning her pets. Ella showed love and care to their needs, making sure they were well taken care of. As a kennel assistant, Ella provides the same love and care for our animals as the rest of the staff!