Meet the Team

Meet the Team

Our Doctors

Kari Wittmer (Owner)  photo

Kari Wittmer (Owner)

Dr. Kari Wittmer, a Coon Rapids native, has owned and operated Andover Animal Hospital since its opening in 2007. She obtained her undergraduate degree at the University of Wisconsin-River Falls and completed her Doctor of Veterinary Medicine (DVM) degree at the University of Minnesota.

Professionally, Dr. Wittmer likes to stay on the cutting edge through usage of technological advancements such as therapy lasers and surgical lasers which help to decrease pain, inflammation, and accelerate healing. Her areas of interest include wellness care, developing lasting relationships with her clients, ophthalmology, and dentistry.

Dr. Wittmer and her husband have two children, Dominic and Gabriella. She spends most of her free time chasing after her busy toddlers! With any spare time she loves to practice dressage and jumping with her horse Sofa So Good.

Dr. Wittmer’s furry family includes her cat, Whisper, and her Standard Poodle, Rainey.

Joanne Kamper   photo

Joanne Kamper

Dr. Kamper, originally from Saint​ Peter, returned to Minnesota in 2009 with her husband Dave. She has been a member of the team since her return. Dr. Kamper obtained her undergraduate degree at Gustavus Adolphus College and completed her Doctor of Veterinary Medicine (DVM) degree at the University of Minnesota where she was a classmate of Dr. Wittmer. In her spare time she enjoys nature walks and art fairs. Welcoming Dr. Kamper home are her cats, TLC "3-legged cat", Mrs. Farsnworth, Pepper, and Mr. Pickles.

Craig Reiman  photo

Craig Reiman

Dr. Reiman has been with Andover Animal Hospital full time since January 2012. He attended the University of Minnesota for his undergrad requirements and veterinary school, which he graduated from in 2004. Dr. Reiman grew up in Spring Lake Park and now lives in Ham Lake with his wife, son and 3 cats. In his spare time Dr. Reiman enjoys fishing (especially Northern Pike), video games, and home brewing beer and sodas. His favorite dog breed is Rottweiler, but he also has affinities for Boxers, Pit Bulls, Border Collies, and Cavaliers.



Jeff Wiemann  photo

Jeff Wiemann

Pet- Ned, English Cocker Spaniel, 8 years old. He is a very loving and silly dog who loves to chase squirrels and on the couch.

When not working I enjoy spending time with my wife and dog. I also read a lot of fiction, watch movies and shoot targets for fun with shotguns and pistols.

I started out doing scientific research but was not fulfilled. The research world was just too far from everyday things in life that matter to me. Practicing medicine is very real and definitely what I should be doing with my life. I strive to become a better veterinarian and person, every day.

I really like cats, but dogs are my favorite animal by far. I am fascinated by the fact that  humans and dogs have been living and working together for over 100,000 years. The bond between dogs and people is unlike that between us and any other animal. I can't imagine living without dogs.

Christina (Tina) Froemming photo

Christina (Tina) Froemming

Dr. Froemming joined the team at Andover Animal Hospital in Oct 2017. She is a lifelong Minnesota resident, growing up in a small town in northern Minnesota. Dr. Froemming
completed her Bachelor degree in Biology at Gustavus Adolphus College and Doctor of Veterinary Medicine (DVM) degree from the University of MN in 2006.
She was very excited when presented with the opportunity to rejoin Dr. Wittmer and her staff at Andover Animal Hospital after having trained under Dr. Wittmer as a new graduate.

Her professional interests include preventative medicine, senior pet wellness, dentistry, and dermatology.

Dr. Froemming along with her husband Shawn have 3 children, son Evan and daughters Avery and Ellie. When not working, Dr. Froemming spends most of her time with her family, the kids keep them very busy. In any spare time she enjoys following the local sports teams, baking, crafting. They also share their home with a mixedbreed dog (Jersey) and two cats (Latte and Stormy).

Katie Gilbertson photo

Katie Gilbertson

Dr. Katie grew up in northern Minnesota on a dairy farm. She graduated with her Bachelor's degree in Biology from The College of St. Scholastica in 2006. She worked at small animal hospitals as a receptionist and veterinary technician for 8 years. She achieved her DVM at Iowa State University in 2017. She worked as a mixed animal veterinarian for the first 1.5 years of her career then moved on to strictly small animal medicine when she started working here in October 2018.

Professionally, Katie enjoys soft tissue surgery, ophthalmology and cardiology. She also has a passion for preventative medicine and helping clients learn how to take the best care of their furry family members.

Katie's furry family consists of her terrier mix, Tucker, and a rambunctious cat, Millie. In her free time, Katie likes to explore new restaurants and breweries around the twin cities, cooking, going for hikes with her dog, golfing, and playing the piano.

Heidi  Johnson photo

Heidi Johnson

Dr. Heidi Johnson joined the Andover Animal Hospital team in January of 2019. She grew up in Dayton, MN and earned her Bachelor’s Degree in Biology from St. Cloud State University. Dr. Johnson received her Doctorate in Veterinary Medicine at the University of Minnesota in 2007 and practiced in the Twin Cities for 11 years prior to coming to Andover.

Her professional interests include internal medicine, preventative, senior pet care and fear free. She values strengthening the human animal bond and is looking forward to building long lasting relationships with the clients and patients at Andover Animal Hospital.

While not practicing medicine, Dr. Johnson can be found spending her time with her husband and fur children. She shares her home with one spoiled dog (Nala – Boston Terrier) and three adorable cats (Lakota – Ragdoll Mix, Martin – Siamese Mix, Ezmae – our 3 legged Domestic Short Hair). She enjoys traveling, hiking, boating, reading, hitting up the local breweries/wineries, and catching up with friends.

Michelle  Schaak photo

Michelle Schaak

Dr. Michelle Schaak left the warm California sunshine and returned to Minnesota, where she graduated from the University of Minnesota College of Veterinary Medicine. Since graduation she has worked in both general practice and emergency settings in the Twin Cities Metro area. Prior to pursuing her veterinary degree, she worked as a veterinary technician in emergency and specialty practice, which fostered a strong interest in emergency and critical care. Her special interests also include anesthesia and pain management, internal medicine, cardiology, and ophthalmology. In her spare time, she enjoys gardening, baking, and outdoor activities with her husband and four kids. Her family also includes two Golden Retrievers (Harvey and Haven) and two opinionated cats (Hercules and Houdini).

Hospital Managers

Sharon Nash (Hospital)  photo

Sharon Nash (Hospital)

Sharon is a Certified Veterinary Technician that started with Andover Animal Hospital in June of 2015 as hospital manager. She received her veterinary technician certification in 1999 and worked as a lead CVT and management of several veterinary hospitals. She has enjoyed a 25 year career working in the veterinary field. Her experiences include working in emergency veterinary medicine, both as a technician and in management as well as working in research as a surgical technician. She had also received schooling in dental hygiene but working in the veterinary field is her true passion.

Sharon has an adult son and a daughter as well as a 20 year old Siamese cat named Sam, aka “Sham Wah” and a Shih Poo rescue named Penelope Rose affectionately referred to as “P-Woes”. Sharon enjoys traveling, walking and spending time with her boyfriend, friends, family and pets.

Don Wittmer (Office)  photo

Don Wittmer (Office)

Don has been with Andover Animal Hospital since the opening of the hospital. Don (Dr. Wittmer's father) works in the office balancing the books and doing payroll.

Don loves spending time with Mary K and his family. Together with Mary K, he is welcomed home by Peanut and Cookie.

Veterinary Technicians

Mindi Schwandt (Lead)  photo

Mindi Schwandt (Lead)

Mindi began her career at Andover Animal Hospital in January 2012 as an extern. Shortly thereafter she graduated from Minnesota School of Business with her Associate in Applied Science (AAS) degree in Veterinary Technology. Mindi loves the variety of duties that being a veterinary technician offers, and especially enjoys assisting in surgery. Mindi has a strong compassion for animals, and has dreamed of working in the field since she was a little girl. In her free time Mindi likes to travel (Duluth and Europe being her favorite locations), hiking, camping, and spending time with friends and family. Awaiting Mindi at home are her husband Phil, a deaf Australian Shepherd named Dopey, a cavalier cocker mix named Olaf and her Ragdoll cat Misty.

Danielle Brekke  photo

Danielle Brekke

Danielle started working as a Veterinary Technician in 2008 after graduating with a BA in Biology and joined Andover Animal Hospital in 2014. In her free time Danielle loves to do volunteer veterinary work for Leech Lake Legacy, garden, and go on road trip adventures. She is greeted each night by her 2 cats (Chesney and Paisley) and her 2 birds (Toby and Daisy).

Tia Faacks   photo

Tia Faacks

Tia joined the team in March 2008 as a Vet Tech. She started out her career working as a Veterinary Receptionist in 1999 and her interest drove her to pursue further technician training and included a stint as a emergency technician. Tia does a fabulous job keeping our shelves stocked with all the latest prescription special diets from Royal Canin and Science Diet and is one of our Certified Laser Technicians. Tia says some of the driving influences that she likes about her position is the variety that the position offers and the fabulous team she is blessed to work with. When Tia is away from work she enjoys reading and spending time gardening. Tia is welcomed home each night by her significant other Ben, Cooper her Chesapeake Bay Retriever, Blu her Boxer and her newest addition Surly who is an American Stafforshire Terrier/Boxer mix.

Amanda Reynolds photo

Amanda Reynolds

Amanda got her AAS degree in Veterinary Technology from Globe University in March of 2014 and then passed her certification exam in July of that year. Amanda joined our team in April of 2015. Amanda enjoys all aspects of being a veterinary technician but takes a special interest in nutrition and nursing sick and injured patients. She is our OSHA Officer and makes sure that the hospital is always in compliance with federal, state and local regulations for the health and safety of our staff. In her spare time she enjoys crochet, cross stitch, sewing, and reading. She is greeted at home every night by her fiancé Aaron, sons Kayden and Seth, stepdaughter Lily, her bulldog mix “Yoshi”, her cat “Leonard” and her plecostomus fish “Paul”.

Nicole Ruff  photo

Nicole Ruff

Nicole began her career as an intern at Andover Animal Hospital in 2015. She soon after graduated from Minnesota School of Business with an Associates in Applied Science as a Certified Veterinary Technician. She enjoys assisting with surgeries and monitoring pets while under anesthesia. In her free time she frequently goes fishing, camping, and hiking with friends and family. At home, she spends time with her two cats, Peach and Tuna, and Raven, her Doperman Pinscher, who loves to go on hiking trips to Taylors Falls and Duluth.

Riley Jorissen  photo

Riley Jorissen

Riley started her career as a kennel attendant at the age of 15, from there she became kennel manager, then gained on the job training as a veterinary assistant and receptionist. She became certified as a veterinary technician and graduated with an A.A.S in 2005. Riley loves working in veterinary medicine and especially enjoys working as a surgical technician. She is planning to become Low Stress Handling certified in 2018. Her favorite part of working in a general practice is developing a relationship with both clients and their pets. Outside of work she has an energetic little boy Oliver that keeps her on her toes, as well as Oliver’s kitten AndyPants, her cat Izzy and their goldfish named Boy. 

Jennifer Steinmueller photo

Jennifer Steinmueller

Jen joined the Andover Animal Hospital as a veterinary technician in August of 2016. She started working with wildlife in 2006 while she was working on her bachelor’s degree at the University of MN. She graduated with a B.S. in Animal Science in May 2009. While in school she trained to become a veterinary technician and has been working with companion animals since then. She enjoys dentistry, senior pet care, animal behavior, and taking care of sick/injured animals.

On her days off she enjoys spending time with her fiance Thom and her two dogs: Maizie a black lab mix and Boogie a brindle American Staffordshire terrier mix. She also has two rabbits Howie and Stewie, a Sulcata tortoise named Shelly and a Bearded dragon named Argon. In her free time she likes reading fictional books, boating/fishing, yoga and traveling.

Larissa Moline  photo

Larissa Moline

Larissa graduated from Argosy University with her AAS in veterinary technology and has been a Certified Veterinary Technician since 2015. She joined our team in April 2017. Larissa has always loved working with animals; before she was a technician she did dog walking, boarding, and doggy day care. Larissa’s “children” are her 2 cats, Arwen (siamese) and Gimli (manx); a pitbull/aussie puppy named Bilbo Doggins; and two lovely western painted turtles named Koopa and Bowser. In her free time she enjoys renaissance festivals, pottery, costuming, cross stitching, and digital illustration.

Lori Davis  photo

Lori Davis

Lori joined Andover Animal Hospital in July 2017 as a Certified Veterinary Technician (CVT). Lori earned her associates degree in 2013 from Pima Medical Institute in southern California and became a Registered Veterinary Technician that same year. Lori also earned her BA in Psychology from San Diego State University in 2006, graduating summa cum laude, but decided to change career paths shortly thereafter. Lori grew up on a christmas tree farm in Oregon, relocated to southern California for college, then moved in June 2016 and received her CVT in Minnesota. Lori greatly enjoys working with cats, assisting with surgery, and being able to do many different tasks as a technician. In her free time, Lori loves traveling, reading, arts and crafts, and spending time with her family and friends. Lori is greeted each night by her husband of 10 years, their two cats (Miss Pearl and Tubby) and a betta fish.

Eva Heifort-Benoit   photo

Eva Heifort-Benoit

Eva is a Certified Veterinary Technician and she is also a Certified Laser Therapy Technician. Prior to finding her true passion in a career as a CVT, Eva spent years in the retail and hospitality professions. Eva is very dedicated to helping improve the lives of animals and their owners. To further achieve this goal, she is an animal control officer and is also involved with multiple animal rescue organizations, among them Ruff Start, Angel of Hope and St. Francis Pet Rescue. One never knows how many fostered orphan kittens can be found at Eva's home! She works at another veterinary clinic as a CVT also. Eva is interested in animal behavior, nutrition and allergies. Her family includes her husband Dale, their young son Logan, two adopted older cats Leonard and Pepper, two foster-failure brother cats Smokey & The Bandit (Bandit is mostly deaf), and an aquarium full of fishy-friends. Eva also has two dogs, Jase and Liberty. They were both surrendered to her by their owners instead of being euthanized because of their severe allergies. They are happy and healthy now that their allergies are being treated with medications and hypoallergenic diets. In her spare time, Eva loves to cook, read, garden and tend to her indoor "jungle" of plants (as Dale puts it).

Sophie Cross (Assistant)   photo

Sophie Cross (Assistant)

Bio coming soon!

Rachel Vennes  photo

Rachel Vennes

Bio coming soon!

Reception Staff

Stacy  Benincasa (Lead) photo

Stacy Benincasa (Lead)

Stacy has been a team member since June 2007 and is the smiling and cheerful face that greets clients at the reception desk. Her background includes over 11 years experience working as a Veterinary Technician. Stacy is originally from Plymouth and currently resides in Anoka. Stacy has one daughter and 2 grand kids. In her free time Stacy enjoys spending time training, breeding and barrel racing AQHA horses. Stacy's furry friends include her 2 pugs, Carmen and Katy, her 2 Aussies, Red and U TOO. She also has 3 horses and a chicken.

Jessica Dilliner  photo

Jessica Dilliner

Jessica joined AAH in the spring of 2016. originally from Northwest Indiana (still a tried & true Hoosier) she has lived in MN since 2005. She attended Minnesota school of Business and graduated AAS in 2010. The idea of becoming a veterinary technician came to mind when Jessica was a dog walker. She is one of the receptionists you will meet upon walking in the front door. Currently she has two dogs Buckwheat (Golden retriever) and Ivey (Basset Hound lab mix) and one sassy cat name Mew Mew. Growing up she has always loved animals and has lived with numerous pets including a black tailed Prairie dog named Chubby. In her spare time she loves to travel, garden, bake treats and spend time with her boyfriend Chad. 

Kayla Ramsey  photo

Kayla Ramsey

Kayla joined the Andover Animal Hospital family as a receptionist in May 2017. She is one of the happy faces you will see upon walking in the door. Prior to finding her love of working at an animal clinic, Kayla received her Bachelor's Degree in Child Development and Family Science from NDSU. After working in childcare for multiple years, she found herself looking for a change. A friend stated that she talked so much about her cat that she should look at doing something with animals. Previous to working at Andover Animal Hospital, Kayla enjoyed 5 years of experience working as a Veterinary Receptionist. In her downtime, Kayla enjoys spending time at the cabin with her family, watching movies, reading, and painting. Currently, Kayla resides with her three cats, Gizmo (the lazy senior), Lady (the cuddle-bug), and Tippy (the hyper, crazy forever-kitten).

Mary K. Wittmer  photo

Mary K. Wittmer

Mary K. loves spending time filling in at the reception desk and always brings a lot of cheer to the front office. Mary K. enjoys her time at the clinic as she spends additional time with her daughter. Mary K. is welcomed home by their faithful furry friends Cookie and Peanut.

Dawn Winslow photo

Dawn Winslow

Dawn joined the Andover Animal Hospital team as a receptionist in July of 2018. She has worked in the veterinary field for 4 years. She has had a love and passion for all kinds of animals since she was very young. She passed this love for animals to her 17 year old identical twin daughters Kassidy & Kellsey. They have a Pitbull named Ruby and a polydactyl cat affectionately named Sixx, as well as her trusted sidekick Jaxon; a Lab, Weimaraner and Akbash mix, whom is with her ALL the time!

In her spare time, Dawn enjoys spending time with her daughters and friends, whether it be camping, fishing,swimming or playing sports. If it is sunny and warm you will definitely find her outdoors.

Andover Animal Hospital

1730 139th Ln
NW Andover, MN 55304

Phone: 763-434-3933 Fax: 763-434-4030


Monday 8:00am - 6:00pm

Tuesday 8:00am - 6:00pm

Wednesday 8:00am - 6:00pm

Thursday 8:00am - 6:00pm

Friday 8:00am - 6:00pm

Saturday 8:00am - 2:00pm

Sunday 10:00am - 3:00pm