Our Veterinary Team

Veterinarian & Owner

Dr. Ben Nemmers

Ben was born in Okinawa, Japan and raised in Cedar Falls, Iowa. Since he was young, he always thought about being a veterinarian. He received a B.S. in Zoology at North Dakota State University, where he competed on the men's basketball team on an athletic scholarship. Dr. Nemmers then attended Iowa State University College of Veterinary Medicine and graduated in May of 2009. He has an interest in Small Animal Surgery and Dermatology.

Veterinarian & Owner

Dr. Colleen Nemmers

Colleen was born and raised in Philadelphia, PA where she completed her undergraduate degree in Biology and competed in Track & Field at the University of La Salle in Philadelphia. She attended Iowa State University College of Veterinary Medicine and graduated in May of 2009. Her interests include managing medical cases such as diabetes, thyroid disease and other endocrine conditions.


Dr. Amanda Ritter

Amanda's passion for animals started at a young age in Wyoming caring for ducks and rabbits. She completed her B.S. in Biology at Iowa State University and subsequently moved to Lincoln, Nebraska for her first two years of the ISU Veterinary Medicine program. She then graduated from Iowa State University College of Veterinary Medicine in May of 2018. Amanda’s main interests in vet medicine are surgery, dentistry, and dermatology. Outside of work she enjoys running, biking, water/snow skiing,and caring for her cat Herbert Lewis.

Staff Supervisor

Kari A.

Kari has been in the veterinary field for 12 years, 4 of which have been at Companion. She is one of our Veterinary Technicians and has also earned the position of Staff Supervisor! Kari is a Waterloo native where she lives currently with her husband and two kids. She has several pets of her own and has always had a passion for taking care of animals.



Brooke was born and raised in the Waukee/Grimes region of Iowa. She now lives in Traer, IA with her husband, his 2 kids and their 2 dogs.  She has always been an animal lover. She is very excited to be working with our staff in the reception area! 



Alyssa was born and raised in Jesup, IA. She obtained degrees for Veterinarian Assisting & Animal Science from Hawkeye Community College. She currently has one fur-baby named Bandit who is a Mini Aussie. You will see Alyssa’s smiling face at our front desk as one of our receptionist.

Veterinary Technician


Mackenzie is a veterinary technician and grew up in Traer, Iowa. She graduated from North Tama and attended Vatterott College in Omaha, Nebraska. Mackenzie is married to her husband Justin and have two baby girls. She also has three pets, Jager, her dog and Sheeva and Walter, her cats. 

Veterinary Technician


Megan was born and raised in Waterloo. She graduated from Des Moines Area Community College and is a Registered Veterinary Technician. She loves working with animals and says assisting with surgeries is her favorite part. She currently lives in Cedar Falls with her husband, Jon and two dogs Zoey, a beagle and Raven, a black lab. 

Veterinary Technician


Leanna was raised in Alta Vista, Iowa and later moved to New Hampton where sure currently lives. She graduated from Rochester Community and Technical College. She passed her boards and became a Registered Veterinary Technician in 2019. She has always loved and wanted to work with animals. She has two dogs, Blu and Sarge.

Veterinary Assistant


Abby was born and raised in Cedar Falls, IA. She has been an animal lover as far back as she can remember. Abby graduated from Hawkeye Community College with her Vet Assisting degree. She has a background in animal rescue and animal shelter work. Abby lives with her husband Cody, dog Presley, and cat Amelia!

Veterinary Assistant


I was born and raised in Battle Creek, MI. I moved to Iowa 9 years ago with my husband of 16 years. We have 3 kids, 4 dogs, 3 cats, 2 birds, 2 bunnies and a snake. I have always had a passion for working with animals growing up and always had a house full. I attended Hawkeye Community College for the Vet Assisting Program and hope to work towards becoming a technician.

Boarding Supervisor


Kaitlin was born in Waterloo, Iowa and currently living in New Hartford, with her fiancé Paul and her 6 dogs/3 cats. Kaitlin graduated from Dike New Hartford and has been working with animals in the doggy daycare/boarding for 6 years. Kaitlin has always been passionate for animals since she was little and would love to become a dog trainer. Outside of working Kaitlin enjoys camping, kayaking, hanging out with her dogs, being around family/friends and reading books.

Daycare Specialist and Veterinary Assistant


Veterinary Assistant

Kari W.

Kari graduated from Treynor, Ia, and moved to the Cedar Valley in 2005 where she started her career working with animals. Her passion for helping animals started at a very young age. She has been with Companion since 2015.



Erica was born and raised in Waterloo IA. She has been an animal lover her whole life and has found a career she is passionate about! She has seven years of grooming experience and absolutely loves what she does. She enjoys spending time with her family, including her three cats, three dogs, and her bearded dragon.



Danae was born and raised in Waterloo, IA. She grew up wanting to be a vet, but stumbled upon grooming 6 1/2 years ago and fell in love. She is passionate about helping animals look and feel their best. When she is not grooming, she loves spending time with her and her husband's families. Her house is full of their own fur babies: Riley (their pup), three kitties: Sophie, Harold, and Jasper and Spyro, a bearded dragon.

Daycare Specialist


What Our Pet Parents are Saying!

Drs. Ben and Colleen treated our 
Tucker as their own. Their genuine love for all animals shines through with every visit. They shared tears with us at the very end. We cannot say enough about them."
Sue C and Tucker

4728 University Ave.

Cedar Falls, IA 50613


Ph:    319-277-2354    

Fax:  319-277-0673     

Email:  companionac@cfu.net    

Companion Animal Clinic logo | Cedar Falls - Waterloo, Iowa

Dr. Ben Nemmers, Dr. Colleen Nemmers and Dr. Amanda Ritter are proud to continue our long-standing tradition of providing general and advanced veterinary care to the Cedar Falls, Waterloo and surrounding communities. Our team at Companion Animal Clinic & Pet Resort would love to meet you and your furry companion. Rest assured we care for your pets just as we do our own.  

Clinic Hours

Monday - Friday

7:00 am - 5:15 pm


8:00 am - 11:00 am

Daycare Hours

Monday - Friday

7:00 am - 6:00 pm

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