We have compassionate, experienced staff

We know how important finding a veterinary clinic that can keep your pets and the livestock that provides your livelihood in good health is to you. Trust the team at Twin Valley Veterinary Clinic in Dunlap, Iowa.

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Nicholas Gambs, DVM, Practice Owner

Dr. Gambs grew up in Minden, Iowa, and received his Doctor of Veterinary Medicine degree from Iowa State University. He began working at Twin Valley in 2000. He enjoys golfing, and teasing people.

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Johanna Pothast, DVM, Practice Owner

Dr. Pothast received her Doctor of Veterinary Medicine degree from Iowa State University. She joined the staff at Twin Valley in 2011. She is originally from Nebraska and enjoys camping, hiking, and Husker football.

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Andrea Strong, DVM, Associate Veterinarian

Dr. Strong received her Doctorate’s in Veterinary Medicine from Iowa State University. She joined our staff in June 2023. Andi enjoys spending time with her cats, watching Netflix, and riding her horses.

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Kathryn Gamblin, Veterinary Technician

Kathryn, also known as “Kate” around the office, moved to Dunlap in 2019 and joined Twin Valley in 2023. Having completed her Associate of Applied Science in Veterinary Technology Systems at Nebraska College of Technical Agriculture and passing the National Veterinary Technician Exam in 2007, she joins us with 15+ years of experience in the animal industry. Kathryn also completed an Associate of Applied Science in Agriculture Business from Iowa Western Community College and a Bachelor’s in Business from Bellvue University. She looks forward to the level of customer service and patient care she can bring our clients.

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Russell Feller, Practice Manager/Veterinary Assistant

Russ is originally from Remsen, Iowa, and began working with Twin Valley in October 2012. In his spare time, Russ enjoys hunting, farming, and hiking. At work, Russ likes going on farm calls.

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Linda Kirk, Veterinary Technician

Linda was born and raised in Dunlap, Iowa. She began working at Twin Valley Vet Clinic in 1997. Linda loves being a part of a team that heals sick and injured animals.

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Jim "Tater" O'Day, Veterinary Assistant

Tater returned to the staff of Twin Valley Veterinary Clinic in January 2016 to assist the veterinarians with cattle handling and during farm calls. He was raised in Dunlap and enjoys welding and being a "Barn Dad" to his daughters who like to horseback ride.

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Tanya Hanks, Veterinary AssistantTanya Hanks

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Tanya Hanks, Veterinary AssistantTanya Hanks

Briana Farley, Customer Service/Reception

Briana is originally from Rockport, Missouri, but moved to Woodbine when she was in kindergarten and has lived there since. Her main hobbies include going to concerts, spending time with family and friends, and being a mom to her two children and her "fur kids." Briana likes the friendly staff and environment at the clinic. She started in February 2024.

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Cloe Krier, Veterinary Assistant

Cloe is from Soldier and attended Maple Valley Anthon Oto Charter Oak Ute High School. She joined the staff at Twin Valley in January 2021 and likes seeing the animals as she helps customers.

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Becky Branstetter, Veterinary Technician

Becky is a life long resident of Harrison County. She lives in Woodbine, but is originally from Logan. Becky graduated from the Veterinary Technician program at Iowa Western Community College in 2009. She enjoys pig farming, hiking, and traveling, but spends most of her time chasing her kids around doing activities. Becky enjoys working with her fellow teammates at the clinic and interacting with patients, as well as the fast-paced, never dull clinic environment.

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Robert Brock, Large Animal Assistant

Robert raises a 30-head commercial cow-calf herd with his family near his home town of Dunlap, Iowa. Working cattle is his favorite part of working at the clinic and he joined the staff in 2022.

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Terri Meadows, Veterinary Assistant

Terri started working at the clinic in 2021, and enjoys the constant variety associated with her job at Twin Valley. Her home town is in the Charter Oak-Ute area. In her free time, she likes quiet activities, like reading and hanging out with her pets.

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Ariel Schneller, Veterinary Assistant

Ariel has been working at the clinic since 2021. When she's at work, she enjoys customer service and making cute posts and videos of the animals that she sees during the day. She has two daughters, three cats, and a plumber boyfriend.

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Tanya Hanks, Veterinary Assistant

Tanya rejoined the staff at Twin Valley in 2021. She is from Mapleton, Iowa, and enjoys photography and painting. Her favorite part of working at Twin Valley is the fact that she never knows how each day will unfold or the opportunities and challenges she will face during the work day. She also enjoys in-hospital patient care and working cattle.

Peanut and Mikey

Mikey and Peanut are our resident client welcoming duo.They both joined the staff the fall of 2024. Mikey's hobbies include tormenting our clients and patients, eating, sleeping, and hatching escape plans. Peanut's hobbies include tormenting Mikey.

Call Us Today! (712) 643-5160

Twin Valley
Veterinary Clinic

Hours of Operation:

Call or Email Us Today

We have compassionate, experienced staff

Nicholas Gambs, DVM, Practice Owner

Johanna Pothast, DVM, Practice Owner

Andrea Strong, DVM, Associate Veterinarian

Kathryn Gamblin, Veterinary Technician

Russell Feller, Practice Manager/Veterinary Assistant

Linda Kirk, Veterinary Technician

Jim "Tater" O'Day, Veterinary Assistant

Briana Farley, Customer Service/Reception

Cloe Krier, Veterinary Assistant

Becky Branstetter, Veterinary Technician

Robert Brock, Large Animal Assistant

Terri Meadows, Veterinary Assistant

Ariel Schneller, Veterinary Assistant

Tanya Hanks, Veterinary Assistant

Peanut and Mikey