We have compassionate, experienced staff

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.

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.

Glenn Ringenberg, DVM, Associate Veterinarian

Dr. Ringenberg attended vet school at Iowa State University and began working at our clinic in 2013. He grew up in Lexington, Nebraska, and is interested in bovine nutrition and reproduction. In his spare time, Glenn enjoys football, the bagpipes, hockey, hunting and family time.

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 with his dog Darla. At work, Russ likes going on farm calls.

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.

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.

Cloe Krier, Receptionist

Lexie Cook, Veterinary Assistant