6110 Creston Avenue
Des Moines, Iowa 50321
Phone(515) 280-3100

ISU Student Experience


Iowa Veterinary Specialties employs only the finest Emergency and Specialty doctors. Come see how our doctors can exceed your expectations.


Karl Bosler

Karl Bosler, Emergency Veterinarian

Dr. Bolser Graduated from Iowa State University College of Veterinary Medicine in 1990, and has been working at Iowa Veterinary Specialties ever since. Dr. Bolser started teaching freshman veterinary students at Iowa State University in 2000, and is currently the instructor in charge of Clinical Foundations and Case Studies 1. He also teaches both anatomy classes for ISU Veterinary Students.

Angie Gearhart

Angie Gearhart, Medical Director, Emergency Veterinarian

Dr. Gearhart is a 1999 graduate of Louisiana State University. She practiced for eight years in Arkansas before moving to Iowa in 2007. She works part-time for IVS and periodically fills in at other clinics in the area. She is a member of IVMA, American Heartworm Association and the Arkansas Veterinary Medical Association.

Kevin Pottorff

Kevin Pottorff, Emergency Veterinarian

Dr. Pottorff graduated from Iowa State University College of Veterinary Medicine in 1982. He joined Iowa Veterinary Specialties as a staff veterinarian in April 2011. He practiced in Oelwein, Iowa, for four years before moving to Corning, Iowa, where he was a founding partner of Southern Hills Veterinary Services. Dr. Pottorff is a member of the American Veterinary Medical Association and the Iowa Veterinary Medical Association.

Shawna Greene

Shawna Greene, DVM, DACVIM

Shawna Greene, DVM, DACVIM received her DVM from Iowa State University in 2003. After an internship in Northern Colorado, Dr. Greene then completed her residency and received her master’s degree from Purdue University. Board certified since 2008, Dr. Greene diagnoses, stages, and treats all cancer types using the latest equipment and state-of-the-art techniques. Beginning October 5, 2015, Dr. Greene will head Iowa Veterinary Specialties' Oncology Department. Dr. Greene will be seeing patients by appointment Monday-Thursday exclusively at Iowa Veterinary Specialties.

Leah Braas

Leah Braas, DVM, CVA

Emergency Veterinarian, Hospice and Palliative Care. Dr. Braas graduated from Iowa State University College of Veterinary Medicine in 2002.  Dr. Braas enjoys emergency medicine because the atmosphere is constantly changing presenting new challenges. Recently, Dr. Braas has become a Certified Veterinary Acupuncturist and heads Iowa Veterinary Specialties' Hospice and Palliative Care Department.

Shelby Mangus

Shelby Mangus, Emergency Veterinarian

Dr. Mangus graduated from Kansas State University College of Veterinary Medicine in 2016. After working in general practice, Dr. Mangus discovered a strong passion for emergency medicine. She has a special interest in internal medicine, feline medicine, and soft tissue surgery. During her free time she enjoys gardening, canoeing, and spending time with her husband, Devin, as well as their two Cavalier King Charles Spaniels, Ava and Meadow, and two cats Pharaoh and Iris. Dr. Mangus is a member of the American Veterinary Medical Association, Iowa Veterinary Medical Association, and the American Association of Feline Practitioners.

Stephanie Larson

Stephanie Larson, DVM Emergency Veterinarian

Dr. Larson graduated from Iowa State University in 1990 with BS in Cellular and Molecular Biology. She then graduated from Iowa State University College of Veterinary Medicine in 1995, followed by 2 years of research in the molecular biology field. Dr. Larson practiced for 20 years in the Chicago area in Emergency and preventative medicine with special interests in dentistry, reproduction and surgery. She shares her home with 2 Dobermans, Cricket and Ariel.  Other interests include horseback riding, training and showing dogs, reading and gardening.  She is so glad to be back at home in central Iowa with wonderful people, great restaurants and the Iowa State Fair! Go Cyclones!

Eric Zellner

Eric Zellner, DVM, DACVS-SA

Dr. Zellner obtained his DVM from Michigan State University. He then completed his internship and surgical residency at Iowa State University. He is currently an assistant professor at Iowa State University and enjoys soccer and taking care of his animals (dogs, cats, snake, chickens and ducks) in his spare time. His surgical interests include soft tissue surgery and fracture repair.

IVS Partner's in Progress CE Event 2019

On April 3, 2019 there were twenty-one speakers offering the second annual ISU – IVS Partners in Progress CE Event at the Des Moines Botanical Center. This CE Event was open to all... read more >

Dr. Greene, one of three boarded oncologists in Iowa, discusses cancer and chemotherapy.

Dr. Greene, one of three boarded oncologists in Iowa, discusses cancer and chemotherapy. read more >

"All the Vet techs and receptionists were nothing but phenomenal and soooo understanding!"

read more testimonials >