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Who We Are

Faculty

 
Dr. Kraus

Karl Kraus DVM, MS, Diplomate ACVS

Professor and Section Head

Karl H. Kraus is Chief of Small Animal Surgery at Lloyd Veterinary Medical Center at Iowa State University and diplomat of the American College of Veterinary Surgeons.  He graduated from Kansas State University in 1985, completed residency training at University of Missouri-Columbia in 1989 and was professor of surgery at Tufts University from 1989 to 2007.  He also held a joint appointment at Harvard University where he helped develop neurosurgical procedures on humans at Brigham and Women’s Hospital from 1989 to 1998.  He was founder of Securos Veterinary Orthopedics and Chair of the Board of Directors from 1997 to 2007.  He is the inventor of the Securos External Fixator System, bone anchor and Cruciate Repair System, and SOP plating system.   His major areas of interest include fracture repair, external fixation, ACL repair, spinal stabilization, and neurosurgery.

Dr. Hoefle

William Hoefle DVM, MS, Diplomate ACVS

Professor

 

 

Clinical and research interests: Dr. Hoefle's clinical research interests include total hip prosthesis, bone grafts and osteosarcoma treatment.

 

 

 

Dr. Toombs

James Toombs DVM, MS, Diplomate ACVS

Professor

 

Clinical and research interests: Small animal orthopedic surgery, external skeletal fixation, and small animal neurosurgery.

 

 

 

      

 

Mary Sarah Bergh DVM, MS, Diplomate ACVS, Diplomate ACVSMR

Associate Professor

 

Dr. Bergh is an Associate Professor of Orthopedic Surgery and the Director of the Canine Rehabilitation Center at Iowa State University College of Veterinary Medicine. She has earned board certifications from the American College of Veterinary Surgeons (ACVS) and the American College of Veterinary Sports Medicine and Rehabilitation (ACVSMR).  She attended veterinary school at the University of Wisconsin, completed an internship University of Pennsylvania and a residency in small animal surgery at The Ohio State University College of Veterinary Medicine. She also earned her Masters of Science degree at The Ohio State University in 2008, while investigating fractured central tarsal bones of racing greyhounds. Her clinical and research interests include hip, knee and elbow joint replacement, arthroscopy, treatments for cranial cruciate ligament disease including TPLO/TTA, rehabilitation and racing/athletic injuries.


   

 
Residents
 

 

 

Dr. Eric Zellner

 

Dr. Zellner is in his third year of surgical training after completing his internship here at Iowa State University. He is originally from Michigan and graduated from Michigan State University. He has combined his enthusiasm for sports and helping animals by maintaining involvement in the ISU IronDog Fund. He is in his third year of surgical training.


 

Dr. Scott Christopher

Dr. Christopher grew up in Toms River, NJ and completed his veterinary school at the University of Pennsylvania. Following graduation he completed a small animal rotating internship at the University of Missouri. This was followed by a fellowship and practicing canine physical rehabilitation at Veterinary Orthopedic and Sports Medicine in Maryland followed by a surgical internship in the Philadelphia area. From there Dr. Christopher completed a research fellowship at the University of Florida in the Comparative Biomechanics laboratory.   His primary interests lie in orthopedic disease treatment and physical rehabilitation. Dr. Christopher is married to a fellow small animal veterinarian and the proud father of two wonderful children and four dogs. Dr. Christopher is in his second year of surgical training.

 

Dr. Jaron Naiman

Dr. Jaron Naiman grew up in sunny southern California and obtained his undergraduate degree in biology at UCLA. He attended veterinary school at the University of California Davis, and he just finished a Small Animal Rotating internship at Animal Specialty Group in Los Angeles. Dr. Naiman is interested in the application of minimally invasive surgical treatments for small animal patients. Dr. Naiman is in his first year of surgical training.

 

 

 

 
 

 

 

Technicians

 
 

Amy Dennis

 

Amy grew up in Granger, Iowa, she graduated from Iowa State University in 2006 with a BA in Advertising and a minor in Spanish. After working in Kansas City for a few years, she left the marketing world and returned to school to pursue a much more fitting career as a Veterinary Technician, graduating from DMACC in 2012. Amy enjoys riding horses and playing at the lake with her lab Rylea.


 

Diane Perry

 

Diane Perry received certification as a veterinary technician from the University of Minnesota, Waseca in 1984.   She worked for 3 years in private practice in the Des Moines area before joining the surgery department at Iowa State University in 1987.  Diane currently enjoys working in the Sophomore and Junior teaching labs during the school year and assisting the surgery department during the summer months. When not working, Diane enjoys spending time with her family and 2 Brittanys, doing almost any kind of outdoor activity.

Rachael Rail

Rachael grew up in a small town in Southeast Iowa, and graduated with two degrees from Kirkwood Community College in Cedar Rapids. She has worked with the surgery and anesthesia department at Iowa State University since 2007 and has gained a tremendous amount of knowledge and skill since starting her career in Ames. She enjoys spending time with her family and their bouncy golden retriever, Penny and would someday like to own chickens and ducks!

 

Cindy Wooledge

Cindy grew up on a farm in Southeast Nebraska. She graduated in 2003 with an A.A.S in Veterinary Technology from Vatterott in Omaha, NE. After graduation Cindy worked in a small animal practice in Lincoln until joining our team at ISU in December of 2003. She has experience in small animal Internal Medicine and Surgery.  Her interests are wound care and infectious disease. Cindy enjoys spending time with her family and their three rambunctious feline friends; Innova, Storm, and Rex.