David Twedt
Dr. David Twedt
Associate Director of Continuing Education in the Translational Medicine Institute
Colorado State University
Dr. Twedt is past President of the ACVIM and Comparative Gastroenterology Society. Publication and research interests include liver disease, gastrointestinal disease and endoscopy. He has also been the recipient of a number of teaching and research awards including the Veterinary Endoscopy Society Pioneer in Endoscopy Award. He is also the editor of several textbooks including Current Veterinary Therapy.


Dennis Chew
Dr. Dennis Chew
Professor Emeritus, Department of Veterinary Clinical Sciences
The Ohio State University
Dr. Dennis J. Chew is a graduate of the College of Veterinary Medicine at Michigan State University. He finished his residency in internal medicine and nephrology at the Animal Medical Center in New York City. Dr. Chew taught at The Ohio State University College of Veterinary Medicine for 36 years and is now a professor emeritus.

Most of Dr. Chew’s work has been in urology/nephrology in small animals. He has a special interest in calcium metabolism disorders, treatment of renal secondary hyperparathyroidism and idiopathic/interstitial cystitis in cats. He pioneered many of the diagnostic procedures used today for urinary endoscopy in dogs and cats.

Lynelle Johnson
Dr, Lynelle Johnson
Unviersity of California, Davis
Dr. Lynelle Johnson received her veterinary degree from The Ohio State University, was in private practice in New York, and completed a Master’s Degree and residency program at the University of Illinois. She received her Ph.D. in Physiology from the University of Missouri.

Dr. Johnson’s research is focused on validation of diagnostic tests for respiratory diseases as well as identifying novel respiratory conditions. She runs a busy respiratory service and routinely performs endoscopic and interventional procedures. Dr. Johnson has published multiple articles and book chapters on respiratory topics and just completed the second edition of her textbook, Canine and Feline Respiratory Medicine. She has lectured Nationally and Internationally on respiratory medicine and respiratory endoscopy.

Michael Leib
Dr. Michael Leib
Emeritus Professor of Internal Medicine
Virginia-Maryland Regional College of Veterinary Medicine
Dr. Michael Leib received his DVM from the University of Georgia in 1979 and in 1984, became a diplomate in the American College of Veterinary Internal Medicine. Since 1983, he has been a faculty member of the Department of Small Animal Clinical Sciences at the Virginia-Maryland Regional College of Veterinary Medicine.

Dr. Leib’s clinical and research interests are in gastroenterology and endoscopy. He has published extensively and has lectured nationally and internationally.

Craig Webb
Dr. Craig Webb
Professor, Small Animal Medicine
Colorado State University
After completing his PhD in Neuroscience, Dr. Craig Webb earned his DVM from the University of Wisconsin. He did his internship at Alameda East in Denver where he experienced his 15 minutes of fame on Animal Planets “Emergency Vets” TV show.

Dr. Webb was a resident at CSU, with Dr. David Twedt as his mentor, and has remained on faculty at the VTH ever since. He is currently serving as Interim Hospital Director of the Veterinary Teaching Hospital at CSU.