Small Animal Internal Medicine - Texas A&M Veterinary Medical Teaching Hospital

Small Animal Internal Medicine

For small animal appointments call (979) 845-2351 Monday - Friday 7:30 a.m. to 5:30 p.m. Emergencies accepted 24 hours a day
Internal Medicine

Our Service

Our Internal Medicine Service cares for patients affected by conditions of the major body systems including the liver, kidneys, gastrointestinal tract and pancreas, lungs and upper airways, endocrine glands, immune system, and those affected by infectious diseases. We have access to the most state of the art diagnostic and therapeutic technologies that enable us to diagnose and treat many advanced diseases and uncommon problems. The size of our clinical faculty allows us a unique opportunity to collaborate with other clinical services, such as Radiography, Dermatology, Neurology, and Cardiology, providing every patient a tremendous resource of specialists-all under one roof.

To make an appointment, please call (979) 845-2351.

Our Team

Our faculty in the Internal Medicine Service are specially trained to help diagnose and treat difficult to identify and complex diseases. They understand the intricate systems of a pet's body and have access to state-of-the-art technology and diagnostic tools to help them in making a diagnosis. Our faculty is especially focused on educating and training future internal medicine specialists and working with our fellow veterinarians to help provide the best quality of life for a pet.

Audrey Cook

Audrey K. Cook, BVM&S, DACVIM, DECVIM, DABVP (Feline Practice)

Clinical Associate Professor

Dr. Audrey Cook obtained her DVM at the University of Edinburgh in 1989. She completed an internship in small animal medicine and surgery at North Carolina State University before starting her residency in small animal internal medicine at University of California at Davis. She completed this program in 1994, and achieved board certification with the American College of Veterinary Internal Medicine in 1994 and the European College in 1996. Dr. Cook owned a referral practice in Virginia for years before joining the faculty here in 2007. She works with both the Internal Medicine Service and the Feline Internal Medicine Service. Her professional interests include endocrinology and gastroenterology.  Dr. Cook has two pets, a Black Mouth Cur named Texas and a three-legged cat, Cuzco.

Jörg M. Steiner

Jörg M. Steiner, med. vet., Dr. med. vet., PhD, DACVIM, DECVIM

Professor of Small Animal Internal Medicine/ Director of the Gastrointestinal Laboratory

Dr. Jörg Steiner received his veterinary degree from the Ludwig-Maximilians University in Munich, Germany in 1992. He did an internship in small animal medicine and surgery at the University of Pennsylvania from 1992 to 1993 and a residency in small animal internal medicine at Purdue University from 1993 to 1996. He received his Dr. med. vet. degree from the Ludwig-Maximilians University in 1995 in recognition of research on feline trypsin and feline trypsin-like immunoreactivity. In 1996, he achieved board certification with the American College of Veterinary Internal Medicine and the European College of Veterinary Internal Medicine. In 2000, Dr. Steiner received a PhD from Texas A&M University for his work on canine digestive lipases and their use for the diagnosis of gastrointestinal disorders in the dog. He currently serves as a professor with the Department of Small Animal Clinical Sciences and the Department of Veterinary Pathobiology at Texas A&M University. Dr. Steiner also acts as Director of the GI Laboratory and is involved in a wide variety of research in small animal gastroenterology.

Michael D. Willard

Michael D. Willard, DVM, MS, DACVIM


Dr. Mike Willard received his DVM from Texas A&M in 1975. He spent 2 years at Kansas State completing an internship and a Master's program, and then went on to Michigan State as a resident, staying on as an assistant professor. He was an assistant professor and an associate professor at Mississippi State University for a period, before returning to Michigan State as an associate professor in 1985. Dr. Willard ultimately returned to Texas in 1988, where he has been since. He is a Diplomate of the American College of Veterinary Internal Medicine and has consulted at a private referral practice in San Antonio on specialty cases.

Debra Zoran

Debra Zoran, DVM, MS, PhD, DACVIM

Associate Professor/Chief of Small Animal Internal Medicine

Dr. Debra Zoran is a 1984 DVM graduate of Kansas State University's College of Veterinary Medicine. Following graduation, she entered private clinical practice in the Phoenix, AZ area until returning in 1987 to Iowa State University for her small animal internal medicine residency. She completed a Master's degree and became a Diplomate of the American College of Veterinary Internal Medicine (small animal internal medicine) during her time there. In 1992, she moved to Texas A&M University to undertake a PhD in nutrition with Dr. Joanne Lupton, and completed her dissertation, "Butyrate and the colonocyte: Effect on cellular events and role in protection against colon cancer," in 1997. Since that time, Dr. Zoran has been a member of the clinical faculty in the Veterinary Medical Teaching Hospital at Texas A&M University where she is actively involved with clinical, teaching, and research activities in small animal gastroenterology, nutrition, and feline medicine.

Micah Bishop

Micah A. Bishop, DVM

Veterinary Resident Instructor

Dr. Bishop received his B.S. from Texas A&M University in 2001, and later his D.V.M from Ross University School of Vet Med in 2005.  In 2006 he completed an internship with the University of Minnesota, and is currently completing his PhD from Texas A&M University.  His scholarly interests include gastroenterology, endoscopy, hereditary pancreatitis, tropical infectious diseases, and immune-mediated diseases.

Carly Duff

Carly A. Duff, DVM

Veterinary Resident Instructor

Dr. Duff received her B.S. from Cornell University in 2007 before completing her D.V.M at the University of Illinois in 2011.  She completed a rotating internship at Texas A&M University in 2012 and is currently completing her residency with Texas A&M University.  Her scholarly interests include endocrine disease and feline medicine.

Romy Heilmann

Romy M Heilmann

Veterinary Resident Instructor

Dr. Heilmann received her at the University of Leipzig in Leipzig, Germany in 2005.  She later completed her Dr. at the University of Bern, Switzerland in 2008.  She is currently completing her PhD with Texas A&M University.  Her scholarly interests include canine internal medicine, gastroenterology and hepatology, and gastrointestinal immunity.

Carly E Waugh

Carly E. Waugh

Veterinary Resident Instructor

Dr. Waugh completed her B.S. in 2006 and D.V.M. in 2010 at Kansas State University. She completed her internship at the University of Tennessee in 2011 before beginning her residency at Texas A&M University.  Her scholarly interest include gastroenterology, endocrinology, and immunology.  Dr. Waugh enjoys cooking, playing the piano, traveling, and spending time with her husband and two dogs, Wynn and Charles.

Timothy Bolton

Timothy Bolton

Veterinary Resident Instructor

Dr. Bolton received his B.S. from Baylor University College of Arts and Sciences in 2007, and completed his D.V.M at Texas A&M University in 2011.  He completed internships at North Carolina State University and Memphis Veterinary Specialists before beginning his residency at Texas A&M.

Gregory Kuhlman

Gregory Kuhlman

Veterinary Resident Instructor

Dr. Kuhlman completed a B.S. in Bacteriology at the University of Wisconsin-Madison in 1995, and received his D.V.M from the University of Wisconsin-Madison in 2009.  He completed an internship with the VCA Animal Emergency and Referral Center of Arizona in 2010 before beginning his residency at Texas A&M.

Jean Laird

Jean Laird

Veterinary Technician

Jean has worked on the Internal Medicine Service for several years. She has extensive experience in small animal care and the special tests performed by internists, such as endoscopy. She also teaches clinical skills like blood collection and catheter placement to the veterinary students.

Katy W. Waddell

Katy W. Waddell, RVT, VTS (ECC, Anesthesia)

Veterinary Technician

Ms. Katy Waddell is a registered veterinary technician with specialty certification in emergency and critical care as well as small animal anesthesia. She works with the faculty, staff, and students of the Feline Internal Medicine, Canine Internal Medicine, and Endoscopy Services.  Katy graduated in 1976 with an Associate's degree in animal health technology and was credentialed as a registered veterinary technician in Texas in 1977. She qualified as a veterinary technician specialist in emergency and critical care in 2002 and as a veterinary technician specialist in small animal anesthesia in 2006. During her years in the field of veterinary medicine, she has had the opportunity to teach veterinary technician students and veterinary students. As a patient advocate, Katy has lectured at international meetings as well as national, state, and regional symposiums. Her work with the College of Veterinary Medicine & Biomedical Sciences has allowed her to participate in clinical trials as well as publish articles and book chapters. In her time away from work, she participates in providing online continuing education for technicians and helping to organize and instruct wet labs for student chapters of VECCS, ACVIM, and IVAPM. She has been recognized as the recipient of many awards, the most current being the TVMA 2013 Technician of the Year.