Internal Medicine

The Internal Medicine department provides advanced diagnostics and treatment for a wide variety of internal medical problems including heart, lung, gastrointestinal, liver/gallbladder, pancreas, spleen, kidney, urinary bladder, endocrine disorders and cancer. 24-hour hospitalization is available for patients requiring intensive treatment.

• Chemotherapy treatment
• Ultrasound
• Echocardiography, Electrocardiography
• Gastrointestinal, Respiratory, Urogenital Endoscopy
• Routine & Specialized Radiography, CT/MRI scans

Oswald_GaryDr. Gary P. Oswald, a Diplomate of the American College of Veterinary Internal Medicine, is a board-certified specialist in the field of veterinary internal medicine. Dr. Oswald is a Cleveland Ohio native and received his BS and DVM degrees from the Ohio State University. He interned at Oradell Animal Hospital in New Jersey and then completed a medical residency/masters degree in Internal Medicine at Colorado State University. He is the author of multiple veterinary articles and presents continuing education series lectures throughout the United States, Caribbean, and Central America. He has been in private specialty practice since 1991 and is currently the department head of Internal Medicine and department co-head of Emergency services at Tampa Bay Veterinary Specialists & Emergency Care Center. He evaluates patients with internal medicine, cardiopulmonary, oncology and emergency problems.

Weaver_KelliDr. Kelli Weaver received her V.M.D. degree from the University of Pennsylvania. She completed an internship at Georgia Veterinary Specialists in Atlanta, Georgia and a medical residency in Internal Medicine at Tufts University in Boston, MA. She is a board-certified Diplomate of the American College of Veterinary Internal Medicine. Her special interest is in endocrinology particularly diabetes mellitus and in nephrology.




Sara M. Cowan, DVM, Diplomate ACVIM

 Dr. Sara M. Cowan, a Diplomate of The American College of Veterinary Internal Medicine, is a board-certified specialist in the field of veterinary internal medicine. She was born in Chicago, Illinois, and received her BS and DVM degrees from The University of Florida with honors. She completed her internship at North Carolina State University in 1999, and completed the Internal  Medicine residency program at The University of Tennessee. She achieved board certification in 2003, and was granted the ACVIM Resident Research Award in hematology the same year. Dr. Cowan moved to Sydney, Australia with her husband from 2004-2015. In Sydney, she worked as a specialist at the notable Small Animal Specialist Hospital, where she also taught students, interns and residents. She was an invited member of The University of Sydney Mentoring Program for the Faculty of Veterinary Science from 2010-2015. She also served the profession by regularly providing continuing education lectures to colleagues in private practice, and serving as a specialist examiner for the Australian College of Veterinary Scientists. Dr. Cowan was the Director of Infection Control and Antibiotic Use for a multi-specialist practice with a staff of over 100 people from 2012-2015. She attended a cutting-edge Masterclass on minimally invasive procedures at The Animal Medical Center in Manhattan in 2015, bringing all of this experience to Tampa Bay Veterinary Specialist when she joined the team in November 2015. Dr. Cowan enjoys all aspects of Internal Medicine, with a particular interest in blood disorders, responsible antibiotic use, and endoscopy.

Learn more about the American College of Veterinary Internal Medicine
ACVIM_LogoAmerican College of Veterinary Internal Medicine

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