Meet Our Team

Dr. Russell Greene is board certified in both Small Animal Internal Medicine and Bacteriology & Mycology. Dr. Greene is a 1983 graduate of the School of Veterinary Medicine at the University of California, Davis. He completed his small animal medicine & surgery internship at Texas A & M University, and completed his small animal internal medicine residency at North Carolina State University. While at NCSU, he obtained his PhD in Veterinary Microbiology. He then went on to do post-doctoral work in bacteriology, in Germany. In 1988, Dr. Greene became board certified in Small Animal Internal Medicine, and the following year he became board certified in Bacteriology & Mycology.

Dr. Greene has taught at the College of Veterinary Medicine at North Carolina State University; has worked as an Internal Medicine Consultant at Southwest Veterinary Diagnostics; and has run two veterinary microbiology laboratories. He has spoken at both national and international veterinary conferences. In addition, he has authored numerous publications, including the chapter on Coccidioidomycosis (Valley Fever) in the text, Infectious Diseases of the Dog and Cat. Dr. Greene has been providing internal medicine consultations and special procedures (ultrasound, endoscopy, stent placement, and other interventional procedures) to Arizona veterinarians in the Greater Phoenix Metropolitan Area and the Prescott region since 1992—longer than any other small animal internist in the area.

Dr. Shery Babyak is board certified in Small Animal Internal Medicine. She received both her Bachelor of Science (1988) and DVM (1992) degrees from Colorado State University. She then completed a rotating medicine and surgery internship at Oklahoma State University, and a small animal internal medicine residency at Louisiana State University. In 1997, Dr. Babyak became board certified in Small Animal Internal Medicine. Dr. Babyak began her Internal Medicine career in Las Vegas and practiced there for 5 years. In 2002, she moved to the Phoenix metropolitan area, where she worked locally as a staff internist for 18 years, prior to joining PVIMS.

Dr. Greta Heidner serves as the Hospital Director. Here, she is holding Harry, one of our hard-working office cats. She and Dr. Greene are married, and they have one son. As a small specialty practice, with long-time employees, PVIMS is able to provide our referring veterinarians and clients with a level of responsiveness and personal service that may be lacking in a larger practice setting.

Dr. Heidner is board certified in Oncology. She is a 1983 graduate of the School of Veterinary Medicine at the University of California, Davis. She completed her small animal medicine & surgery internship at the University of Illinois, Urbana, and completed her clinical fellowship in Oncology at North Carolina State University. In 1993, Dr. Heidner became board certified in Oncology. She has worked as a Clinical Instructor in Oncology at NCSU; at several small animal general practices; and at her own oncology specialty practice. Dr. Heidner brings her expertise to PVIMS.