Meet Our Team

If you’re looking for an experienced veterinarian in Arnold, you can find many of them here! Our veterinarians have decades of combined experience and are passionate about making and keeping pets healthy. See below to learn more about them, and if you’d like to schedule an appointment with a member of our team, give us a call at (410) 757-7645.

William Hemmer, DVM

Dr. Hemmer received his Doctor of Veterinary Medicine from the Virginia-Maryland Regional College of Veterinary Medicine in 1986. He completed his undergraduate studies at the University of Georgia, where he obtained a Bachelor of Science in biology and poultry science. Dr. Hemmer is the managing partner of Arnold Veterinary Hospital.

Deborah Christine Leigh, VMD

Dr. Leigh has been with Arnold Veterinary Hospital since 2000. She taught the veterinary assistant continuing education course as an associate professor at Anne Arundel Community College between 2002 and 2008. She also kicked off the first year of the Pets and Vets Program at the college’s Kids in College Summer Program in 2008. She earned her veterinary degree from the University of Pennsylvania’s School of Veterinary Medicine in 1998. Prior to earning her VMD, Dr. Leigh worked as a laboratory technician in a molecular biology lab at the Dental School of the University of Pennsylvania from 1991 to 1994. She completed her undergraduate studies at Penn State University, where she received a Bachelor of Science in biology/vertebrate physiology. Dr. Leigh is raising a family in Arnold.

Heather Hendler, VMD

Dr. Hendler joined Arnold Veterinary Hospital in March 2016. She graduated from the University of Pennsylvania’s School of Veterinary Medicine in 1996. Prior to that, she obtained her Bachelor of Arts degree in biology from Bryn Mawr College. Dr. Hendler has a special interest in feline medicine.

Carl Rogge, VMD

Dr. Rogge joined the professional staff of Arnold Veterinary Hospital in March 2014. He received his Doctor of Medicine from the University of Pennsylvania School of Veterinary Medicine. Prior to that, he completed his undergraduate degree in biology at Bucknell University and studies in biochemistry at Penn State University. He served as President of DC Academy of Veterinary Medicine and as a volunteer veterinarian at SPCA. He has been a trail veterinarian for 10 races of the Iditarod Trail Sled Dog Race in Alaska. Dr. Rogge has a special interest in geriatrics and quality of life.

John Klimavicz, DVM

Dr. Klimavicz chose veterinary medicine as a career because he enjoys the interpretive approach to the medical sciences and adores animals.  He attended Virginia Tech both as an undergraduate and for veterinary school. Soon after he began practicing medicine, he also realized his entrepreneurial tendencies. His desire to run a business of his own became a reality when he purchased his first clinic in 1992. Along with his business partner, Dr. Hemmer, Dr. Klimavicz currently co-owns and operates four animal hospitals in the Washington, DC metropolitan area.  Dr. Klimavicz regularly attends the DC Academy of Veterinary Medicine and is a member of the American Veterinary Medical Association.

As a veterinarian and business owner, Dr. Klimavicz’s mission is to provide high quality medicine while educating clients to be responsible pet owners. In addition to providing routine preventative care and working up tough medical cases, Dr. Klimavicz is also a skilled and confident surgeon. Dr. Klimavicz often comes in on his day off, just to help his associates with tough medical decisions and emergency surgeries.

Dr. Klimavicz shares his home with Mr. Pig, a french bulldog who was rescued from a foreclosing pet store and Barkley, a lovable hound.

In his spare time, Dr. Klimavicz enjoys spending time with his wife and children, crafting new business ideas into realities, practicing martial arts, going to the gym, and reading non-fiction.