South Putnam Animal Hospital

Meet Our Doctors

Our approach to veterinary care sets us apart from other practices in the area. While we provide top-quality clinical services and feline boarding accommodations in a modern facility, it's how we deliver care to you and your pet that's different. We view bedside manner as an integral component of superior service, and strive to offer plenty of love, cuddles, and warm welcomes during every visit.

Julie Fixman

DVM, DABVP, Medical Director, & Co-Owner

Dr. Julie Fixman earned her Doctor of Veterinary Medicine degree from Cornell University in 1998. Dr. Fixman is a compassionate and committed veterinarian, co-owner, and the Medical Director at South Putnam Animal Hospital.

Dr. Fixman became Board Certified by the American Board of Veterinary Practitioners in Canine and Feline Practice in 2007 after completing additional studies and examinations to achieve board certification. Her areas of professional interest include complex internal medicine conditions, soft-tissue surgery, and ultrasound. Dr. Fixman belongs to a number of professional organizations and is a former president of the Hudson Valley Veterinary Medical Society.

At home, Dr. Fixman's pets include Callie, a Golden Retriever, Spike, an Abyssinian cat, and an ever-changing number of chickens. She has a busy family life outside of the office with her husband, son, and daughter, and when she isn't inside an ice arena being a "hockey mom," she enjoys hiking, cooking, reading, skiing, and gardening.

Rebecca Gill

Associate DVM

Dr. Rebecca Gill is the newest Associate Veterinarian with South Putnam Animal Hospital. Dr. Gill received her Bachelor of Science in Zoology with a minor in Chemistry in 2016 from SUNY Oswego. She then went on to earn her Doctorate of Veterinary Medicine in 2022 from Cornell University College of Veterinary Medicine. Dr. Gill is Fear Free Certified and was awarded Purdue University’s Center of Excellence for Diversity and Inclusion in Veterinary Medicine. Her areas of professional interest include dentistry, soft tissue surgery, and internal medicine.

Growing up around animals of all kinds, Dr. Gill never doubted veterinary medicine was her passion. At a very young age, Dr. Gill aided a sickly Jack Russell that needed her help, and ever since that case she devoted her life to providing excellent quality of medicine and helping reinforce the animal-human bond.

Born and raised in the Bronx, Dr. Gill now resides in Westchester, NY with her two domestic short hair cats, 3-year-old Zazzles and 1-year-old Sir Moo Moo. Outside of work, Dr. Gill enjoys animal and nature photography, cooking and baking, arts and crafts, reading and video games, and of course time with friends and family. Dr. Gill hopes her future consists of working with underprivileged schools to introduce and encourage children to explore science - especially veterinary medicine!

Kathi Heiber


Originally from Cleveland, Dr. Kathi Heiber earned her degree in veterinary medicine from the Ohio State University College of Veterinary Medicine in 1979. Her first few years in practice in Brewster, NY were spent treating companion pets as well as farm animals and horses.

In 1984, Drs. Heiber and Cindy Kosacz founded South Putnam Animal Hospital in its present location in Mahopac, NY. The hospital was built to provide a high standard of veterinary care that they would want for their friends and family to receive for their beloved pets. Providing owners with the best information to make care decisions for their pets has always been the hospital's goal.

Dr. Heiber is actively involved in the community, and presently serves on the Board of Directors for Cornell Cooperative Extension of Putnam County. She is also a leader with 4-H youth development programs that work with local youth interested in veterinary medicine. In addition, Dr. Heiber volunteers for AFS International Exchange Student Program welcoming students from foreign countries and supporting families who host students in their homes.

When Dr. Heiber is not practicing high-quality animal medicine or doing community service, you may find her riding her Arab Shagya mare, Lily. She also has a Jack Russell mix and two adopted cats. Dr. Heiber enjoys reading, swimming, yoga, and spending time with her husband, cooking through the seasons with fresh local produce, exploring new cuisines, and traveling.

Join the South Putnam Animal Hospital Family Today!

Located off of Route 6 and Route 6N, just minutes from Lake Mahopac and Mahopac High School.

Phone: 845-628-1834

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