Our Team

We are proud to be a Fear Free Certified practice! At South Branch, all doctors and staff are trained and certified in Fear Free techniques to make your pet’s visit to the vet a less stressful one.

Dr. Elizabeth Pope, Fear Free Elite Certified

Dr. Elizabeth Pope, Fear Free Elite Certified

Owner/Veterinarian

Dr. Elizabeth Pope grew up in NJ with the dream of pursuing a career caring for animals. She is a graduate of Oklahoma State University, Center for Veterinary Health Sciences where she met her husband, Nick, a fellow veterinarian. After graduation, they returned to the Garden State and they reside in Hunterdon County with their beautiful baby boy, Benjamin, two spoiled dogs, Eloise and Brody, and a small herd of cows, goats, and chickens. Dr. Pope treats small animals and has a personal interest in internal medicine, rescue work, preventative care, and oncology.

Dr. Catherine Rotsides, Fear Free Certified

Dr. Catherine Rotsides, Fear Free Certified

Veterinarian

Dr. Catherine Rotsides was born and raised in Morristown where her love for animals began. She attended Stevens Institute of Technology where she graduated with an undergraduate degree in chemical biology before continuing on to veterinary school. She earned her DVM from St. George’s University in Grenada and then completed an internship in small animal medicine and surgery at Garden State Veterinary Specialists. She stayed on as an emergency doctor for two years, then continued her emergency career at a hospital in Westfield before joining the South Branch Family. 

Dr. Rotsides has a special interest in cardiology, surgery, and emergency medicine. In her spare time, she has a passion for soccer and traveling. She also enjoys spending time at home with her husband, son, and two ninja cats, Jackie Chan and Bruce Lee.

Dr. Emily Denning, Fear Free Certified

Dr. Emily Denning, Fear Free Certified

Veterinarian

Dr. Denning was born and raised in New Jersey, where she was an avid equestrian and surrounded by animals, fueling her drive to become a veterinarian. She received her bachelor of science degree from Penn State University and went on to receive her DVM from Midwestern University in Glendale, Arizona, graduating with multiple awards. 

Dr. Denning’s veterinary interests include internal medicine, wound management, and preventative care. Outside of work, Dr. Denning enjoys spending time with her husband and their cat, Nelson.

Dr. Nick Pope

Dr. Nick Pope

Veterinarian

Dr. Nicholas Pope grew up on a farm in Oklahoma knowing he wanted to be a veterinarian from day one, and earned his DVM from Oklahoma State University.  Dr. Pope’s grandmother was the office manager of a multidoctor clinic in his hometown, inspiring his desire for owning and operating veterinary hospitals and beginning his lifelong involvement in the veterinary industry.  

Dr. Pope is passionate about delivering exceptional patient care, leadership development of his team members, and practice management.  He loves living in beautiful Hunterdon County on a small farm with his wife Elizabeth, son Benjamin and all his animals.  When not at any of the practices you can find him either fishing the Raritan, golfing, or driving around admiring his cows. 

Dr. Jamie Ulassin

Dr. Jamie Ulassin

Dr. Jamie Ulassin was born and raised in Basking Ridge, New Jersey. She grew up riding horses, which is where her love for animals initially began. She attended the University of Pittsburgh, where she obtained her bachelors in Biology and a minor in Chemistry. She then went on to obtain her VMD at the University of Pennsylvania in Philadelphia.

Dr. Ulassin has a special interest in small animal soft tissue surgery, dentistry, and internal medicine. In her spare time she loves hiking, horseback riding, and spending time with her husband, and her two dogs; a Chow Chow named Sarge, and an American Bully named Harley.

Matthew Klitsch, Fear Free Elite Certified

Matthew Klitsch, Fear Free Elite Certified

Certified Veterinary Technician

Matt joined our team in 2013 and comes from a diverse background of working with animals. He spent six years as a lead-volunteer with a local wildlife rehabilitator. Matt also worked in a local animal shelter as an animal care technician and is an NJ certified animal control officer. Matt holds a B.A. from Montclair State University, an M.F.A. from Drew University, and an A.S. in Veterinary Technology from Penn Foster. He lives in Hunterdon County with his cat and rat (Celes and Locke, respectively).

Diana Buhl, Fear Free Elite Certified

Diana Buhl, Fear Free Elite Certified

Certified Veterinary Technician

Diana, a graduate certified veterinary technician, has been with South Branch since 2007 and is our Head Veterinary Technician. She is a graduate of the Veterinary Technical Institute in Pennsylvania and holds a B.A. from Boston University. Diana has over ten years experience in small animal hospitals and emergency and surgical veterinary medicine. Diana lives nearby with her husband and their dog and cat.

Samantha Whitmore, Fear Free Elite Certified

Samantha Whitmore, Fear Free Elite Certified

Veterinary Assistant

Samantha is one of our veterinary assistants and has been a member of our team since 2011. She has experience working with a wide variety of exotics; including lizards, frogs, rodents, ferrets, and chinchillas. She has previously volunteered in a local animal shelter and spent a summer working with equines at a riding camp. Samantha lives nearby with her beloved rabbits: Chicken Nugget, Waffles, and Guala Stomps

Helan Thomas

Helan Thomas

Veterinary Assistant

Helan received her BS in Biology and a BA in Environmental Studies from Seton Hall University. In her free time she works at a local avian rehabilitation center, does bird banding, and enjoys playing with her cats, Moon and Orio.

Rebecca Wolf

Rebecca Wolf

Veterinary Assistant

Rebecca joined the South Branch team with six years of experience at a local feline sanctuary. She obtained a B.A. in Communication, but had always wanted to be involved with veterinary medicine since the age of 8. Growing up, Rebecca had 13 guinea pigs over many years. She currently shares her home with three cats, Eno, Ari, and Archer.

Brooke Maziarz

Brooke Maziarz

Veterinary Assistant

Brooke grew up in Hunterdon County surrounded by cats and dogs. She spends her free time spoiling her dog Lilybelle and volunteering at a local wildlife center.

Diane Fitzpatrick, Fear Free Elite Certified

Diane Fitzpatrick, Fear Free Elite Certified

Client Service Representative

Diane joined our team in 2016 and brings a great deal of invaluable experience to the South Branch team. She holds a B.S. in Animal Science from Rutgers University and spent over 15 years working in Rutgers animal research labs. She worked as an overnight emergency vet assistant for several years before deciding to transition to a front desk role. Diane has experience with many types of animals from pocket pets to horses to poultry. She spends her free time tending to her flock of sheep and spoiling her dog and amazon parrot.

Alyssa Homeier

Alyssa Homeier

Client Service Representative

Alyssa grew up in Tennessee and earned a BS in psychology at UT Chattanooga before moving to New Jersey in 2018. She worked as a home healthcare aide for seniors before joining the South Branch team. Growing up, she had a variety of pets ranging from cats and dogs to newts and guinea pigs. Now she lives in Hunterdon County with her beloved cat Cookie and her other cat Cocoa Bean.

Denise Dalmas

Denise Dalmas

Client Service Representative

Fear Free Certified. Has lived in Hunterdon County, NJ since 1990. Riding horses from a very young age in Oklahoma, always has had a love for animals. Married for 28 years with two adult children. Loves spoiling her Jack Russell Terrier, Benji, and two cats, Molly and Chloe.