We understand the special role your pet plays in your family, and we are dedicated to becoming your partner in your pet’s health care. We treat your pet as we would our own. Our goal is to practice the highest quality medicine and surgery with compassion providing an emphasis on client education.

Our entire healthcare team is committed to providing personal attention to the unique concerns of each individual pet owner.

Riverbank Veterinary Clinic in Johns Island, SC is a full-service companion animal hospital. It is our commitment to provide quality veterinary care throughout the life of your pet. Our services and facilities are designed to assist in routine preventive care for young, healthy pets; early detection and treatment of disease as your pet ages; and complete medical and surgical care as necessary during his or her lifetime.

Thank you for taking the time to read about our veterinary practice and the services we offer. We welcome your comments and suggestions. Please contact us at (843)277-2250 for all your pet health care needs.


Dr. Linnea Bredenberg

Dr. Linnea Bredenberg was born in Baltimore, MD, but grew up in upstate New York near Syracuse. She received her undergraduate degree at Wellesley College before moving to South Georgia in 1992 where she attended school. She then enrolled in UGA Veterinary School to work on receiving her doctorate. She met Billy (Dr. Roumillat) in 1998 in her senior year of vet school and graduated in 1999 from UGA. They then moved to the Low Country in 2000 where Linnea started veterinary work locally, and she and Billy were married in 2001 (the secret is out!). After years of practicing veterinary medicine together, in March of 2012, Linnea and Billy proudly opened their own practice together. The clinic and their children keep them busy. Linnea’s theory is “Who needs hobbies if you have 2 kids and 16 animals to take care of?” But in any spare time, Linnea does find she tends to her orchard and garden.


Dr. Billy Roumillat

Dr. Billy Roumillat, a James Island native, received his undergraduate at Clemson with a degree in biology. He then received his veterinary degree from St. Georges University School of Veterinary Medicine. After attending school, he and Linnea (Dr. Bredenberg) moved back to Charleston in 2000. Both Billy and Linnea practiced veterinary medicine for over ten years. He and Linnea then opened Riverbank, their own state-of-the-art veterinary practice on Johns Island. Billy and Linnea live on Johns Island with their two children, William and Blynn. Billy’s love for animals translates into his work as well as his home life; he and his family have 10 chickens, 2 goats, 2 horses, 3 dogs, 2 cats, and fish. Billy’s hobbies include cooking, enjoying music, spending time with his family, and water sports.


Debbie Roumillat

Business Manager

Debbie, our fearless leader, has extensive experience in the banking industry. A lifelong Charlestonian, she reigns from West Ashley, but now lives on Johns Island with her husband, Bill (her high school sweetheart!). Debbie enjoys spending time with her son, Billy (Dr. Roumillat), her daughter, Beth, and her five grandchildren. When not managing the clinic finances or keeping the staff in line, Debbie enjoys cooking, water sports, hiking, and gardening. Debbie is new to the veterinary field but loves her job, and especially enjoys meeting clinic patients and their owners.


Lindsay Simmons

Customer Service Manager, Veterinary Technician

Lindsay, originally from Atlanta, GA, is a 22-year veteran of Charleston. Lindsay has over 21 years of experience in the veterinary field. Outside of work, Lindsay enjoys outdoor activities, cooking, reading, tending her garden and houseplants, and spending time with her husband, Doug, and two kids, Douglas, and Laila, as well as her four-legged kids: Mac, a Beagle-ish mix, Roux, a mix, and 2 cats, Fin and Nacho.


Jami Lascoskie

Customer Service Representative

Jami is originally from a small town in Pennsylvania who came to Charleston in search of furthering her biology interests. She attended Millersville University for marine biology, spent five years pursuing that in Alaska, and found herself wanting something different. Multiple fur babies later, she found what she was looking for in veterinary medicine. She is currently a customer care representative but would like to pursue studies in veterinary medicine. She enjoys anything outdoors, going to the beach, and spending time with her fiancé Carson and their three fur babies.

Their four-legged kids include: Astro, an energetic Lab mix, Dewey, a loving Pit mix, and Nova, a sweet terrier mix.


Summer Buck

Office Manager, Licensed Veterinary Technician

Summer graduated from Trident Technical College in 2008 with a Veterinary Technology degree, but has over 18 years of veterinary experience, and is a member of the South Carolina Association of Veterinary Technicians. Originally from Greenville, Summer moved to Charleston in 2006. In between work and traveling, she spends time with her husband Ryan and four fur babies: Rose, an Irish Setter, Timba, a Siamese mix, Benny, a Boxer mix, and Petunia, a lab mix. Summer enjoys vacationing, reading boating, and growing orchids.


Rosalinda “Rosie” Holmgren

Head Technician, Licensed Veterinary Technician

Rosie was born in Chicago, IL, but being in a military family caused her family to move frequently to different places along the east coast. Rosie has called South Carolina home for the past 29 years, and she graduated from Trident Technical College in 2006 with her Associate’s degree in Veterinary Technology. Rosie and her husband Gregg have two four-legged children they enjoy spending their time with as well – Winston, a Bassett Hound, and Jazz, their Siamese kitty. In her spare time, a day trip to Disney World is not out of the question either.


Katrina Dempsey

Veterinary Technician

Katrina is no newcomer to the veterinary business and has 26 years of experience. Originally from Georgia, Katrina moved to Charleston shortly after hurricane Hugo. She got into animal medicine because she wanted to make a difference in animal welfare, and she has been doing so since then. Katrina lives with her husband, Sam, and her daughter, Georgia. Katrina enjoys horseback riding in her spare time and has a small crew of animals of her own: 2 cats, Henry and Lil Bit, a Labrador, Finn, and Dee Oh Gee the horse.


Brianna Foster

Licensed Veterinary Technician

Bri, a Charleston native, has graduated from Trident with a Veterinary Technology degree in 2021. She enjoys spending time with her husband Kyle, camping, hiking, and searching for waterfalls. Bri has two fur kids: Colonel (with the cutest curly tail), and Captain her sweet cat. In addition, Bri has a tarantula named Tulip as well as several fish tanks.


Megan Young

Licensed Veterinary Technician

Megan, originally from Virginia, went to college at Coastal Carolina and has been in South Carolina since 1997. She went to Trident Tech in Charleston to obtain her vet tech degree and graduated in 2006. She has much veterinary experience under her belt as she is a 17-year veteran in the field. She started in veterinary medicine because of her love of animals as well as her compassion to educate clients about their pets. Her time not spent at work is spent gardening, cooking, and chasing her daughter and their cat, Rocket Clover.


Allyson Borrero

Customer Service Representative

Allyson, a Charleston native, is newer to veterinary medicine but has years of experience working with animals. Allyson has 5 dogs and 2 cats of her own at home along with the newest family addition, her son, Liam. During her free time outside of work, Allyson enjoys spending time with her family, taking her pups for walks on the beach, getting messy in the kitchen and catching up on the latest Netflix documentaries.


Cat McLaurin

Veterinary Technician

Cat, born and raised in Charleston, has been working with animals since a young age. She started off working with horses as a riding instructor. She taught children how to properly care for horses then progressed to training racehorses. She then transitioned to working at veterinary clinics with animals a bit smaller than horses. Cat is certified in Biosecurity and has received Humane Officer Training with the CDC and Oklahoma State University. She will attend Trident Tech’s Veterinary Technician Program in the fall. Being an animal lover, Cat shares 8 four-legged kids at home with her husband, Andrew.