About Us

Exceptional veterinary care, tailored services, and compassionate treatment for your pets.
doctor checking small cat

Full-Service Veterinary Hospital in Sterling

Heritage Animal Hospital is a locally owned animal hospital where your pet feels comfortable and receives exceptional care.

Our Goal

Our goal is to be your partner in pet parenthood.
cute black pug at heritage animal hospital
women looking happy while spending time with her cat
happy dog at heritage animal hospital

Great Location

We are proud to serve the communities of Sterling, Herndon, Sterling Park, Countryside, and the surrounding areas.

Our Team

Our dedicated team cares for you and your pet

Dr. Sunil Kakarla

Dr. Sunil Kakarla

DVM, PH.D, Owner

Dr. Sunil Kakarla, an experienced and compassionate veterinarian in Cary, NC, grew up in India. After graduating from the College of Veterinary Medicine in India, he practiced as a companion animal veterinarian for five years in a metropolitan city in India. He moved to the United States in 2005 with a passion for practicing high-quality veterinary medicine in an advanced setting. During that process, he pursued his MS and Ph.D. in a renowned lab at Marshall University in West Virginia.

As a graduate student, Dr. Kakarla performed cutting-edge research and had several high impact publications to his credit. While pursuing graduate studies, he simultaneously completed the North American Veterinary Licensing Exam (NAVLE) in 2010.
Soon after this accomplishment, he began volunteering at several local animal hospitals. He completed his clinical experience program and obtained his license to practice in the US the same year.

In 2011, after graduating with a doctoral degree, he joined a small animal practice in Durham/RTP where he established a huge clientele and treated about 6000 to 7000 pets per year.

With his continued passion to provide the best quality veterinary care, he joined the state-of-the-art Walnut Street Animal Hospital in June 2016. As a veterinarian in the RTP area of NC, he strongly believes in quality care for pets and in being available to his patients when needed.

Sunil Kakarla is a member of the American Veterinary Medical Association and has special interests in dermatology and soft tissue and orthopedic surgery, as well as emergency medicine. Dr. Kakarla is married and has a son and a daughter. He enjoys spending quality time with his family, including his 1-year-old Golden-Doodle, Brownie, and a 4-year-old Poodle, Milky. He enjoys serving his community by actively helping rescue groups and shelter pets, and in his free time, he plays volleyball.
Dr. Raam Krishna Karanam

Dr. Raam Krishna Karanam

Veterinary Director & Chief of Operations

After graduating from the College of Veterinary Medicine in India, he practiced and managed a companion animal hospital for twenty years. He moved to the United States with a passion to work as an associate in advanced-setting animal hospitals. His main aim is to cultivate a positive, happy, and inclusive working environment for the staff, providing a friendly and welcoming environment for all the clients. Outside of work, he enjoys spending time with his better half, Jyotsna, and their two children, Bhuvan and Rutvi.
Dr. David Iskandar

Dr. Syamsundar Gaddamanugu

Chief Veterinarian

Dr. Syam is originally from India, where he developed a love for caring for animals! In India, he received his Bachelor of Veterinary Medicine and Surgery degree and worked mostly with large animals for over 8 years before coming to the United States in 2008. In 2011, he received his master’s degree in Molecular Avian Biology from the University of Delaware. Dr. Syam has a strong interest in both surgery and diagnostic imaging, and he is experienced in soft-tissue and bone surgical procedures. He has been working in Northern Virginia for 6 years and has Emergency Veterinary experience. He is fear free certified, and he received an award in 2018 for Best Veterinarian in Northern Veterinarian magazine. Outside of work, he enjoys painting and gardening. His wife is an IT consultant, and together they have two children.
Dr. Hamid Moghal

Dr. Hamid Moghal


Dr. Moghal received his Doctorate in Veterinary Medicine from UVAS in 1971. He taught in the teaching hospital at King Faisal University, KSA for three years - and worked for USDA for two years. He has worked here at Heritage Animal Hospital in Sterling, VA.
Sarah Van Staalduinen

Sarah Van Staalduinen

Administrative Director

Sarah is an NC State graduate with double majors in Animal Science and Applied Nutrition. She has lived with animals her entire life and has always had a special place in her heart for them. She has been with the company since 2019, and she loves her job. Not only does she have the opportunity to meet new people and pets on a daily basis, but she also gets to help those fur babies stay happy and healthy with their families. Her favorite things to do outside of work include spending time with her furry kiddos; two dogs named Ochi and Denali, and two cats named Juniper and George. When she’s not at work, you can find her hiking with her dog, or taking part in any other activities in which she can include them.
Caitlin O’Neil

Caitlin O’Neil

Client Coordinator

Hello! My name is Caitlin, and I have been with Walnut Street Animal Hospital since 2017. I started out as a receptionist and after being with this practice for a year, I was promoted to Manager and transferred to our sister location, Capital Boulevard Animal Hospital. I absolutely loved the experience of opening a new clinic and getting acquainted with all of the rescues. I am excited to start my new role as Client Coordinator with the company. I have always loved working with clients and making sure the owner and furbaby have a positive experience. In my free time, I am with my 2 human kiddos as well as my own furbabies.
Reeta Rehman

Reeta Rehman

Practice Manager

Hi! My name is Reeta and I have been working at Heritage Animal Hospital since 1999. After initially pursuing a long and successful career in Business and Hotel Management, I decided that my true passion was in the care and service of animals. I have had pets for most of my life and have always felt a special connection to my pets. As an Administrator/Manager of Heritage Animal Hospital, I have had the opportunity to interact with many families and their pets and helping to ensure that each pet gets the best quality health care brings me utmost joy. In my free time, I enjoy spending time with Family,(including all the fur babies in the family) traveling, event planning, music, fashion, reading and needlepoint.
Kira Fowler

Kira Fowler

Veterinary Assistant

I have been working at this hospital for almost 3 years and really enjoy getting to know about each pet that comes through the door. I have been working with animals for 5 years all together and wouldn’t trade it for anything! In my free time I enjoy taking my Yorkshire terrier Brody for walks on the trail behind my complex. I look forward to getting to know you and your pet!
Lesley Sanchez

Lesley Sanchez

Veterinary Assistant

Lesley is currently pursuing her Bachelor’s degree in Biology at George Mason University. Animals have always had a special place in Lesley’s heart. She currently has a well-loved munchkin mix named Pancho who follows her everywhere. She is bilingual in English and Spanish and is able to communicate with clients regarding their concerns. With that in mind, she aspires to become a veterinarian one day.
jack russell terrier stands at grass

Veterinary Care in Sterling

Your destination for quality veterinary care in Sterling

Heritage Animal Hospital provides top-quality veterinary care for dogs and cats in Sterling, Herndon, Sterling Park, Countryside, Potomac Falls, Ashburn, Reston, and the surrounding areas.
logo Heritage Animal Hospital
Heritage Animal Hospital provides loving, high-quality veterinary care for dogs and cats in Sterling.

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Mon - Sat: 8am - 7pm
Sun: 12pm - 6pm