Meet the Team

Dr. Nathaniel Ban

dr-nathaniel-ban.jpg I am originally from South Korea and received my Doctors of Veterinary Medicine (DVM) at Seoul National University on Mar, 2000. I also received Master’s Degree in 2002. Following school, I had worked as a chief of staff at a department of internal medicine of referral animal hospital in Korea for about five years. Since becoming a California licensed veterinarian, I have always made it a priority to keep up with the most up to date medical advances by attending veterinary medical conferences in order to deliver most accurate diagnosis and effective treatment for my patients as well as serving our clients. I also completed an externship at Animal Medical Center in New York, one of the largest postgraduate veterinary medical training hospitals in the United States. I was fortunate to have worked with 28 board-certified veterinarians, 15 interns and 20 residents at three different departments including internal medicine, critical care and emergency as well as soft tissue surgery. It was great and fantastic experience to me and definitely helped me to develop next stage of veterinary medicine.

My professional interest includes internal medicine such as endocrinology, hematology, gastroenterology, dermatology, cardiology, soft tissue surgery, dentistry and all preventive care. Preventive care is the most important veterinary field to keeping our pets healthy and living longer, happier lives. I currently live with my wife, two sons and one dog, Lilly. I love playing baseball and soccer with my children on my day off. I try to work out on a regular basis because I truly believe well balanced lifestyle makes a huge difference in my practice. My goal is to provide the best health care of your pets. I look forward to serving you and your family!

  • Debbie Liebman (Practice Manager)
    I'm born & raised here in Southern California. I ride horses, love animals and spending time with my golden retriever. I've enjoyed working at Roswinn Pet Hospital for 25 years.
  • Alyssa Brandau (Veterinary Assistant)
    Alyssa is from the San Fernando Valley and is currently studying to become a registered veterinary technician (RVT) with hopes of graduating in 2017. She loves all animals including reptiles and other exotics. Her hobbies other than animals include singing, acting, swimming, and the occasional shopping at the mall.
  • Jin S. Kim (Veterinary Assistant)
    Jin is a fairly new addition to Roswinn Pet Hospital. She is originally from S. Korea. She studied Biological Science at GCC and Animal Science at UC Davis. She worked as a professional pet groomer for about 5 years. She has various animal-related experience with dogs, cats, reptiles, avians, fishes and large animals such as horses. She has a passion for the veterinary medicine. So, she intends to keep studying and become a veterinarian. Her hobbies are crafting, watching movies and snowboarding.
  • Angela Kim (Veterinary Assistant)

    She is currently attending CSUN to pursue her Bachelor in Biology and plans on continuing her studies to become a veterinarian. Her hobbies consist of snowboarding, drawing, and enjoying the company of her two dogs, Param and Jinee

  • Isabel Kim (Kennel Assistant)
    Hello, I’m Isabel Kim, a student currently attending Granada Hills Charter High School.
  • Bumblebee (Hospital Cat)

    Bumblebee (AKA Nyangee) is our official Hospital Cat! She was brought to Roswinn in April of 2019 as a stray. She is very friendly, courageous, and love cat treats. Her favorite activities include: jumping on counters for attention, playing with her feather toy, approaching large dogs and lounging on her cat condo. Bumblebee often comes to the front reception area so make sure you say hello!

$15 OFF First Visit for All New Clients!


Office Hours


8:30 AM-6:00 PM


8:30 AM-6:00 PM


8:30 AM-6:00 PM


8:30 AM-6:00 PM


8:30 AM-6:00 PM


8:30 AM-4:00 PM