Meet Our Team

Welcome to the Family!

Dr. Rupinderjit Singh D.V.M.

Dr. Singh opened Loudoun Valley Animal Hospital in July of 2013 and has been practicing veterinary medicine for over 18 years. He obtained his master’s degree in Microbiology in 1997. He has undergone post-graduate training at Boren Veterinary Teaching Hospital, at Oklahoma State University before moving to Loudoun County, VA. He has been practicing medicine since he moved into the area in 2004. His special interest is Dermatology and loves to practice evidence based medicine. He is married with 2 grown children who are in prestigious colleges. Dr. Singh loves to travel and watch sports. 

Krystina Cooper

Krystina is happily married with two furry children, a Lab mix and a Great Pyrenees. She is currently finishing up her degree in Business Administration and Entrepreneurship, in hopes to own her own business. She has worked previously at a boarding kennel, and has interned at vet offices to learn veterinary practices. Her life surrounds the love and care of animals, and she strives to assist in giving the best care available. 

Megan Crisler

 Megan began working with animals in a No-Kill shelter in Charlottesville, VA. There she discovered her passion for animals and her desire to turn it into a lifelong career. While currently working as a vet assistant, Megan will pursue her associate’s degree in Veterinary Technology at NOVA Community College. She looks forward to providing the best care possible for all clients’ pets. She is also the proud mom of 3 rescue dogs- Mille, Little Girl, and Darla- and one fat, grumpy cat named Gizmo.

Tibor Lazar, DVM, DACVS

Dr. Lazar is a board certified surgeon and met the qualification set by the American College of Veterinary Surgeons in 2003, which includes an intensive three-year surgical residency and a rigorous board certification exam. He is a surgical specialist who performs advanced orthopedic and soft tissue surgeries at Loudoun Valley Animal Hospital and other veterinary practices in the DC metro area.


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Modified COVID-19 Hours

(Applicable until further notice)


9:30 am



9:30 am

6:00 pm


9:30 am

6:00 pm


9:30 am

6:00 pm


9:30 am

6:00 pm


10:00 am

3:00 pm





Read What Our Clients Say

  • "Wow! Thanks to all the staff at Anderson Vet Clinic. I feel like you all truly love what you do! My kitty, Lola and I always have such a pleasant experience when we come in. Fortunately, it’s usually just for a check-up, but I would not leave Lola in anyone else’s hands but yours. Thank you for your caring commitment!"
    Maya Smith / Los Angeles, CA
  • "I have benefited tremendously from the care my pet received from Dr. Anderson."
    John Doe / San Diego, CA