PetCentre Animal Hospital

8307 Yorkshire Lane
Manassas, VA 20111


Dr. Eric Johnson, Medical DirectorDr. Eric Johnson, Medical Director

Dr. Johnson attended Virginia Tech, where he received a Doctorate in Veterinary Medicine and a Masters of Science degree in Zoology.  He attended the University of Virginia for for a Bachelor of Science degree in Biology.  Dr. Johnson has been with the PetCentre family since 2005.  He enjoys general surgery and internal medicine.

Dr. Johnson supports a work-life balance and when he is not working with animals, he finds time for river kayaking, camping, music, gardening and volunteering; and, playing with the dog and cats, of course!


Dr. Susan KirkDr. Susan Kirk

Dr. Susan Kirk is a Fairfax native and graduate of Virginia Tech, where she received her Doctor of Veterinary Medicine and undergraduate Bachelor of Science degree in Biology.  She joined the PetCentre team as a part-time associate in December 2017. She enjoys preventative care as well as complex medical cases and has a special place in her heart for senior pets.  When Dr. Kirk isn't working, she can be found spending time with her husband, Ken, and their two rescue dogs and two cats.  She particularly enjoys exercising (swimming and boxing), hiking, baking, and knitting. 


Dr. Marta AchaDr. Marta Acha

Dr. Acha attended Virginia Tech, where she received a Doctorate in Veterinary Medicine.  She has been caring for PetCentre pets as a part-time relief veterinarian since 2005.

 Dr. Acha is passionate about healing and resolving pain in her patients.  She is happy when the caretaker and patient are both happy.  She enjoys travel and meeting new people and cultures.  She loves to cook and find out about new wines.  Her favorite sports are skiing, volleyball, bicycling and hiking.  She also enjoys water sports, especially jet skiing.  


Dr. Tibor Lazar/Lazar Veterinary Surgery (Consulting Surgeon)Dr. Tibor Lazar/Lazar Veterinary Surgery (Consulting Surgeon)

Diplomat, American College of Veterinary Surgeons

Dr. Lazar grew up in Fairfax County, graduated from Robinson High School in 1987, and received his BA in biology at the University of Virginia in 1991.

He earned a Doctor of Veterinary Medicine degree in 1996 from the Virginia-Maryland Regional College of Veterinary Medicine. In 1997, he completed a one-year rotating internship in small animal medicine and surgery at the Animal Medical Center in New York City.

Following a year of private practice in Manhattan, Dr. Lazar moved to Maitland, Florida, and spent four years in a small animal surgery internship and residency at Affiliated Veterinary Specialists. In 2003, he earned board certification by the American College of Veterinary Surgeons.

Since 2002, Dr. Lazar has focused on small animal specialty surgery in Northern Virginia. He lives in Reston with his wife, two sons and a plethora of pets including dogs, cats, birds, snakes and fish.

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