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2301 Technology Dr
O'Fallon , MO 63368

P: (636) 561-9122
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The Pet Doctor

The Pet Doctor, located in O'Fallon, MO, is a full service, AAHA-accredited veterinary hospital who treats a wide range in small animal species, including poultry.

Lisa Harrenstien, DVM DACZM

Dr. Lisa Harrenstien is the owner of Avian and Exotic Veterinary Care, which she founded in April 2016. Dr. Harrenstien has 29 years of experience as a veterinarian, including employment in private small animal/exotics practice, university exotics practice, postdoctoral training in zoological pathology, consultant work related to avian and exotic species, and zoo practice. She was an associate veterinarian at the Oregon Zoo for 13 years, and is a Board Certified Specialist in Zoological Medicine(TM), an ACZM Diplomate. The ACZM is the American College of Zoological Medicine, which is the veterinary specialty organization related to the care of avian/exotic companion animals, as well as free-ranging wildlife and animals in zoological facilities. Dr. Harrenstien was the first veterinarian in Oregon to have achieved this specialist ranking, and remains the only private practice veterinarian in the Pacific Northwest with this status.