small dog being inspected by vet

Taking Exceptional Care of Metro East Pets and Their Families for More Than 65 Years

At Hawthorne Animal Hospital, we see your pet as more than a patient. To us, they’re a member of the family—and just like you, we want to be sure our family members are as happy and healthy as possible! This heartfelt dedication is why our neighbors in the Edwardsville area have trusted us with their pets’ care for generations.

Started by Dr. Merill Ottwein in 1956, Hawthorne has evolved from a hometown vet clinic into a 24-hour animal hospital in Glen Carbon serving St. Louis and the entire Metro East region. Today, Hawthorne is staffed by a team of renowned veterinarians in all areas of medical care and is equipped with cutting-edge technology to improve the health outcomes of the pets we treat. Because of our focus on excellence in every area of our practice, from patient care to customer service, Hawthorne is accredited by the American Animal Hospital Association (AAHA), a designation only 12-17% of vet clinics in the U.S. currently hold.

With the addition of a second vet clinic location in Troy, IL in 2000 and The Dog House grooming and training facility in 2016, Hawthorne continues to expand our lineup of services to ensure we offer a whole-body approach to your pet’s overall well-being.

members of staff at hawthorne animal hospital

What We Value

vet chatting with a client at hawthorne animal hospital

Welcome to Hawthorne!

The team at Hawthorne looks forward to welcoming you and your pet to our growing family. To learn more about our services or to schedule a consultation with our vet staff, contact us at our animal hospital in Glen Carbon at 618.288.3971 or our pet clinic in Troy at 618.667.4900.

Hawthorne Animal Hospital Founded

Dr. Merril Ottwein began the practice in 1956 at the original building on Route 159, and created 4 additions to the original building.

original hawthorne animal hospital building


New Partner

Dr. Paul Myer becomes partner

dr paul myer portrait


New Owners

Dr. Mckinney and Dr. Myer become ownership partners

dr mckinney and dr myer become ownership partners



Troy location opens

troy location


New Location

Hawthorne leaves its original location and opens a new state of the art location.

hawthorne animal hospital current building


Emergency Services Added

Hawthorne in Glen Carbon transitions to an emergency hospital

24 hour emergency sign


The Dog House

The Dog House opens a Dog Park, Day Camp, and grooming facility.


Angel Fund Developed

The Angel Fund is developed.


Hawthorne Animal Hospital, a small animal hospital and veterinary clinic, serves St. Louis Metro East area, including the communities of Edwardsville, Glen Carbon, Maryville, Troy, Alton, Granite City, Collinsville, Highland, Wood River, Roxana, Bethalto, Godfrey, Worden, and Hamel.

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