
Fear Free Certified
It’s official: The Pet Doctor is a Fear Free Certified veterinary practice! We’re also St. Charles County’s only American Animal Hospital Association (AAHA)-accredited hospital!
Our Mission
Using patient-focused care and low-stress handling techniques to protect and enhance the bond between people and their pets.

Our strong work ethic is established by maintaining a compassionate and devoted staff of veterinarians, registered veterinary technicians, veterinary assistants, and kennel assistants. We are committed to client education, individualized preventive health care and the diagnosis and treatment of disease.
Watch our video and get a dog’s eye view of our O’Fallon location!
Pain Management and Physical Rehabilitation
The Pet Doctor is proud to open the first Center for Pain Management and Physical Rehabilitation in our area. Working to help our patients find freedom from pain is very important to us. We want our patients to have the very best quality of life that they can and our pain management services can help pets live life to the fullest!

American Animal Hospital Association (AAHA) Accredited
We are proud to be part of this accreditation. Only 15% of veterinary hospitals in North America are accredited by AAHA and reach this high quality of care.

Compare Your Pet Insurance Options with Ease
Click the button below to compare the various options and make the best decision for your family.
Shop at Our Online Store!
Click the button below to explore the various products we offer for your pets:
Thank you for all your kind words!
I wanted to update my review. Previously on here, I mentioned that I had a sub-par visit at The Pet Doctor. I have to say that I spoke with the staff and Dr. Hammerle and I have never felt more valued as a customer. She called me personally to discuss the issue and it was resolved very fast. Nara LOVES the staff there and they have the best interest at heart. I have never been treated so well by a vet clinic.
Dr. Hammerle values every client and looks at building a lifetime client and I will take my current, and future pets to The Pet Doctor.
Thank you for seeing Nara and thank you for making me feel like I have a voice within your company. I know you and your staff genuinely care for my dog and what is best for Miss Nara.