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  • Core Veterinary Services, O’Fallon
    Core Veterinary Services, O’Fallon

    Meeting All Your Pets' Health Care Needs

    Our team offers all the core veterinary services your pet needs to stay healthy, from preventive wellness exams and vaccinations, to dental care, internal medicine, and senior pet care.

    Core Care

  • New Patients Welcome, O’Fallon
    New Patients Welcome, O’Fallon

    Welcoming New Patients in St. Charles & St. Louis Counties

    At Gentle Doctor Animal Hospital, we are committed to offering compassionate care to each of our patients. We welcome you and your pet into our veterinary family.

    Patient Info

Welcome to Our O’Fallon Animal Hospital

Gentle Doctor Animal Hospital is a full-service vet clinic that offers comprehensive medical services for cats and dogs in O’Fallon, MO and the surrounding areas.

From preventive care and surgery to veterinary dental care, our broad and varied service offering can meet all of your pet’s health needs in one place.

We care for companion animals in St. Charles & St. Louis Counties and have developed a reputation over the years for quality, professional care with a compassionate touch.

Whether you are bringing your pet in to see us for the first time, or have been counting on our veterinary team for years, we will treat your animal as if it was our own.

About Our Hospital

Dental Care, Gentle Doctor Animal Hospital, O’Fallon

Dental Care

Keep your pet's oral health sterling with our veterinary dental services. 

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Wellness Exams, Gentle Doctor Animal Hospital, O’Fallon

Wellness Exams

Routine exams are a critical component of your pet's healthcare routine.

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Preventive Care, Gentle Doctor Animal Hospital, O’Fallon

Preventive Care

Vaccinations and parasite prevention medicine to keep your pet healthy.

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Veterinary Surgery, Gentle Doctor Animal Hospital, O’Fallon

Veterinary Surgery

We perform a variety of surgical procedures for cats and dogs.

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  • We were in a desperate position with a sick pet over the holidays. Gentle Doctor Animal Hospital came through for us. Thank you so much! We're glad we can count on you to care for our pets.
    Debbie K

Gentle Doctor Animal Hospital, O’Fallon

Senior Pet Care, Gentle Doctor Animal Hospital, O’Fallon

Senior Pet Care

Geriatric pets have unique vet care needs, we make the effort to meet these unique challenges faced by aging pets.

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Puppies & Kittens, Gentle Doctor Animal Hospital, O’Fallon

Puppies & Kittens

The first year is a crucial time for building a strong healthcare foundation. Our animal hospital helps new pet owners get their puppies and kittens off to a great start.

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Gentle Doctor Animal Hospital, O’Fallon

Urgent Care, Gentle Doctor Animal Hospital, O’Fallon

Urgent Care

An emergency situation can arise anytime without notice. Our veterinarians step up to provide urgent care for O’Fallon cats and dogs in need whenever we can.

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Diagnostics & Lab, Gentle Doctor Animal Hospital, O’Fallon

Diagnostics & Lab

Our on-site state-of-the-art veterinary laboratory grants us the opportunity to make quick and accurate diagnoses which allows for more effective treatment.

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Tips & Advice From Our Team

Whether you are looking for advice about parasite protection or information on common pet illnesses, our informative blogs feature helpful tips and advice from our O’Fallon vets that will help you to keep your pets healthy and happy.

Inflammatory Bowel Disease in Dogs - Life Expectancy

Inflammatory Bowel Disease in Dogs - Life Expectancy

At Gentle Doctor Animal Hospital, our vets often treat dogs with inflammatory bowel disease (IBD). And while there is no cure for this condition, in many cases IBD can be managed successfully. Here, we look at the prognosis for dogs suffering from IBD. 

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Chronic Pain in Dogs

Chronic Pain in Dogs

Dogs that suffer from chronic pain experience a serious decline in quality of life, yet the signs of chronic pain can be difficult for even the most attentive pet parents to spot. Here, our O’Fallon vets discuss chronic pain in dogs, the signs, and treatments that can help your dog live more comfortably.

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Osteoarthritis in Dogs

Osteoarthritis in Dogs

Osteoarthritis is a progressive, degenerative condition in dogs that becomes more severe over time. There's no cure for this painful condition, however, our O’Fallon vets can provide treatments that may help manage symptoms and allow your dog to enjoy a good quality of life as they age.

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The FVRCP Cat Vaccine

The FVRCP Cat Vaccine

At Gentle Doctor Animal Hospital our vets believe that prevention is the key to helping your cat live a long and healthy life. That's why our O’Fallon vets recommend that all cats receive the FVRCP vaccine. Here's how the FVRCP protects your cat's health.

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New Patients Welcome

Gentle Doctor Animal Hospital is accepting new patients! Our experienced vets are passionate about the health of companion animals in O’Fallon and surrounding communities. Get in touch today to book your pet's first appointment.

Contact Us


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    • Monday: 07:30 am - 06:00 pm
    • Tuesday: 07:30 am - 06:00 pm
    • Wednesday: 07:30 am - 06:00 pm
    • Thursday: 07:30 am - 06:00 pm
    • Friday: 07:30 am - 06:00 pm
    • Saturday: 08:00 am - 01:00 pm
    • Sunday: Closed

(636) 272-5950 Contact