About Us

Affordable, Compassionate and Modern care for your pet in Chicagoland.

About Us

Affordable, Compassionate and Modern care for your pet in Chicagoland.

As a pet parent, you know there are many ways your pet communicates unconditional love and trust. Make sure you're doing all you can to keep your pet feeling great and protect the bond you share by choosing the veterinary team at Petnarian for all your pet's healthcare needs.

Dr. Rajeev Marwaha is excited to bring his more than 30 years of veterinary experience and passion for pet medicine to the heart of Oak Brook and Stone Park, Illinois as well as Elmhurst, Oakbrook Terrace, Westmont and Downers Grove.

Before opening Petnarian Oak Brook, Dr. Marwaha acquired Animal Hospital of Stone Park, a flourishing practice that has been keeping pets healthy and clients happy since 1975.

He and the rest of the veterinary team at Petnarian look forward to welcoming you into our pet care family!

Why Is Preventive Care for My Pet So Important?

Take the most important step to protect your pet's health with our comprehensive pet wellness programs, which include regular examinations, dental care, customized vaccinations and parasite prevention. Just like with your own healthcare, identifying issues before they become serious is the key to long-term good health and keeping the lifetime cost of caring for your pet as low as possible.

What Should I Do if My Pet Becomes Ill or Needs Surgery?

Even with the best preventive care, illness and injury can happen; however, you can rest assured Dr. Marwaha and our medical team have the skill and resources to help your pet feel better as quickly as possible. Our wide range of diagnostic and surgical capabilities, supported by our advanced veterinary technology, allow us to deliver unsurpassed veterinary care with compassion and sensitivity.

Give Us a Try Today!

Choosing a veterinarian for your pet isn't an easy decision. We encourage you to read about the Petnarian veterinary services we provide and about why you should trust Dr. Marwaha and the rest of the Petnarian team to be your pet care partner, now and for years to come. For your convenience, we offer same-day appointments, drop-offs and walk-ins (appointment needed). If you have any questions or would like to schedule an appointment, please find the nearest Petnarian location to you.


We have taken our own dogs and our foster pets here for many years. The doctor is caring, knowledgeable and affordable. We trust him completely. We moved to Naperville last year and tried switching to a closer vet....but after one (expensive) and frustrating visit to a local vet, we drive back to Stone Park or Oak Brook to get the best care for our dogs.