Cottonwood Veterinary Center logo


Serving the Grand Rapids Area

The purpose of Cottonwood Veterinary Center, P.C. is to protect the

health of companion animals and nurture the human-animal bond.

Technical Staff Robert Childress, DVM Clare Cinzori D.V.M Tim Whalen D.V.M. Staff

Our staff will help you feel comfortable

Our welcoming committee is our warm and friendly front desk staff. Our staff members are very approachable and knowledgeable and are invaluable to our practice. We are pet lovers just like you! Our staff includes 3 fully licensed veterinarians, ready to provide expert care to pets and their owners.

Dr. Whalen is a transplant to Michigan, born and raised in and around Toledo, Ohio. He attended Olivet College and graduated in 1984 with a double major in Biology and Biochemistry. He received his Doctor of Veterinary Medicine degree from Michigan State University in 1988.


After two years of practice in South Bend, Indiana, Dr. Whalen arrived in Grand Rapids in 1990. Married to Lisa Whalen since 1987, together they founded the Cottonwood Veterinary Center in 1999. They have a daughter, Adair, who is on the staff of the Purple Rose Theatre Company in Chelsea, Michigan. Dr. Whalen's favorite interest is the medical care of exotic pets as well as orthopedic surgery. His non-medical activities include backpacking, fishing, and birding.

Tim Whalen D.V.M.

Dr. Clare Cinzori received her BS in Animal Science from Michigan State University in 1991 and graduated with honors from MSU’s College of Veterinary Medicine in 1995. She first worked with Dr. Whalen in Wyoming, Michigan and joined the staff of Cottonwood Veterinary Center in 2001.


Dr. Cinzori is married to Aaron, a Hope College mathematics professor, and has two children, Isaac and Gwendolyn. They share their home with Miley, an exuberant lab-mix; and Izzy and Henry, their cats. Dr. Cinzori also owns a horse, a thoroughbred mare named Lily. Dr. Cinzori has strong interests in dentistry, internal medicine, general medicine and greyhounds and their special veterinary needs. In her free time, she likes to scrapbook, read, do Pilates, and spend time with her horse.

Clare Cinzori D.V.M

Call our caring staff for an appointment


"Brody, my soon-to-be

7-year-old Shih Tzu has been going to Cottonwood since a puppy. The staff is always super helpful and friendly while the

vets are so kind and intelligent."

- Lauren S. on Facebook

Dr. Childress received his BA from Indiana University in 1989. He taught middle and high school for nine years before returning to school to pursue veterinary medicine.


Dr. Childress received his Doctor of Veterinary Medicine degree from Michigan State University in 2008. He is married to Kim and together they have four children - Paul, Adam, Leah, and Laurel. They also have two dogs named Jasmine and Ella. His professional interests include orthopedic medicine and in his free time he enjoys jogging, reading, and spending time with his family.

Robert Childress, DVM

Our technical staff is considered the doctor’s right hand. With over 60 years of veterinary experience between them, they perform many important procedures involved in the treatment of your pet. Whether it's taking X-rays, drawing blood, monitoring anesthesia or helping out during your pet’s exam, you can bet our technical staff will have a big part in your pet’s medical experience.

Technical Staff


Our dedicated and friendly reception staff is here to serve you whether it's on the phone or in person for your visit. Please don't hesitate to call on them with any questions or concerns regarding your appointments or billing.

Reception Staff