Open 7 Days a Week
Open 7 Days a Week

About Our Doctors

Dr. Chris Hummel

I graduated from Purdue University School of Veterinary Medicine in 1994. I spent time practicing in Houston, Texas, and the greater bay area in northern California before moving to the greater Phoenix area in 2003. Since coming to the valley, I have worked in multiple veterinary hospitals within the Pet Vet family of hospitals as a relief veterinarian. I started working as full time veterinarian at Goodyear Animal Hospital from July 2005 to September 2007 before transferring to Westbrook Animal Hospital as an owner veterinarian in 2007. I enjoy all aspects of veterinary medicine from surgery to medicine in both dogs and cats. I am working towards board certification in general practice.

My spouse and I live in northwest Phoenix with our 3 wonderful dogs, Maggie, Adam and Austin, all of whom have their own special medical problems; our 2 cats, Kazi and Stach-a-rue, and many fresh water fish. When we are not working, I enjoy playing with the dogs, touring Arizona on my motorcycle, caring for my fledgling Plumeria collection, reading and writing.


Dr. John Schroeder

I was born and raised in Iowa where I started my career in the veterinary field working as a kennel assistant, gradually working my way up to tending to the front desk and assisting doctors with office visits.

I attended University of Northern Iowa for my undergraduate work and then graduated from Iowa State as a Doctor of Veterinary Medicine in May of 2017.

In my free time, I enjoy cycling and working on craft projects. My girlfriend Amy and I also love to travel, visiting different countries, as well as all the local craft breweries. We recently adopted Piper, a Dachshund/Terrier puppy, who loves to cuddle and explore the new state with us. I am so happy to join the AZPetVet Westbrook family!

Dr. Julia Wiederholt

Dr. Wiederholt grew up in a small town in Iowa right along the Mississippi River. She attended Western Illinois University for her undergraduate degree in Biology, and graduated from Iowa State University’s College of Veterinary Medicine in 2016. She also obtained a master in public health from the University of Iowa in 2016. She moved to the Phoenix area shortly attaining her DVM in order to escape the Midwest winters. In her free time, she enjoys reading, hiking, and tending to her large collection of houseplants and succulents. She lives with her foster failure cat Big Paw Paw and her Chihuahua Nicholas.

Dr. Martha Ullman

Dr. Ullman has always wanted to be a veterinarian. She grew up in Northwest Indiana, near Chicago. She attended Purdue University for her undergraduate and veterinary degrees. During veterinary school she came to Arizona for an externship and decided to return for an equine internship at Chaparral Veterinary Medical Center in Cave Creek. Since her internship she has worked on horses and small animals. She has practiced in Indiana, Ohio, and Arizona. On her time off she enjoys running, hiking, and spending time with her dog, Elli, and one-eyed cat, Odin.

(623) 825-9170
Open 7 Days a Week
Connect with us

Westbrook Animal Hospital

9163 W. Union Hills Dr., #108
Peoria, AZ 85382
(623) 825-9170
Open 7 Days a Week
7:30am-7pm Monday thru Friday
8am-3pm Saturday and Sunday