Catherine (Cathy) Williams, VMD


  • University of Pennsylvania School of Veterinary Medicine class of 1979, Magna Cum Laude
  • Auburn University internship in small animal medicine and surgery 1979 – 1980
  • Practice experience: Marleton NJ, Liverpool, England, Gainesville FL, Manhattan KS, Purdue University IN, College Station TX, Houston TX, Champaign and Mahomet IL

Professional background: I have, of course, always loved animals and was fortunate enough to be able to combine this love with my other passion for science by becoming a Veterinarian. I have worked in many different practices over the years and I believe this has given me a unique perspective. Every Veterinarian has their own way of doing things….indeed a treatment considered wrong in one practice might be used successfully in another! This has enabled me to become more open minded and flexible in my approach. I am committed to providing the highest quality most up to date medical and surgical treatments, but over thirty years of practice have taught me that simple treatments and tincture of time can cure many ills without the need for expensive testing.

Family: I have been married to David Williams, (professor of Veterinary Medicine at the University of Illinois) for 33 years. David is currently researching weight loss in geriatric cats. We have one son, Harold who received his PhD in Mathematics from the University of California at Berkeley and is now dividing his time between two jobs, one with a start-up company developing software for driver less cars and the other as a post doc in Mathematics at UC Berkeley. He was married this past fall to a lovely women with whom he has been in a relationship with for several years. We are thrilled to welcome her to our family. We have 3 cats several of whom vomit on a regular basis and one elderly dog recently adopted from Hospice Hearts, a rescue group that finds homes for pets whose owners have either passed away or gone into nursing homes.

Other interests: I have always been interested in art and enjoy drawing with pastels. Several of my pet portraits are on display in our hospital. I also enjoy horseback riding and of course being with my family.


I graduated from Parkland in 2008 with an associate’s degree in pre-professional medical science. I then went on to get a bachelor’s degree at the University of Illinois in animal science in 2011. I have worked at various veterinary clinics in the area ever since. I own 2 dogs, 4 cats, and 2 horses. I also have a son who I adore!! I enjoy hiking with my son, dogs and husband, scrapbooking, rescuing animals, and working on our 5 acre farm.


I became a Certified Nursing Assistant in 2005 and received my phlebotomy certificate in 2007. From 2005 until 2018, I worked in the human healthcare field until coming to Mahomet Animal Hospital in 2018. I enjoy spending time with my 2 kids and rooting for them at their sporting events. I have 2 dogs and 1 cat!


I have been working with animals since 2015 after graduating from Southern Illinois University with a bachelor’s in zoology. I always have a house full of pets, currently I have 2 dogs and 3 cats. My favorite thing to do is go hiking or swimming with my husband, son, and dogs!