Our Veterinarians

  • Dr. Shelly Sandel

    Shelly’s journey to becoming a veterinarian was a unique one in that it actually started with political science. After earning her BA in political science from Grinnell College, she enrolled in the University of Wisconsin’s PhD program in Soviet and Eastern European politics. However, with her love and passion for pets, she quickly realized that she needed to shift gears. Shortly thereafter, she earned her Doctor of Veterinary Medicine degree from the University of Wisconsin, where she received the Easterday, B.C. award for top veterinary students.

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  • Dr. Henry Lai

    Dr. Henry Lai is originally from San Jose, CA. He graduated with a degree in Biological Sciences from the University of California – Irvine and then went on to obtain his Doctor of Veterinary Medicine degree from Western University of Health Sciences in Pomona, CA. To obtain further training, Henry completed a rotating internship at Wheat Ridge Animal Hospital in Denver, CO which included internal medicine, surgery, emergency/critical care, radiology, cardiology, oncology, and anesthesia. Henry is also a member of American Veterinary Medical Association and the Colorado Veterinary Medical Association.

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  • Dr. Erin Casey

    Dr. Erin Casey, a Colorado native, graduated with a BS in Environmental Health from Colorado State University. She then received her Doctorate of Veterinary Medicine from Colorado State University in 2008. Additionally, Dr. Casey received a certification in veterinary acupuncture and a minor in business. After graduation she was accepted into New York City Veterinary Specialists' internship program in Manhattan, for advanced training in small animal specialty and emergency medicine. Her personal interests include skiing/snowboarding, hiking, photography, and traveling. Dr. Casey and her husband, David, have a beautiful daughter, Charley, and a playful son, Matthew. They live with their terrier mix named Tater Tot, their Italian mastiff named Deli, and their orange cat named Cheese.


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Office Hours

Northfield Veterinary Hospital


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-12:00 pm