Our team of veterinary professionals is dedicated to delivering the best customer service and compassionate care to you and your pets.

Hospital Manager Nancy HarasNancy, our Hospital Manager, has been a part of the Green Bay Animal Hospital family since 1980. She worked as a medical, dental and surgical technician for six years. 

She resides in the Northwest suburbs with her husband, their Italian Greyhound, Gianna, and two cats named Rocky and Smithy. When she's not working, Nancy enjoys spending time with her family and ministering to the homebound.


ccs barbara haljun 200pxBorn in the Midwest, raised in California, Barbara returned to her roots after graduating from the University of Colorado and marrying her childhood sweetheart, Bill. (Bill is the gentleman with the patchwork pants who brings her a latte to work every morning.) They raised all of their children in Kenilworth and were Green Bay Animal Hospital clients, too. For 20 years Barbara worked as an independent contractor for the University of the South School of Theology, training participants as mentors and facilitators. She joined our team in 2004.

Today, Barbara and Bill live in Winnetka with their dogs, Wally and O. Henry. When not working, Barbara enjoys gardening, designing and leading inter-generational discussion groups, as well as spending time with her seven grandchildren.

Veterinary Receptionist Diane with DogDiane joined the front desk staff at Green Bay Animal Hospital in 1999. Residents of Kenilworth, Diane’s family has been clients at Green Bay since the hospital opened in 1972. Diane met her husband, Steve, at the University of Kansas and they lived in Connecticut, Wisconsin and Indiana before settling in Wilmette.

Diane and Steve have three grown children, two dogs (Kadie and Betsy), and two cats (Homer and Mimi).


Veterinary Receptionist GinaGina has been at Green Bay Animal Hospital since 1989. She has worked for a very long time as a veterinary technician, however now almost exclusively works at the front desk. Along with being a seasoned member of the Green Bay Team, she also has a full house at home with four children and lots of pets.

Her dogs, both Doberman Pinchers, Harley and Ella, get along well with the cats, Tebow, Boo, and Miya.


photo unavailable 200pxMegan is a client care specialist at Green Bay Animal Hospital.




Vet Tech Rebecca Jacobi, CVT with DogRebecca started working at Green Bay Animal Hospital in October 2014 with an externship from Fox College. In April 2014, she took and passed her national board exam and officially became a certified veterinary technician (CVT). She was such a wonderful addition to the Green Bay Team that, in January 2015, she became an offical employee!

Rebecca has a special interest in canine behavior and she loves, loves, and loves all Boxers. She lives in Chicago with her husband, daughter, and their dogs – Monty and Sumya (Boxers) and Patton (Jack Russell Terrier).

Veterinary Technician Maggie with DogMaggie grew up in Wilmette, Illinois and attended the College of Wooster, majoring in Biology. She joined the Green Bay Animal Hospital staff in 1993.

Her duties include assisting in surgery, lab work and chemotherapy treatments.



Vet Tech Ariel FerriAriel came to work for Green Bay Animal Hospital in July 2014. She graduated from the University of Minnesota in May of 2014 with a Bachelor's degree in Animal Science with a pre-veterinary emphasis. Her ultimate goal is veterinary school and to become a cardiologist.

Outside of work, Ariel enjoys yoga, swimming, singing, and just hanging out with family and friends. She currently lives with her parents in Deerfield where they have two dogs (Shai, a Labrador Retriever, and Samson, a Treeing Walker Coonhound) and three cats (Simba, Pickles, and Zorro).

Veterinary Technician BillyBilly studied Veterinary Technology at Fox College and graduated in 2014. He came to Green Bay Animal Hospital in November of 2015 after working in Vernon Hills for a year. He lives in Gurnee with his husband (newlyweds!) and their menagerie of pets, including: two dogs, Dunder and Gambit; four cats, Armani, Huey, Downey, and Miffy; and a turtle named Shelby.

In his free time, Billy enjoys dancing, snowboarding, and watching anything on television, but especially reality TV.


Vet Tech Erika Lopez with DogErika is a veterinary technician at Green Bay Animal Hospital.




Vet Tech Maddy PreusserMaddy is a veterinary technician at Green Bay Animal Hospital.




Technician Assistant Daria LahnDaria joined Green Bay Animal Hospital in 2008 as a technician assistant. Prior to joining the practice, she worked as an activity director in a residential nursing facility and as a pet groomer on the north shore. Daria received a BA degree in Psychology from De Paul University in 2003.

She resides in Evanston, Illinois with her husband and their two daughters.


vt kirsten beitzel 200pxKirsten is a Veterinary Assistant at Green Bay Animal Hospital.