Phone: (618) 664-0640 - Fax: (618) 664-0692

Our Doctors

Dr. Jennifer Ostrom graduated from the University of Illinois College of Veterinary Medicine in 2003 and has been a proud member of the Greenville Veterinary Clinic team since 1998.

In 2012, Dr. Ostrom and Dr. Hemker purchased the Greenville Veterinary Clinic from Drs. Bristow and Gehrig. Her interests include beef and dairy herd health, bovine reproductive ultrasound, and equine and companion animal dentistry.

She enjoys spending her free time with her husband, children, two cats and doing any type of outdoor activities. Away from work, she is a photography enthusiast, and a cooking and quilting student.

Dr. Lynette Hemker graduated from the University of Illinois College of Veterinary Medicine in 2006.

After graduation, she began working at the Greenville Veterinary Clinic. In 2012, Dr. Hemker and Dr. Ostrom purchased the Greenville Veterinary Clinic from Drs. Bristow and Gehrig.

She enjoys equine dentistry, dermatology, and surgery. Along with her husband and children, they care for two dogs, five horses, chickens and one cat. In her spare time, she enjoys spending time with her family participating in outdoor activities.

Dr. Harold Bristow graduated from Illinois in 1968 and served as an army veterinarian for 3 years before going into private practice. He worked one year in Altamont before working with Dr. Stowe. In 1973, Dr. Gehrig and Dr. Bristow founded the Greenville Veterinary Clinic.

Dr. Bristow’s interests include equine reproduction and dairy herd health. Dr. Bristow now works part time and is able to spend more free time at the farm in Girard and fishing. His other interests include collecting Hopalong Cassidy memorabilia, Indian artifacts, and researching genealogy.

Dr. Jade Beckmann graduated from the University of Missouri College of Veterinary Medicine in 2020. After graduation, she began working at the Greenville Veterinary Clinic.

She may have a familiar face because she spent some time shadowing and working as a veterinary assistant with GVC over the past 4 years. She is interested in large and companion animal surgery and reproduction.

Jade and her fiancé currently care for two cats. In her spare time, she enjoys swimming, country line dancing, and spending time with her family, friends, and cats.  

Dr. Lauren Hamm grew up in O’Fallon, IL and graduated from the University of Missouri College of
Veterinary Medicine in 2019.
After graduation, she spent a year doing an equine medicine and surgery
internship at Oakridge Equine Hospital in Edmond, OK.
She enjoys equine dentistry and lameness examinations. She is also interested in companion animal surgery.

Greenville Veterinary Clinic



1720 E. City Route 40 Greenville, IL

Phone: (618) 664-0640 - Fax: (618) 664-0692

Office Hours
Monday– Friday 8:00 am-5:30pm
Saturday  8:00 am-1:00 pm
Closed Sunday

24 hour Emergency Services

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