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Country Hills Animal Health is a group of dedicated large animal veterinarians who, through further education and practical field work, have acquired vast experience in all aspects of individual cow and whole herd health. We have our own laboratory on site through which we offer a wide range of advice to farmers and agricultural advisers.

Meet the Vets

Photo of Rick Arndt, Country Hills Animal Health vet

Rick Arndt, DVM

Rick grew up in Waupun, WI. He graduated from the University of Wisconsin with a degree in Animal Science and graduated in 1982 from Iowa State University School of Veterinary Medicine.

Rick is a member of several professional organizations. He has interests in reproduction and game animals, such as deer, elk, etc. He enjoys big game hunting and sports.


Photo of Tom Hintz, Country Hills Animal Health vet

Tom Hintz, DVM

Dr Tom Hintz was born and raised in the great state of Wisconsin, America’s Dairyland. He obtained a bachelor’s degree from UW-River Falls and received his veterinary degree from UW-Madison in 1990. He has a special interest in youngstock ventilation in addition to providing quality production medicine to our dairy clients. 

He is married and has two adult children. His personal interests include biking, hiking, cross-country skiing, singing in the church choir and spending time with his family.


Photo of David Krahn, Country Hills Animal Health vet

David Krahn, DVM

Dave obtained his DVM degree in 1989 from the UW-Madison School of Veterinary Medicine and his B.S. degree in 1985 from UW-Platteville. He started working at Country Hills in 1989 and became a practice owner in 1992.

Dave grew up on a dairy farm in Brillion, WI. He became involved in the workings and management of the family farm at a young age because of his dad’s poor health. He is married to Nadine, and they have two children, Grace and Joe. He and his family are active in their church, 4-H and school activities. Dave enjoys watching all professional sports, fishing, landscaping, music and outdoor activities. 

Professional interests include transition cow management and nutrition. He implemented the PEP (Postfresh Enhanced Performance) program, which involves training the herdsperson in identifying/treating/preventing subclinical ketosis/fatty liver disease. His other interests are record analysis and hoof trimming.

Dave was instrumental in starting Quality Milk Service. He gets great satisfaction from helping dairies reduce SCCs to less than 100,000 and clinicals to less than 2% per month.


Photo of Mike Munger, Country Hills Animal Health vet

Mike Munger, DVM

Mike grew up on a 140-cow dairy in Southeast Michigan. He graduated from Michigan State University in 1989. His professional interests include the following: herd health, reproduction and nutrition.

Mike enjoys hunting, fishing and billiards.


Photo of Mark Sosalla, Country Hills Animal Health vet

Mark Sosalla, DVM

Mark was born and raised on a dairy farm near Whitehall, WI. He is a 1984 graduate of the University of Minnesota School of Veterinary Medicine. Mark is a member of the Wisconsin Veterinary Medical Association, American Association of Bovine Practitioners and the National Mastitis Council. His interests include herd health, troubleshooting management, and production issues on the farm and record analysis.

Mark is married with three children. In his free time, he enjoys spending time with his family, watching Wisconsin sporting events and jogging.

Country Hills Animal Health staff

Meet the Staff


Photo of Rachel Ransom, Country Hills Animal Health

Rachel Ransom

Rachel has been working at a large animal veterinary clinic for more than 13 years. The last 11 years have been with Country Hills Animal Health. Her duties include maintaining and operating the in-house laboratory, answering the phone and scheduling.

In her free time, Rachel enjoys reading and spending time with her family, friends and her two bulldogs.


Photo of Brenda Scannell, Country Hills Animal Health

Brenda Scannell

Brenda Scannell is a CVT, who graduated from Madison Area Technical College in 1999. She has worked for Country Hills for 14 years. Brenda can be seen running lab samples, answering phones, entering invoices and maintaining schedules.

Growing up on a farm and enjoying the large animal aspect of the technician responsibilities, you may meet Brenda out in the field with the doctors occasionally.

Brenda and her husband Tom have two children. Together they operate a “funny farm” outside of Eden, WI, which consists of beef cows, steers, sheep, chickens, cats, two dogs and a horse. She enjoys being with her family or just being outdoors. She is involved with the area's 4H Club, where she is a project leader for cats, rabbits and dairy.


Photo of Tammy Stephany, Country Hills Animal Health

Tammy Stephany

Tammy has been with Country Hills Animal Health for the past 11 years. As office manager, Tammy maintains all financial records, inventory control and IT.

Tammy and her husband Scott reside in Fond du Lac with their three children and one dog. In her free time, she enjoys gardening, baking, traveling and reading.