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Dr. Greg K. Winterowd, DVM

Iowa State University

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Dr. Greg Winterowd is a native of Linn County and a second generation veterinarian. After graduating from Springville High School, Dr. Winterowd received his BS in biology and chemistry from Cornell College in Mount Vernon. He received his DVM from Iowa State University in 1994. Dr. Winterowd worked with his father, Darrell, in Cedar Rapids from 1994-2000, and then came to Linn Animal Hospital via their sister clinic, Park Towne Animal Hospital, where he is now a partner. Dr. Winterowd is a member of the AVMA, IVMA, and past president of the LCVMA.

Dr. Winterowd has always been focused on small animal medicine and enjoys orthopedic and soft tissue surgery. Recently, he has been studying the benefits of herbal remedies as an adjunct treatment to traditional medicine. Dr. Winterowd sits on the Linn County Animal Control Task Force and works with the Cedar Rapids Animal Control and their neuter program.

Dr. Winterowd, his wife, and two daughters live ona small hobby farm with a dozen black angus cattle, a handful of barn cats, and an old llama named Brownie. Dr. Winterowd is rarely seen at work without one of his dogs close by. He enjoys racquetball, construction and driving his old dump truck in his spare time.


Dr. Jill L. Johnson DVM

Texas A&M

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Dr. Jill Johnson received her DVM in 1994 from Texas A&M University and joined a large animal practice in Houston. She moved back to Iowa in 2002 and joined Linn Animal Hospital and their sister clinic, Park Towne Animal Hospital, in 2004.

Dr. Johnson's special interests are internal medicine and soft tissue surgery. A certified veterinary chiropractitioner, she uses spinal adjustment as a complimentary modality in the treatment of neck and back problems. She is a member of the AVMA, IVMA and LCVMA.

Dr. Johnson graduated from Cedar Rapids Prairie High School in 1980. She and her husband, Michael, live in Cedar Rapids and share their home with their dogs, Jack and Madison.. She enjoys outdoor activities, especially running, biking and fishing.


Dr. Mark A. Klopfenstein, DVM

Iowa State University

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After receiving his DVM in 1986, Dr. Mark Klopfenstein came to Linn Animal Hospital to practice with his dad, Dr. Vic Klopfenstein, and Dr. Larry Wogahn.

Dr. Klopfenstein (or Dr. Mark, as he's more commonly referred to) has interests in preventative medicine, internal medicine and orthopedic surgery. He has been an active member of the AVMA, IVMA, EIVMA, and LCVMA. He has served many roles for these veterinary associations and is currently on the Legislative Committee of the IVMA.

Dr. Klopfenstein's wife, Cheryl, is an active fitness instructor and director of their three college children. He enjoys spending time with his family, fishing, hunting, golfing and traveling. The family has a yellow lab, Riley.

Dr. Klopfenstein is a Marion graduate. He has been very active in the community by serving on many boards at Linn-Mar Community Schools, Marion Chamber of Commerce, YMCA, Marion Friends of the Library, and the First United Methodist Church. He believes in giving back to the community that has given so much to his family and business.


Dr. Erin L. Garman, DVM

Iowa State University

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Dr. Erin Garman received her DVM in 1992 from Iowa State University and came to Linn Animal Hospital in 1998 after practicing in Des Moines for four years and in Madison for two years. She became a partner in Linn Animal Hospital in 1999 when Dr. Vic Klopfenstein retired.

Dr. Garman has a special interest in ultrasound and has been performing cardiac and abdominal ultrasound since 2000. She also enjoys internal medicine and soft tissue surgery, along with her ferret patients and their unique challenges. She is a member of the AVMA, IVMA and LCVMA, in addition to being a member of the Ethics Committee for the IVMA.

Dr. Garman is a 1985 graduate from Cedar Rapids Kennedy high school. Her family life is spent on an acreage with her husband, Bob, and their three children. Jazz, a standard poodle, and their cat, Sun, round out the family. She enjoys the beach and water sports, and entertaining with her family and friends.

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