12800 Wayzata Blvd

Minnetonka, MN 55305

Phone: (952) 545-9161

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Our Veterinary Team

Dr. Andrea Johnston, Owner and DVM

Dr. Andrea is a graduate of the University of MN College of Veterinary Medicine. Dr. Andrea also completed a rigorous one year post doctorate internship in Small Animal Medicine at the U of M. Her special interests include internal medicine, emergency medicine and dentistry. She enjoys working with clients to help them understand how preventive care can set their pet up for success and optimal life expectancy. Dr. Andrea and her husband both grew up in the Minnetonka area and are both graduates of Hopkins High School. Dr. Andrea and her husband welcomed a daughter, Avery, in April, 2013 and another daughter, Quinn, in March 2016. Her family also includes her Laborador, Sullivan. Her interests include running, reading, spending time with family and cross country skiing.

Dr. Rob Memmen, Owner and DVM

Dr. Rob spent most of his childhood in Savage, MN and graduated from Burnsville High School. He completed his undergraduate training at the University of Wisconsin Madison and graduated from the University of Minnesota College of Veterinary Medicine. Dr. Rob worked in a small animal practice in South Bend, IN following graduation and joined the GAH team as an Associate Veterinarian in 2013. His professional interests include dentistry, surgery, dermatology and internal medicine. Dr. Rob is passionate about preventive care and wellness care for pets and helping pets enjoy long, healthy lives. In his spare time, Dr. Rob enjoys playing basketball, playing guitar and volunteering with organizations such as Big Brothers and Big Sisters.

Dr. Charles Gehrman, DVM

Dr. Charles graduated from the University of MN College of Veterinary Medicine. His special interests, aside from preventive care and wellness, include gastroenterology and endoscopy. Dr. Charles inherited his passion for veterinary medicine from his father, Dr. Fred, and has enjoyed carrying on the tradition of quality, state-of-the-art veterinary care for his community. He, his wife and 2 sons have lived in the Minnetonka/Plymouth area his entire life. His personal hobbies include playing saxaphone in a local band, hanging out with his mules (really!) and enjoying his grandchildren.

Dr. Liz Aldridge, DVM

Dr. Liz graduated from the Universty of Minnesota College of Veterinary Medicine and worked in Des Moines, Iowa before joining the team at Gehrman Animal Hospital in 2016. She grew up in Sun Prairie, Wisconsin and graduated with honors from Iowa State University for her undergraduate degree. She enjoys working with clients to provide high quality veterinary care to their pets and believes regular wellness care is important for pets to live long and healthy lives. In her free time, Liz enjoys camping, hiking, and spending time at family cabins in northern Wisconsin and Ontario, Canada. Dr. Liz's family includes her husband, Aaron, Bernese Mountain Dog, Kaia, and cat, Kika.

Areas of Special Interest:
-Preventative & Wellness Care

Dr. Matt Kamrath, DVM

Dr. Matt graduated from the University of Minnesota College of Veterinary Medicine. He grew up on the east side of St. Paul, and initially graduated with a degree in Youth Ministry. He moved to San Diego, California after college, and started volunteering at a local animal hospital. It wasn?t long before he realized he wanted to go back to school to become a veterinarian. He loves helping new pets get off to a happy, healthy start, and is passionate about senior pets and making sure they are comfortable and happy too. Professional interests include oral surgery, ophthalmology, and hospice & end of life care. Outside of work, Dr. Matt enjoys mixed martial arts, traveling, and spending time with family. He and his wife have 2 sons, Leo and Harrison, and a French Bulldog named Bruce Wayne.

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