Our Staff

Dr. Matthew L. Personius, M.D.

Dr. Personius graduated from the University of Iowa College of Medicine in 1994. He went on to complete his residency in Family Practice at the University of Utah in Salt Lake City, Utah. After residency, Dr. Personius and his family moved to Sonora, California, where he became Medical Director of the County run medical clinics.

He now works full time making house calls for Sierra Housecalls Medical Group, Inc., caring primarily for the elderly and homebound of Tuolumne County.

Dr. Personius, his wife JulieAnn, and their five children have enjoyed living in Sonora since 1997. In his spare time Dr. Personius coaches high school and club waterpolo. He also enjoys spending time working on his house and in his yard.

His goal is to assist seniors with maintaining a healthy, active, independent lifestyle through greater access to needed medical services.

Tina Johnson

Office Manager

Tina Johnson has been employed at Sierra Housecalls Medical Group since 2004. She was born in Sonora and has lived here all her life. She enjoys spending time with her family and watching her son's sporting events at Summerville High School.

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