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Dr. Stanley P. DeFehr, MD FACC
A native of Weatherford, Oklahoma, Dr. Stanley P. DeFehr has been a member of the BlueStem Cardiology team since 1980. With nearly 30 years experience, Dr. DeFehr is one of three BlueStem physicians boasting at least 15 years with the practice. (More)




Dr. Gary T. Dykstra, DO FACC
Dr. Gary T. Dykstra joined BlueStem Cardiology in 1992 with an impressive catalog of professional experience. In addition to his cardiology practice, Dr. Dykstra has also dedicated time to remaining active in the field as a member of the American College of Cardiology and the Washington County Medical Society. (More)




Dr. Anderson P. Mehrle, MD FACC
The newest member of the BlueStem Cardiology team, Dr. Anderson P. Mehrle joined the staff in 2008 after practicing at Cardiology Consultants of Bozeman on staff at Bozeman Deaconess hospital in Montana. (More)





Dr. William Patrick Tinker, MD FACC
One of the founding members of BlueStem Cardiology, along with Dr. Stanley DeFehr, Dr. William P. Tinker established the BlueStem clinic in 1980 and has since been one of its finest physicians. (More)