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As a family medicine physician, Dr. Mathis specializes in providing quality care for men, women, and children of all ages.

David had bypass surgery in 1997 and thought his heart was doing well until he experienced another cardiac event out of nowhere.

David Hartzler was the epitome of health. A former collegiate swimmer, he had continued the sport into adulthood. Three times a week, the Lawrence, Kan., resident swam 3,000 meters with the Lawrence Masters Swim Club.