U.S. News & World Report Ranks John Muir Health’s Concord and Walnut Creek Medical Centers as Best Regional Hospitals FOR IMMEDIATE RELEASE August 04, 2026 John Muir Health has a nationally ranked specialty for the 20th consecutive year. (Walnut Creek, Calif.) - U.S. News & World Report released its annual list of America's Best Hospitals and John Muir Health’s Concord and Walnut Creek Medical Centers were