ALEXANDRIA, Va.--(BUSINESS WIRE)--The Council of Accountable Physician Practices (CAPP), a coalition of visionary and respected medical group and health systems leaders, has added two new members to its roster. Advocate Health Care, Chicago and North Shore- LIJ, New York have joined the organization. CAPP is an affiliate of the American Medical Group Foundation. “We are pleased to welcome Advocate Health Care and North Shore-LIJ to our organization of physician leaders and integrated healthcare