St. Luke's Episcopal Hospital (SLEH) is the first hospital in Houston and the second in Texas to be awarded the International Organization for Standardization's (ISO) ISO 9001:2008 Quality Management System certification. This prestigious recognition was bestowed in conjunction with hospital accreditation under the DNV Healthcare NIAHO® accreditation program, the first Medicare-approved hospital accreditation program integrating the ISO 9001:2008 Quality Management System with the Medicare Conditions of Participation for hospitals.

Healthgrades, the nation's most trusted, independent source of physician information and hospital quality ratings, again named several Memorial Hermann hospitals among the nation's best. The recognition is highlighted in American Hospital Quality Outcomes 2013: Healthgrades Report to the Nation, which evaluates the performance of 4,500 hospitals nationwide across 30 procedures and conditions.