Ms. Kiefer joined University Hospitals as president of UH Rainbow Babies & Children’s Hospital and UH MacDonald Women’s Hospital in June 2025, where she serves as a key system leader and holds the Patti DePompei Distinguished Chair in Women’s and Children’s Healthcare Leadership. Working in close partnership with the chairs of pediatrics and obstetrics/gynecology, she oversees all clinical programs and services across both hospitals while shaping and executing their strategic vision. Over her first 10 months, she led the development of a refreshed strategic direction for Rainbow and established a standalone system of care for women’s health that extends beyond the pregnancy journey to comprehensive medical and surgical services. Under her leadership, the hospitals achieved successful DNV survey outcomes and secured Magnet reaccreditation for nursing excellence for the fifth consecutive time, an accomplishment achieved by fewer than 2% of U.S. hospitals. UH Rainbow Babies & Children’s Hospital earned recognition as a U.S. News & World Report “Best Hospital” for 2025-2026, ranking in all 11 pediatric specialties. Ms. Kiefer previously served as senior vice president and CEO of Children’s Memorial Hermann Hospital in Houston and as vice president of strategy at Indianapolis-based Riley Children’s Health. She currently serves on the Children’s Hospital Association public policy committee of the board, and chairs the Carol Emmott Network governing council.
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Becker's Recognition
Marissa G. Kieferhas been named a Becker's honoree on the lists below.
2026 Winner

Executives
236 Women Hospital and Health System Presidents and CEOs to Know
CEO
