AONL Board of Directors
2025 Board of Directors
President
Deborah Zimmermann, DNP, RN, NEA-BC, FAAN
Chief Executive Officer
DAISY Foundation
Richmond, Va.
President-Elect
Ena M. Williams, PhD, RN, CENP, FAAN
Chief Nurse Executive
Yale New Haven Hospital
New Haven, Conn.
Secretary
Claire M. Zangerle, DNP, MBA, RN, FAAN
Chief Executive Officer
AONL
Chief Nurse Executive, SVP, AHA
American Hospital Association
Chicago
Treasurer
Jacqueline Herd, DNP, RN, NEA-BC, FAONL
Chief Nursing Officer
Providence St. Josephs Health
Renton, Wash.
Region 1
Diane Regan, MSN, RN, NEA-BC, CENP
Associate Chief Nursing Officer
Tufts Medicine, Lowell General Hospital
Lowell, Mass.
Region 2
Helene M. Burns, DNP, RN, NEA-BC, FAONL
Chief Nurse & Operations Executive
AtlantiCare
Atlantic City, N.J.
Region 3
Tina Mammone, PhD, RN, NEA-BC, FACHE
Chief Nurse Executive
Region 4
Tera L. Gross, DNP, RN, NEA-BC, CENP
Chief Nursing Officer
Mayo Clinic
Jacksonville, Fla.
Region 5
Rachel Culpepper, DNP, RN, CENP
Director, Clinical Operations
IU Health West Hospital
Avon, Ind.
Region 6
Joel Moore, DNP, RN
Chief Nursing Officer
MercyOne Genesis, Davenport
Davenport, Iowa
Region 7
Christi Nguyen, DNP, RN, NEA-BC, FAAN
Associate Chief Nursing Officer of Nurse Excellence
University of Texas Southwestern Medical Center
Dallas
Region 8
Anthony Watkins, MSN, RN, NE-BC
Clinical Manager
Children's Hospital Colorado
Aurora, Colo.
Region 9
Sylvain "Syl" Trepanier, DNP, RN, CENP, FAONL
SVP, System Chief Nursing Officer
Providence
Renton, Wash.
Appointed Board Member
Crystal Bennett Schiano, DNP, RN, MBA, MSN
Service Line Manager
Children's Hospital, Neurology
Denver
Appointed Board Member
Nickolaus "Nick" Escobedo, DNP, RN, OCN, NE-BC
Associate Chief Nursing Officer
Houston Methodist Hospital - Cypress
Houston
Appointed Board Member
Karen Drenkard, PhD, RN, NEA-BC, FAAN
President
Drenkard Healthcare Consulting
Fairfax, Va.
Appointed Board Member
Nicole Gruebling, DNP, RN, NEA-BC, FAONL
Vice President Member Networks
Vizient Inc.
Irving, Texas
Appointed Board Member
Marie Prothero, PhD, RN, FACHE
Assistant Professor, Undergraduate Program Coordinator
Brigham Young University, College of Nursing
Provo, Utah
At-Large Board Member
Rosanne Raso, DNP, RN, NEA-BC, FAONL
Editor-in-Chief, Nursing Management & Adjunct Professor
Wolters Kluwer & Case Western University
Staten Island, N.Y.