About Us

Chapter Region
Sigma's chapters are separated into six global regions. The North America region is further divided into 15 geographic regions. To learn more about the organization's regions, visit the Sigma website.

Headquarters Information
Chapter-specific questions should be directed to the chapter's contact person listed in the chapter directory. If you have questions about your membership, renewals or benefits, please contact Sigma headquarters. 

550 W. North Street
Indianapolis, IN 46202 USA

888.634.7575 (US/Canada toll-free)
+1.317.634.8171 (International)

Call center staff are available to assist you Monday-Friday, 8:00 a.m. - 5:00 p.m. Eastern Time.

The Omega Epsilon at-Large Chapter of Sigma was formerly known as the SIA Honor Society of Nursing and Midwifery. It is the 1st Sigma chapter in Ireland that has been born out of collaborative efforts between Higher Education Institutions and Planning and Development Units of Nursing and Midwifery in the Southern regions of Ireland. It was officially recognized as a Sigma chapter in November 2018 joining the other X Sigma chapters across the globe. The goals of the chapter are fourfold: to recognize and celebrate clinical and academic achievements of nurses and midwives; to engage more nurses and midwives in scholarship and translational research; to establish links between nurses and midwives working in practice and in academia; to give Irish nurses and midwives a voice in the global community of nurses.