The Sigma office will be closed 24 December 2025 - 2 January 2026.
Phone:
888.634.7575 (US/Canada toll-free)
+1.317.634.8171 (International)
Email:
memserv@sigmanursing.org
Address:
550 W. North St.
Indianapolis, IN 46202
USA
Summer Hours of Operation
Monday-Thursday: 8:00 a.m.-5:00 p.m. ET
Friday: 8:00 a.m.- 12:00 pm ET
Join Sigma todayAccess Sigma benefitsRenew your membership
About SigmaPrivacy PolicyTerms of Use