Contact Information

Toll Free Number
1-877-HSA-CITI (1-877-472-2484)

Hours of Operation
You can call 24/7 to access the automated voice response system. Please call between 8 a.m. and 8 p.m.
Eastern time on weekdays, excluding holidays, to speak with an agent.

Mailing Address
Citibank, HSA
P.O. Box 427
Indianapolis, IN 46206-0427

Overnight Mailing Address
Citibank, HSA
4000 Pendleton Way
Indianapolis, IN 46226-5224