This is not a form you receive, but one that is included in your tax return that shows contributions and distributions for your Health Savings Account (HSA).
Form 8889: Health Savings Account (HSA) is used to report HSA contributions, distributions, and withdrawals.
We'll automatically fill out Form 8889 if you and/or your employer contributed to an HSA (usually indicated by code W in box 12 of the W-2), if you used funds in your HSA (reported on Form 1099-SA), or if you inherited an HSA.
Tip: On jointly-filed returns, Form 8889 will have a -T or -S suffix, for example Form 8889-T or 8889-S. This simply denotes who the 8889 belongs to (T for taxpayer, S for spouse).