Umass Memorial Health Care Inc
Group exemption number 3642 · Worcester, MA. When this group’s Form 15644 is due, and what the IRS file lists for it.
IRS EO BMF, posted Oct 13, 2026
I run the central office
You file Form 15644 for the whole group. Your deadlines are below.
$149 private report for group 3642: your chapter list as the IRS has it, the chapters to follow up, and a draft Form 15644 to check and file yourself.
I’m a chapter, club or post officer
Your central office files Form 15644 for the whole group. Your own job is your chapter’s yearly IRS return, usually the 990-N e-Postcard, unless your central office includes you in its group return.
Opens your email with this page’s link filled in. You choose who to send it to.
Deadlines for this group
First: transition cleanup, if your group needs it
90 days left
If you must remove chapters, add a first chapter, or keep one group letter and terminate the others (Rev. Proc. 2026-8 §12.02(2)), file that before this date, as an interim update if your annual window is later. See the cleanup checklist.
Then this group’s yearly Form 15644 window
–
252 days until it opens
Facts from the IRS file
- Group exemption number (GEN)
- 3642
- Central organization
- Umass Memorial Health Care IncName in IRS file: UMASS MEMORIAL HEALTH CARE INC · EIN 04-3358566
- Location in the IRS file
- Worcester, MA
- Chapters on file
- 20Local chapters listed under this group exemption in the IRS file (the IRS calls them subordinates)
- Central organization’s tax-exempt category
- 501(c)(3)The central’s own 501(c) paragraph. Its chapters can be under a different one (Rev. Proc. 2026-8 §4.03(2)(a)). Under the new rules all chapters must share one paragraph; groups whose letter existed on Jan 20, 2026 have until Jan 22, 2027 to remove the others (§12.02(2)(e)).
- Fiscal year ends
- September 30
- Form 15644 window
- Jul 2 – Aug 31, 2027From 90 to 30 days before the fiscal year ends, every year
- Cleanup deadline
- Before Jan 22, 2027If you need to remove chapters, add a first chapter, or keep one group letter and terminate the others, file that before Jan 22, 2027. If your annual window is later, file it as an interim update. See the cleanup checklist.
Source: IRS EO BMF, posted Oct 13, 2026 (the IRS roster file). Window rule: Rev. Proc. 2026-8 §7.01. Plain facts from public IRS data; not tax or legal advice. Read the Form 15644 guide or the glossary.