Question 1

Is International Society for Mast Cell Activation Syndromes a tax-exempt 501(c)(3)?

Accepted Answer

Yes — International Society for Mast Cell Activation Syndromes is recognised by the IRS as a 501(c)(3) organisation (EIN 39-2169441). The IRS recognised International Society for Mast Cell Activation Syndromes as tax-exempt in December 2025.

Question 2

What is International Society for Mast Cell Activation Syndromes's EIN?

Accepted Answer

International Society for Mast Cell Activation Syndromes's Employer Identification Number (EIN) is 39-2169441. The EIN was assigned by the IRS in December 2025. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.

Question 3

What does International Society for Mast Cell Activation Syndromes do?

Accepted Answer

International Society for Mast Cell Activation Syndromes is registered with the IRS as a medical research nonprofit organisation. A detailed mission statement is not available on its most recent Form 990 filing.

Question 4

Where is International Society for Mast Cell Activation Syndromes located?

Accepted Answer

International Society for Mast Cell Activation Syndromes is located at 701 S Parker ST STE 1200, Orange, CA, 92868-4727.

Question 5

When was International Society for Mast Cell Activation Syndromes founded or recognised by the IRS?

Accepted Answer

International Society for Mast Cell Activation Syndromes was recognised by the IRS as a tax-exempt organisation in December 2025. The IRS ruling date is the earliest authoritative date available for most US nonprofits.

Question 6

What is International Society for Mast Cell Activation Syndromes's annual revenue?

Accepted Answer

Detailed Form 990 financials for International Society for Mast Cell Activation Syndromes are not currently available on this profile.

Question 7

Has International Society for Mast Cell Activation Syndromes been auto-revoked by the IRS?

Accepted Answer

No — International Society for Mast Cell Activation Syndromes (EIN 39-2169441) does not appear on the IRS Auto-Revocation List. Givalgo Discover cross-references the IRS Auto-Revocation List on every profile load; if status changes, this page reflects it.

Question 8

Is International Society for Mast Cell Activation Syndromes listed in IRS Publication 78?

Accepted Answer

Yes — International Society for Mast Cell Activation Syndromes is listed in IRS Publication 78 as an organisation eligible to receive tax-deductible charitable contributions. Pub 78 status is the canonical IRS signal that donations to an org are deductible.

Loading profile…

International Society for Mast Cell Activation Syndromes

Due Diligence Summary

AI Organization Overview

Organization Details

Contact

Financial Snapshot

Location

Frequently asked questions about International Society for Mast Cell Activation Syndromes