Question 1

Is Mammoth Orthopedic Institute Research Foundation Inc a tax-exempt 501(c)(3)?

Accepted Answer

Yes — Mammoth Orthopedic Institute Research Foundation Inc is recognised by the IRS as a 501(c)(3) organisation (EIN 33-3429689). The IRS recognised Mammoth Orthopedic Institute Research Foundation Inc as tax-exempt in May 2025.

Question 2

What is Mammoth Orthopedic Institute Research Foundation Inc's EIN?

Accepted Answer

Mammoth Orthopedic Institute Research Foundation Inc's Employer Identification Number (EIN) is 33-3429689. The EIN was assigned by the IRS in May 2025. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.

Question 3

What does Mammoth Orthopedic Institute Research Foundation Inc do?

Accepted Answer

Mammoth Orthopedic Institute Research Foundation Inc 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 Mammoth Orthopedic Institute Research Foundation Inc located?

Accepted Answer

Mammoth Orthopedic Institute Research Foundation Inc is located at 53 Sherwin Street, Mammoth Lakes, CA, 93546-0000.

Question 5

When was Mammoth Orthopedic Institute Research Foundation Inc founded or recognised by the IRS?

Accepted Answer

Mammoth Orthopedic Institute Research Foundation Inc was recognised by the IRS as a tax-exempt organisation in May 2025. The IRS ruling date is the earliest authoritative date available for most US nonprofits.

Question 6

What is Mammoth Orthopedic Institute Research Foundation Inc's annual revenue?

Accepted Answer

Detailed Form 990 financials for Mammoth Orthopedic Institute Research Foundation Inc are not currently available on this profile.

Question 7

Has Mammoth Orthopedic Institute Research Foundation Inc been auto-revoked by the IRS?

Accepted Answer

No — Mammoth Orthopedic Institute Research Foundation Inc (EIN 33-3429689) 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 Mammoth Orthopedic Institute Research Foundation Inc listed in IRS Publication 78?

Accepted Answer

Yes — Mammoth Orthopedic Institute Research Foundation Inc 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.

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Mammoth Orthopedic Institute Research Foundation Inc

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