# Dr John Hefferlin & Marian Hefferlin Foundation

Dr John Hefferlin & Marian Hefferlin Foundation is a Private Foundation based in Newport Beach, United States.

## Overview

- **Organization type:** Private Foundation
- **Headquarters:** Newport Beach, United States
- **Region:** North America

## About

The IRS Exempt Organizations Business Master File snapshot retrieved on 2026-10-14 identifies Dr John Hefferlin & Marian Hefferlin Foundation as a private grantmaking foundation exempt under Section 501(c)(3). Its Employer Identification Number is 33-0550728. Its reported mailing city is Newport Beach, California, United States. For the tax period ending December 2024, the retained IRS record reports total assets of USD 4,092,138. Reported income for that tax period is USD 2,381,212. The reported NTEE classification code is X99. The IRS ruling year recorded in this snapshot is 1993. Original retained record: IRS Exempt Organizations Business Master File, eo3.csv, EIN 33-0550728. Total assets are balance-sheet assets, not assets under management. These are dated IRS records; they do not establish current finances or a present investment mandate.

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Updated: 2026-10-25T16:21:26Z

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