Maryland/DC

Contact Us

The Nature Conservancy of Maryland/DC
425 Barlow Place
Suite 100
Bethesda, MD 20814
Phone: (301) 897-8570
Fax: (301) 897-0858

Acting Maryland/DC Executive Director
Mark Bryer
(301) 897-8570

Director of Philanthropy
Heidi Onkst
(240) 630-7032
heidi.onkst@tnc.org

Philanthropy Coordinator
(for general philanthropy inquiries)
Haimanot Semaiat
(240) 630-7031
haimanot.semaiat@tnc.org 

Director of Communications and Marketing
Severn Smith
(703) 508-5944 (cell)
severn.smith@tnc.org

Senior Media Relations Manager
Matthew Kane
(240) 630-7052
(323) 898-6510 (cell)
matthew.kane@tnc.org

Eastern Shore Office
114 South Washington Street
Easton, MD 21601

Worldwide Office of The Nature Conservancy
4245 North Fairfax Drive, Suite 100
Arlington, VA 22203-1606
Phone: (703) 841-5300


Frequently Asked Questions (FAQs)


Our Accountability

Annual Reports and Financial Statements

The Conservancy's strong performance is recognized by charity watchdog organizations like the Better Business Bureau (BBB) Wise Giving Alliance and the American Institute of Philanthropy.


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