Directory of Charities

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Oasis Institute			code: 78446
phone: 314-862-2933	categories	EIN: 431830354	admin fee: 22.4%
The US aging population is growing dramatically. OASIS promotes successful aging by engaging 367,000 older adults in educational, health and volunteer programs in 27 cities.
Obsessive Compulsive Foundation, Inc.			code: 10554
phone: 617-973-5801	categories	EIN: 222894564	admin fee: 32.4%
Educating and assisting public and professional communities about OCD and related disorders. Providing critical support and resources and connecting professionals who treat the disorder.
Ocean Conservancy			code: 11436
phone: 800-519-1541	categories	EIN: 237245152	admin fee: 25.9%
Through research, education and science-based advocacy, Ocean Conservancy informs, inspires and empowers people to speak and act on behalf of the oceans.
Ocean Foundation			code: 12418
phone: 401-709-4071	categories	EIN: 710863908	admin fee: 11.5%
Educating and inspiring people to value the interconnectedness of life and how each person can help conserve our ocean planet for the future.
Ocean's Harbor House, Inc. dba Ocean's Harbor House			code: 35957
phone: (732) 929-9096	categories	EIN: 222672209	admin fee: 19.5%
Youth shelter and outreach programs providing emerency housing, prevention, outreach and crisis intervention services for runaway, homeless and abused youth and their families.
Oceana, Inc.			code: 10051
phone: 202-833-3900	categories	EIN: 510401308	admin fee: 10.7%
Works internationally to protect marine wildlife and human health through programs to end pollution and destructive fishing practices, and to ensure vibrant, healthy oceans.
Officers' Christian Fellowship			code: 10531
phone: 800-424-1984	categories	EIN: 381415401	admin fee: 14%
Supports military leaders who serve their country. Provides retreats, fellowship, counseling, and other resources to help members and their families grow together and serve others.
Okinawa Christian School Mission dba Okinawa Christian School			code: 11068
phone: 800-446-6423	categories	EIN: 237057861	admin fee: 16.6%
Donations help needy families from Okinawa's international community receive financial assistance to help pay for a fully accredited, affordable, biblically integrated American-style K-12 education.
Oklahoma City National Memorial Foundation			code: 11611
phone: 888-542-4673	categories	EIN: 731472725	admin fee: 34.3%
The Memorial is a place of education and remembrance, honoring those affected by the bombing, teaching about the impact of violence and offering hope.
Older Women's League			code: 11321
phone: 800-825-3695	categories	EIN: 942686349	admin fee: 6.3%
OWL is the only national grassroots membership organization to focus on issues important to midlife and older women. We advocate for equality and health care!
Olive Branch International			code: 10011
phone: 757-518-8749	categories	EIN: 841247760	admin fee: 12.7%
Providing humanitarian service in the international military community - warriors and their families - with counseling, education and training, including moral, mental and material support.
Omaha Theater Company			code: 11604
phone: 402-345-4849	categories	EIN: 470494912	admin fee: 27.3%
One of the country's leading children's theaters, we reach over 350,000 each year with critically-acclaimed drama and dance productions, educational programs and national tours.
Omni Med			code: 10999
phone: 617-332-9614	categories	EIN: 043409072	admin fee: 10.6%
Supports medical teaching and service programs in underserved areas in Belize and Guyana. Committed to reducing global disparities in health care by encouraging health volunteerism.
Oncology Nursing Society Foundation dba Oncology Nursing Foundation			code: 10555
phone: 412-859-6100	categories	EIN: 251410081	admin fee: 11.3%
The ONS Foundation is improving cancer care and the lives of people with cancer by funding oncology nursing research, scholarships, awards, and educational programs.
Open Door Adoption Agency			code: 10392
phone: 800-868-6339	categories	EIN: 581703392	admin fee: 11.7%
Adoption is a loving choice. We provide stable families to children born domestically and internationally, while offering humanitarian aid to orphans in economically distressed situations.
Open Doors with Brother Andrew, Inc.			code: 10946
phone: 949-752-6600	categories	EIN: 237275342	admin fee: 16.6%
Many Christians worldwide suffer assault, imprisonment, torture, murder and persecution for their faith. Help provide hope through Bibles, training, advocacy, relief and community-based initiatives.
Open Space Institute Inc dba Open Space Institute Inc			code: 92115
phone: (212) 290-8200	categories	EIN: 521053406	admin fee: 7.6%
The open space institute protects scenic natural and historic landscapes to ensure public enjoyment conserve habitats and sustain community character through land acquisition efforts.
Operation Blessing International Relief and Development Corp.			code: 10530
phone: 800-730-2537	categories	EIN: 541382657	admin fee: 1.1%
Dedicated to alleviating human need and suffering throughout the world through disaster relief, medical aid, hunger relief and community development programs since 1978.
Operation Compassion			code: 12403
phone: 423-728-3932	categories	EIN: 621697490	admin fee: 0.1%
Help us distribute life sustaining food and supplies to hungry, starving children; single parents struggling to survive; widows living in poverty; homelessness created by disasters.
Operation Help the Children dba Operation Help the Children			code: 65816
phone: (610) 869-4330	categories	EIN: 232988107	admin fee: 29.3%
Providing impoverished and neglected youth with support services food clothing shelter referrals and basic needs to help alleviate factors contributing to juvenile crime.
Operation Homefront			code: 12526
phone: 800-825-0813	categories	EIN: 320033325	admin fee: 8.3%
Operation Homefront relies on caring patriots to support its mission of providing emergency aid and morale programs for military families and wounded warriors.
Operation Smile			code: 12033
phone: 888-OP-SMILE	categories	EIN: 541460147	admin fee: 21.2%
Transform a life, one smile at a time! Medical volunteers provide free reconstructive surgery and follow-up care to children with facial deformities across the globe.
Operation Troop Aid			code: 26493
phone: 901-355-8844	categories	EIN: 134288094	admin fee: 3.8%
Premier care package provider to deployed U.S. Soldiers, we make a difference and inspire U.S. service members by letting them know America stands with them.
Operation USA			code: 10393
phone: 800-678-7255	categories	EIN: 953504080	admin fee: 1.7%
Helps communities alleviate the effects of disasters, disease and endemic poverty throughout the world by providing privately-funded relief, reconstruction and development aid.
Opportunity International			code: 10725
phone: 800-7WE-WILL	categories	EIN: 540907624	admin fee: 8.1%
We collaborate with local partners worldwide to provide microfinance services allowing poor entrepreneurs to develop steady income, provide for families and create jobs for neighbors.

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