Our Departments


Administration - St. Mary's Campus
516.921.0808

Angel Guardian Campus -FBH
718.232.1500 x 353

Human Resources
516.921.0808 x 205

Preventive Services
718.375.7444 x 207

Residential Programs - Syosset
516.921.0808 x 813

Resource Development
516.921.0808 x 114

Volunteer/Mentoring
516.921.0808 x 525

Contact information

MercyFirst

Administrative Offices
525 Convent Road
Syosset, NY 11791


Telephone: 516.921.0808

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