Good Samaritan Hospital also provides social, psychiatric and substance abuse services and its certified home care agency supports residents of the Hudson Valley and beyond.

In 1902, Good Samaritan Hospital opened with seven beds, three doctors, seven nurses and four Sisters of Charity, more than enough to serve Suffern, New York's population of 1,800 and small business district consisting of: four hotels, three churches, one school, a lumberyard, an opera house, and an assortment of small stores.

[2] A private citizen, said to be Ida Barry Ryan, donated a building at Orange Avenue and East Park Place and $25,000 to the Sisters of Charity of St. Elizabeth to create a hospital.

[2] When the Tappan Zee Bridge opened in 1955, it brought a large number of new residents to the region and in 1959, Good Samaritan Hospital responded to the need for medical care with the Cardinal Spellman Pavilion, named for Francis Spellman, the sixth Archbishop of New York.

[2] In the late 1980s and early 1990s, the hospital added a 28-bed chemical and alcohol dependency outpatient program, a children's diagnostic center, single-room maternity units and a neonatal intermediate care nursery (NICU-level), and brachytherapy in radiation oncology services.

In fall 1996, the hospital unveiled the Union State Bank Family Birthing Center[3] and added a full-time maternity consultant.

[6] In 2007, the hospital performed its first open heart surgery, which marked the opening of The Active International Cardiovascular Institute at Good Samaritan, the only comprehensive cardiac surgery program in New York state west of the Hudson River between the New Jersey border in the south and Albany in the north, which spans over 100 miles (160 km).