[3][4][5] It purchased its neighbor Manhattan General Hospital in 1964 and was renamed Beth Israel Medical Center on March 10, 1965.

[7] It acquired Doctors Hospital on the Upper East Side in the 1990s, renaming it Beth Israel Medical Center-Singer Division, and Kings Highway Hospital Center in Brooklyn in 1995, renaming it Beth Israel Medical Center-Kings Highway Division.

Mount Sinai Beth Israel cited at the time that operations were at 20% capacity and losses of $1 billion in the last decade as reasons for the closure.

[20] In August 2024, Moody’s Investor Service downgraded Mount Sinai Hospital and Icahn School of Medicine to its lowest investment grade, Baa3.

Moody’s cited $1.8 billion in debt by the end of 2023, delays in closing the branch, and cash flow damages due to a cyber-attack in February 2024 at Mount Sinai’s payment system, Change Healthcare.