Lenox Hill Hospital (LHH) is a nationally ranked 652[1] bed non-profit, tertiary, research and academic medical center located on the Upper East Side of Manhattan in New York City, servicing the tri-state area.

LHH serves as a clinical campus for the Zucker School of Medicine, which is owned by the health system in a partnership with Hofstra University.

[7][6] By 1887, the German Hospital and Dispensary was treating 28,000 patients annually,[citation needed] mostly from the local Little Germany neighborhood around First and Second Avenues below 14th Street.

[7] A five-story training school for nurses was added in February 1894 at 77th Street and Lexington Avenue, with four young German-American women forming the first class.

"[citation needed] A hospital annex, at the corner of 77th Street and Lexington Avenue, also donated by the Ottendorfer family, opened in 1901.

The dispensary building was sold in 1906 to the German Polyklinik, founded in 1883 – which later changed its name to Stuyvesant Polyclinic Hospital – for $82,000, and a larger dispensary was erected on the northeast corner of 76th Street and Park Avenue, with Ottendorfer's son and daughter providing the balance of the $250,000 cost, in their mother's memory.

In 1910 a separate building for intrathoracic surgery was begun on Lexington Avenue, adjoining the German Hospital Training School for Nurses, and Ottendorfer's daughter donated $100,000 for the creation of the Abraham Jacobi Division for Children.

A movement in 1925 to restore the hospital to its former name, to appeal to potential donors of German descent, was eventually rejected by the board of trustees.

In December 1931, Winston Churchill was hospitalized there for treatment of injuries suffered when he was run-over by a car after failing to look left when crossing Fifth Avenue.

Because some care was given for free or part-pay, the hospital often ran an operating deficit, just as it did in 1939, when it lost $163,029, down a loss of over $200,000 the previous year, 1938.

Due to a lack of funds, an anticipated additional new building was delayed for over 20 years, when the Second Century Development Program, designed to raise $10 million, was led by the hospital's president, James Wickersham.

On the hospital's 100th anniversary, in 1957, it opened a $4.5 million 12-story building on Park Avenue at 77th Street, with a glass and aluminum facade, and a capacity of 180 patient beds.

The new building, named the Wollman Pavilion, also housed a mental health unit, and an entire floor was allocated for research on speech and hearing disorders, epilepsy and hemophilia.

The hospital opened its largest building, at 12 stories, in 1976, located at Park Avenue and 76th Street, replacing the Ottendorfer Dispensary, at a cost of $20 million.

The modern brick masonry structure, with a fortresslike facade, stood in stark contrast in architectural style of the rest of hospital's buildings.

In 1998, a jury awarded $49 million in an obstetrics case against the hospital, which was one of the largest medical malpractice verdicts in New York City at that time.

In 2014, the old St. Vincent Hospital building that had suddenly closed back in 2010, became Lenox Hill HealthPlex, Manhattan's first freestanding emergency department.

[12] The hospital became a leading innovator in medical care, developing and implementing many standards and practices that would later become indispensable components of modern medicine.

It is also one of the first hospitals in the nation to acquire a state-of-the-art robotic cardiac system, which allows surgeons to perform minimally invasive heart-bypass surgery.

Emergency crews were sent to Ground Zero and supply runs to the area were conducted to aid the rescue workers.

[13] Lenox Hill Hospital today provides a wide range of inpatient and outpatient medical, surgical, cardiovascular, orthopedic and obstetric services.