Training Sites

The Milstein Hospital

Since its opening in 1989, Milstein hospital has become the primary site of adult in-patient medical care on the Columbia campus. The hospital has about 745 beds with six ICUs and over thirty operating rooms. Medical patients are cared for on dedicated medical nursing units, including medical oncology, transplant, cardiac, and general medicine. One floor includes a 10-bed medical step-down unit for stable patients requiring close monitoring. For critically ill patients, the medical ICUs total 24 beds, and cardiac ICU offers an additional 18 beds.

Associates In Internal Medicine (AIM) Clinic

The Associates in Internal Medicine (AIM) clinic, the main ambulatory teaching site of the residency, is housed in the historic Vanderbilt Clinic described by Flexner in his 1910 report.  The AIM Clinic cares for a panel of 16,000 patients a year, serving the mostly minority and indigent community of Washington Heights.  Each AIM patient establishes continuous relationship with a single primary care provider, supported by a multi-disciplinary PCMH team spanning social workers, nutritionist, psychiatrist, community health workers, and high risk case managers.

The Allen Hospital

Originally opened in 1988, the Allen Hospital is located at the very top of Manhattan, overlooking the Harlem River and the Bronx. This 300-bed community hospital expands the clinic population of Columbia-Presbyterian, drawing from patient groups outside of Manhattan. In addition to admitting patients through its own emergency room and clinic system, the Allen also accepts transfers of patients not requiring the full services of Milstein Hospital. Surgical patients are cared for on a surgery-specific unit and in an open Medical/Surgical ICU.


Residents spend 2 to 3 months at the Allen their first year, rotating through a general medicine service, an intern-run ICU and a multidisciplinary geriatrics rotation. They return in the third year for another month on the general medicine wards and to supervise interns in the ICU.



Washington Heights Family Health Center

Part of the Ambulatory Care Network (ACN), the Washington Heights Family Health Center is located on 181st St and St Nicholas Ave, just one subway stop north of Columbia University Medical Center's main campus.  ACN clinics serve a similar population of patients seen at the AIM clinic. Typically, five residents from each post graduate year participate in ambulatory training at this site, where they establish continuous care and attend to the various medical needs of their patients throughout the duration of their residency. 

From Our Residents

Residency at Columbia has given me the opportunity to be part of a system that welcomes diversity and quickly makes you feel at home. It has certainly been a privilege to work in a setting that fosters underserved communities and mediates exposure to treat a wide array of disease in a challenging learning environment driven towards growth as well-rounded physicians while providing high quality patient care.

- Dennis De León, MD 


  University of Puerto Rico 

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