Official NY OCA attorney registration data · Updated 2026 Methodology Discipline records
Organization

Memorial Sloan Kettering Cancer Center

37 attorneys in the New York State Bar registry list this organization as their firm or employer.

About Memorial Sloan Kettering Cancer Center

Memorial Sloan Kettering Cancer Center, also called MSK, is a cancer treatment and research institution whose main campus sits at 1275 York Avenue in Manhattan. It took its present form in 1980, when Memorial Hospital for the Treatment of Cancer and Allied Diseases, founded in 1884, combined with the adjacent Sloan-Kettering Institute for Cancer Research, founded in 1945. The center treats adults and children with many types of cancer and offers supportive services such as genetic counseling, pain and symptom management, rehabilitation and integrative medicine. Its Gerstner Sloan Kettering Graduate School offers a Ph.D. in cancer biology, and its physicians lead clinical trials for pediatric and adult cancers.

Outside Manhattan, the institution operates outpatient and specialty sites in New York State, including Commack, Hauppauge and Uniondale on Long Island and West Harrison in Westchester County. It also has locations in New Jersey. Its official site lists a main telephone line for general information and separate numbers for appointments and patient referrals.

TypeOrganization
New York officesNew York, Commack, Hauppauge, Uniondale, West Harrison
Phone212-639-2000
Websitemskcc.org
Registered NY attorneys37

Organization profile based on its official website and public sources (reviewed October 29, 2026). Attorney list from the New York State Unified Court System registration data. Not affiliated with Memorial Sloan Kettering Cancer Center.

Registered attorneys

Nancy O'Connor Admitted 1998 · New York, NY Suspended Shanti Bajaj Admitted 1999 · New York, NY Currently registered Jason Klein Admitted 2000 · New York, NY Currently registered Karen Brown Admitted 2000 · New York, NY Currently registered Joanna Halperin Admitted 2001 · New York, NY Currently registered Leslie Ballantyne Admitted 2002 · New York, NY Currently registered Debra Berns Admitted 2003 · New York, NY Currently registered Kristen Kim Admitted 2008 · New York, NY Currently registered Colin Garry Admitted 2008 · New York, NY Currently registered Pamela Margolin Admitted 2009 · New York, NY Currently registered
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Registration status can change at any time. Confirm any attorney's current status through the official New York Attorney Search.

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