Staff Columbia University Medical Center Attending Physicians Name Phone Fax Email Howard L. Kaufman, MD Division Chief 212.342.6042 212.342.0234 hlk2023@columbia.edu Bret Taback, MD Surgical Oncology 212.342.6042 212.342.0234 Colorectal Surgery Section Richard L. Whelan, MD Chief, Colorectal Surgery Section 212.305.6136 212.305.1981 Daniel L. Feingold, MD Colorectal Surgery 212.342.1155 212.305.8679 Breast Surgery Section Mahmoud El-Tamer, MD Acting Chief, Breast Surgery Section 212.305.0728 212.305.0727 Kathie-Ann P. Joseph, MD Breast Surgery 212.305.0724 212.305.1522 Laura A. Klein, MD Breast Surgery 212.305.0456 212.305.1522 Helen A. Pass, MD Breast Surgery 914.787.4000 914.787.4320 Research Gail DeRaffele, RN Clinical Research Coordinator 212.342.0232 212.342.0234 gd2023@columbia.edu Dae Won Kim, PhD Post Doctoral Research Scientist 212.342.0237 212.342.0234 dwk2104@columbia.edu Hong Sung Kim, PhD Post Doctoral Fellow 212.342.0237 212.342.0234 hsk2113@columbia.edu Seunghee Kim-Schulze, PhD Research Scientist 212.342.0237 212.342.0234 sk2254@columbia.edu Josephine Mitcham Senior Data Manager 212.342.0233 212.342.0234 jm2124@columbia.edu Phyllus Mong Research Assistant 212.342.0237 212.342.0234 pm2321@columbia.edu Dorota M Moroziewicz, MSc Lab Manager, Research Associate 212.342.0237 212.342.0234 dm2110@columbia.edu Qin Wang, PhD Assistant Professor of Clinical Pathology (in Surgery) 212.342.0237 212.342.0234 qw2109@columbia.edu Nurse Practitioners & Physician Assistants Maria Baldo, PA Kathryn Baxter, PA Vesna Cekic, RN Elizabeth Horowitz, RPA-C Staff Josie Diaz Administrative Assistant 212.342.6042 212.342.0234 yd2017@columbia.edu

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