Alexander J Greenstein, MD Email Alexander Greenstein
- ASSOCIATE PROFESSOR | Surgery
- ASSISTANT PROFESSOR | Population Health Science and Policy
- Hospital Affiliation
- The Mount Sinai Hospital
- Physician Office 212-241-8679 212-241-8679
Book an Appointment - Alexander J Greenstein, MD
Dr. Alexander J. Greenstein specializes in minimally invasive (laparoscopic, single incision, robotic) surgery for Crohn's Disease, Ulcerative Colitis, Diverticulitis and other gastrointestinal (colon, small intestine, gallbladder, stomach) tract disorders. He is an Associate Professor of Surgery and a member of the IBD Center at Mount Sinai. Prior to joining as faculty, Dr. Greenstein completed a surgical residency at The Mount Sinai Hospital and a fellowship in minimally invasive surgery at the Oregon Health and Sciences University in Portland, Oregon. In addition, Dr. Greenstein completed a residency in general preventative medicine and attained a Masters in Public Health at the Mount Sinai School of Medicine. Dr. Greenstein graduated from Cornell Medical College in New York with Alpha Omega Alphadistinction after completing his bachelor’s degree in economics cum laude with distinction at Yale University.
Dr. Greenstein is certified by the American Board of Surgery and is a Fellow of the American College of Surgeons (FACS). He has been a first or co-author of more than 50 peer-reviewed manuscripts, has editorial responsibilities at several journals, and has presented his work at both regional and national surgical meetings. He is a recipient of the David A. Dreiling Award for Scholarly Excellence from the Mount Sinai Department of Surgery.
Dr. Greenstein is an active member of multiple surgical societies (ACS, SSAT, SAGES). Research engagements include experiences at the National Institute of Mental Health, the Memorial Sloan Kettering Medical Center and the Brazilian Ministry of Health. His research focuses on advances and techniques in GI surgery for Crohn’s and Ulcerative Colitis. His other research interests lie in health disparities and preventive medicine. In coordination with members of the department of colorectal surgery, Dr. Greenstein is actively involved in the rollout of the Adrian J. Greenstein IBD surgical database whose goal is to answer important surgical questions and improve patient outcomes.
In the News:
- Investigate one of Dr. Greenstein's mystery cases, featured in Reader's Digest. Is it Crohn's Disease or not?
- Watch Dr. Greenstein perform a Minimally Invasive Subtotal Colectomy; a Laparoscopic J pouch for Ulcerative Colitis; Laparoscopic Ileocolic Resection for Crohn’s Disease; and a Strictureplasty for Crohn's Disease
- In this nationally presented video, Dr. Greenstein performs emergency surgery for Perforated Crohn’s Disease during pregnancy
Recommended External Links
Crohn's and Colitis Foundation of America: http://www.crohnscolitisfoundation.org/what-are-crohns-and-colitis/what-is-crohns-disease/
Colon and Rectal Cancer Surgery: https://www.cancer.org/cancer/colon-rectal-cancer/treating/colon-surgery.html
Ostomy Information - United Ostomy Associates of America: https://www.ostomy.org/what-is-an-ostomy/
American Board of Surgery
- Abdominal Hernia
- Colorectal Cancer
- Colorectal Resection
- Colorectal Surgery
- Crohn's Disease
- Hernia Repair
- Inflammatory Bowel Disease
- Laparoscopic Hernia Repair
- Stomach Cancer
- Surgery Second Opinion
- Ulcerative Colitis
BA, Yale University
MD, New York Hospital/Cornell University Medical College
MPH, Mount Sinai School of Public Health
New York Presbyterian - Weill Cornell Medical Center
Residency, Preventive Medicine
Mount Sinai Hospital
Residency, General Surgery
Mount Sinai Hospital
Fellowship, Laparoscopic Surgery
Oregon Health Sciences University
English, French, Spanish
Alpha Omega Alpha
Cum Laude with Distinction in the Major
David A. Dreiling Award for Scholarly Excellence
Mount Sinai Residency Program
Surgical Residents Scholarship Award
Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device and biotechnology companies to improve patient care, develop new therapies and achieve scientific breakthroughs. In order to promote an ethical and transparent environment for conducting research, providing clinical care and teaching, Mount Sinai requires that salaried faculty inform the School of their relationships with such companies.
Dr.Greenstein did not report having any of the following types of financial relationships with industry during 2018 and/or 2019: consulting, scientific advisory board, industry-sponsored lectures, service on Board of Directors, participation on industry-sponsored committees, equity ownership valued at greater than 5% of a publicly traded company or any value in a privately held company. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.
Mount Sinai's faculty policies relating to faculty collaboration with industry are posted on our website. Patients may wish to ask their physician about the activities they perform for companies.
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