Hometown: Potomac, Maryland
Undergraduate Education: Cornell University
Medical Education: University of Maryland
Internal Medicine Residency: Northwestern Memorial Hospital
Gastroenterology Fellowship: University of Chicago Hospitals
Board Certification: Gastroenterology, Internal Medicine
Specialty: Gastroenterology
Hospital Affiliation: Northwestern Memorial Hospital
Academic Apppointment: Assistant Professor of Clinical Medicine
Areas of Interest: Celiac Disease, Colon Cancer Screening, Constipation, Crohn's Disease,
Diarrhea, Familial Colon Cancer Syndromes, Hemorrhoid Treatment, Inflammatory Bowel
Disease, Peptic Ulcer Disease, Rectal Bleeding, Swallowing Disorders, Ulcerative Colitis
Professional Memberships: American Gastroenterological Association (AGA), American College
of Gastroenterology (ACG), American Society for Gastrointestinal Endoscopy (ASGE)
Office Hours: Monday through Friday, 8 am to 4 pm
Publications:
Wali R, Khare S, Tretiakova M, Cohen G, Nguyen L, Hart J, Wang J, Wen M, Ramaswamy A, Joseph
L, Sitrin M, Brasitus T, Bissonnette M: “Ursodeoxycholic Acid and F6-D3 Inhibit Aberrant Crypt
Proliferation in the Rat Azoxymethane Model of Colon Cancer: Roles of Cyclin D1 and E-Cadherin.”
Cancer Epidemiology, Biomarkers & Prevention. 2002;11(12):1653-1662.
Khare S, Cerda S, Wali RK, von Lintig FC, Tretiakova M, Joseph L, Stoiber D, Cohen G,
Nimmagadda K, Hart J, Sitrin MD, Boss GR, Bissonnette M: “Ursodeoxycholic Acid Inhibits Ras
Mutations, Wild Type Ras Activation and Cyclooxygenase-2 Expression in Colon Cancer.” Cancer
Research. 2003;63(13):3517-3523.
Cerda SR, Mustafi R, Little H, Cohen G, Khare S, Moore C, Majumder P, Bissonnette M: “Protein
kinase C delta inhibits Caco-2 cell proliferation by selective changes in cell cycle and cell death
regulators.” Oncogene. 2006;25:3123-38.
Cohen G, Mustafi R, Chumsangsri A, Little N, Nathanson J, Cerda S, Jagadeeswaran S, Dougherty
U, Joseph L, Hart J, Yerian L, Tretiakova M, Yuan W, Obara P, Khare S, Sinicrope F, Fichera A,
Boss G, Carroll R, Bissonnette M: “Epidermal Growth Factor Receptor Signaling is Up-Regulated
in Human Colonic Aberrant Crypt Foci.” Cancer Research. 2006;66(11):5656-64.
Fichera A, Little N, Jagadeeswaran S, Dougherty U, Sehdev A, Mustafi R, Cerda S, Yuan W, Khare
S, Tretiakova M, Gong C, Tallerico M, Cohen G, Joseph L, Hart J, Turner JR, Bissonnette M:
“Epidermal growth factor receptor signaling is required for microadenoma formation in the mouse
azoxymethane model of colonic carcinogenesis.” Cancer Research. 2007;67(2):827-35.
Khare S, Mustafi R, Cerda S, Yuan W, Jagadeeswaran S, Dougherty U, Tretiakova M, Samarel A,
Cohen G, Wang J, Moore C, Wali R, Holgren C, Joseph L, Fichera A, Chun Li Y, Bissonnette M:
“Ursodeoxycholic acid suppresses Cox-2 expression in colon cancer cells: roles of Ras, p38, and
CCAAT/Enhancer-Binding Protein.” Nutrition and Cancer. 2008;60(3):389-400.
Lin CF, Cohen G: “Endoscopic repair of colonic perforation following polypectomy.” American
Journal of Gastroenterology. 2009;104(11):2869-70.
Roth MP, Cohen G: “A quarter causing intermittent gastric outlet obstruction.” Gastrointestinal
Endoscopy. 2012;75(1):189-190.
Undergraduate Education: Cornell University
Medical Education: University of Maryland
Internal Medicine Residency: Northwestern Memorial Hospital
Gastroenterology Fellowship: University of Chicago Hospitals
Board Certification: Gastroenterology, Internal Medicine
Specialty: Gastroenterology
Hospital Affiliation: Northwestern Memorial Hospital
Academic Apppointment: Assistant Professor of Clinical Medicine
Areas of Interest: Celiac Disease, Colon Cancer Screening, Constipation, Crohn's Disease,
Diarrhea, Familial Colon Cancer Syndromes, Hemorrhoid Treatment, Inflammatory Bowel
Disease, Peptic Ulcer Disease, Rectal Bleeding, Swallowing Disorders, Ulcerative Colitis
Professional Memberships: American Gastroenterological Association (AGA), American College
of Gastroenterology (ACG), American Society for Gastrointestinal Endoscopy (ASGE)
Office Hours: Monday through Friday, 8 am to 4 pm
Publications:
Wali R, Khare S, Tretiakova M, Cohen G, Nguyen L, Hart J, Wang J, Wen M, Ramaswamy A, Joseph
L, Sitrin M, Brasitus T, Bissonnette M: “Ursodeoxycholic Acid and F6-D3 Inhibit Aberrant Crypt
Proliferation in the Rat Azoxymethane Model of Colon Cancer: Roles of Cyclin D1 and E-Cadherin.”
Cancer Epidemiology, Biomarkers & Prevention. 2002;11(12):1653-1662.
Khare S, Cerda S, Wali RK, von Lintig FC, Tretiakova M, Joseph L, Stoiber D, Cohen G,
Nimmagadda K, Hart J, Sitrin MD, Boss GR, Bissonnette M: “Ursodeoxycholic Acid Inhibits Ras
Mutations, Wild Type Ras Activation and Cyclooxygenase-2 Expression in Colon Cancer.” Cancer
Research. 2003;63(13):3517-3523.
Cerda SR, Mustafi R, Little H, Cohen G, Khare S, Moore C, Majumder P, Bissonnette M: “Protein
kinase C delta inhibits Caco-2 cell proliferation by selective changes in cell cycle and cell death
regulators.” Oncogene. 2006;25:3123-38.
Cohen G, Mustafi R, Chumsangsri A, Little N, Nathanson J, Cerda S, Jagadeeswaran S, Dougherty
U, Joseph L, Hart J, Yerian L, Tretiakova M, Yuan W, Obara P, Khare S, Sinicrope F, Fichera A,
Boss G, Carroll R, Bissonnette M: “Epidermal Growth Factor Receptor Signaling is Up-Regulated
in Human Colonic Aberrant Crypt Foci.” Cancer Research. 2006;66(11):5656-64.
Fichera A, Little N, Jagadeeswaran S, Dougherty U, Sehdev A, Mustafi R, Cerda S, Yuan W, Khare
S, Tretiakova M, Gong C, Tallerico M, Cohen G, Joseph L, Hart J, Turner JR, Bissonnette M:
“Epidermal growth factor receptor signaling is required for microadenoma formation in the mouse
azoxymethane model of colonic carcinogenesis.” Cancer Research. 2007;67(2):827-35.
Khare S, Mustafi R, Cerda S, Yuan W, Jagadeeswaran S, Dougherty U, Tretiakova M, Samarel A,
Cohen G, Wang J, Moore C, Wali R, Holgren C, Joseph L, Fichera A, Chun Li Y, Bissonnette M:
“Ursodeoxycholic acid suppresses Cox-2 expression in colon cancer cells: roles of Ras, p38, and
CCAAT/Enhancer-Binding Protein.” Nutrition and Cancer. 2008;60(3):389-400.
Lin CF, Cohen G: “Endoscopic repair of colonic perforation following polypectomy.” American
Journal of Gastroenterology. 2009;104(11):2869-70.
Roth MP, Cohen G: “A quarter causing intermittent gastric outlet obstruction.” Gastrointestinal
Endoscopy. 2012;75(1):189-190.
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Greg S. Cohen, MD
Gastroenterology
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