Professor of Surgery Emeritus

Rush University & Rush Medical College, Chicago, IL, USA

Adjunct Professor of Surgery

Tufts Medical Center & Tufts University, Boston, MA, USA

Adjunct Professor, Department of Surgery

The George Washington University, USA

Attending Surgeon

AdventHealth Heart of Florida, Davenport, FL, USA

Attending Surgeon

AdventHealth Hospital Celebration, FL, USA

Attending Surgeon

Rush University Medical Center, USA

Chief, Division of Colon and Rectal Surgery

Tufts Medical Center and the Floating Hospital for Children, USA

Attending Surgeon

Shady Grove Adventist Hospital, Gaithersburg, MD, USA

Chair, Surgical Research Committee, Department of Surgery

The George Washington University, USA

Consultant Surgeon

Veterans Administration Medical Center, Washington, DC, USA

Attending Surgeon

The George Washington University Hospital, USA

Director, Division of Colon and Rectal Surgery

The George Washington University, USA

Consultant Surgeon

Children’s National Medical Center, USA

Assistant Professor, Department of Surgery

The George Washington University, USA

American Society of Colon and Rectal Surgeons (FASCRS)

1992

American College of Surgeons (FACS)

1992

MD

University of Minnesota, Minneapolis, MN, USA

1981

American College of Surgeons (ACS)

American Medical Association (AMA)

American Neurogastroenterology and Motility Society (ANMS)

American Society of Adults with Pseudo-Obstruction (ASAP)

American Society of Colon and Rectal Surgeons (ASCRS)

Boston Area Mayo Alumni Association

Central Surgical Society

Chesapeake Colorectal Society (CCRS)

Chicago Society of Colon and Rectal Surgeons

Collaborative Group of Americas on Inherited Colorectal Cancer (CGA-ICC)

Crohn's and Colitis Foundation (CCFA)

Functional Brain-Gut Research Group

International Society of University Colon and Rectal Surgeons

Massachusetts Chapter of the American College of Surgeons

Medical Society of the District of Columbia

Midwest Colorectal Society

New England Society of Colorectal Surgeons

Priestley Society, Surgical Alumni of the Mayo Clinic

Society of American Gastrointestinal Endoscopic Surgeons (SAGES)

Society of Surgical Oncology

Society for Surgery of the Alimentary Tract

Washington Academy of Surgery

Washington Area Mayo Alumni Association

https://pubmed.ncbi.nlm.nih.gov/32166373/

https://pubmed.ncbi.nlm.nih.gov/29340817/

https://pubmed.ncbi.nlm.nih.gov/28148456/

https://pubmed.ncbi.nlm.nih.gov/27704228/

https://pubmed.ncbi.nlm.nih.gov/26165209/

https://pubmed.ncbi.nlm.nih.gov/25910667/