Walter Longo, MD, MBA, FACS, FASCRS

Professor of Surgery (Gastrointestinal) and of Obstetrics, Gynecology, and Reproductive Sciences; Chief, Section of Gastrointestinal Surgery; Director, Colon and Rectal Surgery; Director of Surgical Education

Departments & Organizations

Surgery: Bariatric Surgery Program | Gastrointestinal Surgery: Colorectal Surgery: Colon and Rectal Surgery, Yale Bariatric Surgery Program

Gastrointestinal Motility Program

Inflammatory Bowel Disease Program

Yale Cancer Center: Gastrointestinal Cancers Program

Yale Medicine

Office of Cooperative Research


Walter E Longo, MD, MBA , FACS, FASCRS, is one of five Yale surgeons who is board-certified specifically in colorectal cancer. He earned his medical degree from New York Medical College. He is fellowship trained and is a Board Certified General Surgeon and a Board Certified Colon and Rectal Surgeon.

Dr. Longo is committed to providing patients with the highest standards for the diagnosis and medical and surgical management of the diseases of the colon, rectum, and anus using minimally invasive techniques.

He specializes in screening and management of colon cancer; rectal cancer; anal cancer; sphincter preserving surgery; transanal removal of cancer; diverticulitis; inflammatory bowel disease; stricturoplasty; bowel resection; ostomy; polyposis syndromes and adenomatous polyps; hemorrhoids; fissures; fistulas; anal abscesses; disorders of continence; and pelvic floor disorders.

Education & Training

MBA St. Louis University (2001)
MD New York Medical College (1984)
Fellow Cleveland Clinic Foundation, Cleveland, OH
Chief Resident Yale University School of Medicine, New Haven, CT
Senior Resident Yale Medical Center, New Haven, CT
Research Fellow Yale University School of Medicine, New Haven, CT
Junior Resident Yale University Medical Center, New Haven, CT
Intern Yale University Medical Center, New Haven, CT
Board Certification AB of Surgery, Surgery, General (1991, recertified: 2012)
Board Certification AB of Colon and Rectal Surgery, Colon and Rectal Surgery (1995, recertified: 2015)

Honors & Recognition

  • Connecticut Magazine Top Docs 2016Connecticut Magazine (2016)

  • Connecticut Magazine Top Docs 2015Connecticut Magazine (2015)

  • Master of Arts, Honoris CausaYale University, New Haven, CT (2004)

  • Medical Student Class of 2003, Award in Excellence in Surgical Education (2002)

  • Alpha Epsilon Delta (1975)

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Contact Info

Walter Longo, MD, MBA, FACS, FASCRS
Patient Care Locations
GastrointestinalYale Physicians Building
800 Howard Avenue, Ste 3rd Floor

New Haven, CT 06519
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Yale Health-Specialty ServicesYale Health Center
55 Lock Street

New Haven, CT 06511
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Mailing Address
Colorectal SurgeryPO Box 208062
New Haven, CT 06520-8062

Curriculum Vitae