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David B. Stewart, M.D.

Office Information

Penn State Hershey Surgical Specialties
200 Campus Drive, Entrance 4, Suite 3100
Hershey, PA 17033
Tel: 800-243-1455 / 717-531-8887 Fax: 717-531-0646


Colon & Rectal Surgery

Patient Services Provided

Crohn's Disease Colon and Rectal Cancers Diverticulitis Inflammatory Bowel Disease Pelvic Floor Disorders Ulcerative Colitis

Practice Locations

Professional Education

Fellowship, Surgery, Colon/Rectal, Barnes-Jewish Hospital/Washington Univ. School of Medicine (2008) Residency, Surgery, General, Santa Barbara Cottage Hospital (California) (2006) M.D., Baylor College of Medicine (Texas) (2001)

Research Interests

Clostridium difficile (C. diff)
Single Site Laparoscopy

Academic Interests

Clostridium difficile (C. diff)
Inflammatory Bowel Disease
Colon and Rectal Cancer
Single Site Laparoscopy
Pelvic Floor Disorders


Pogacnik JS, Messaris E, Deiling SM, Connelly TM, Berg AS, Stewart DB, McKenna KJ, Poritz LS, Koltun WA.
Increased risk of incisional hernia after sigmoid colectomy for diverticulitis compared with colon cancer.
J Am Coll Surg. 2014 May;218(5):920-8. Epub 2014 Feb 19.
Sehgal R, Berg A, Figueroa R, Poritz LS, McKenna KJ, Stewart DB, Koltun WA.
Risk factors for surgical site infections after colorectal resection in diabetic patients
J Am Coll Surg. 2011 Jan;212(1):29-34. Epub 2010 Nov 30.
Stewart DB, Messaris E.
Adequate margins for anorectal cancer can be achieved by single-site laparoscopy.
 J Laparoendosc Adv Surg Tech A. 2013 Apr;23(4):316-22. Epub 2013 Feb 15.
Sehgal R, Berg A, Polinski JI, Hegarty JP, Lin Z, McKenna KJ, Stewart DB, Poritz LS, Koltun WA.
Mutations in IRGM are associated with more frequent need for surgery in patients with ileocolonic Crohn's disease.
Dis Colon Rectum. 2012 Feb;55(2):115-21.
Connelly TM, Sehgal R, Berg AS, Hegarty JP, Deiling S, Stewart DB, Poritz LS, Koltun WA.
Mutation in TAGAP is protective of anal sepsis in ileocolic Crohn's disease.
Dis Colon Rectum. 2012 Nov;55(11):1145-52.

Honors and Awards

Department of Surgery Teacher of the Year Award, Santa Barbara Cottage Hospital, 2006