• Timothy Wengert MD

  • Surgeon - Colorectal

    • 1000 North Oak Avenue 3F1 Marshfield, WI 54449


Fellowship, Colon and Rectal Surgery, Ferguson/Blodgett Hospital, Grand Rapids, MI
Residency, General Surgery, Marshfield Clinic/St Joseph's Hospital, Marshfield, WI
Internship, Surgery, Marshfield Clinic/St. Joseph's Hospital, Marshfield, WI
MD, University of Iowa College of Medicine, Iowa City, IA
BS, Chemistry, Loras College, Dubuque, IA

Work Experience

2009 to Present:
Clinical Instructor - Surgery, University of Wisconsin Medical School, Madison, WI
1991 to Present:
Colorectal Surgeon, Marshfield Clinic Inc. - Marshfield Center, Marshfield, WI
1991 to Present:
Attending Physician, Marshfield Clinic Inc. - Marshfield Center, Marshfield, WI
1991 to Present:
Attending Physician, MCHS Hospitals Inc. d/b/a Marshfield Medical Center, Marshfield, WI
1990 to 1991:
Physician, National Emergency Services, Grand Rapids, MI
1986 to 1990:
Physician, St. Joseph's Hosptal, Marshfield, WI

Board Certifications

1997 to 2021:
The American Board of Surgery - General Surgery, Recertified
1992 to 2022:
The American Board of Surgery - Colon and Rectal Surgery, Recertified

Professional Societies

American College of Surgeons, Member
American Medical Association, Member
American Society of Colon & Rectal Surgeons, Member
Midwest Surgical Association, Member
Society of American Gastrointestinal Endoscopic Surgeons, Member
Wisconsin Medical Society, Member
Wisconsin Surgical Society, Member

Select Publications

  • Wengert TJ. (1991). Colonic duplications. Selected Topics in Colorectal Surgery. 4 :4.
  • Senagore A, Mazier WP, Luchtefeld MA, MacKeigan JM, Wengert TJ. (1993 November). Treatment of advanced hemorrhoidal disease: a prospective, randomized comparison of cold scalpel vs. contact Nd:YAG laser. Dis Colon Rectum. 36(11):1042-1049.
    PubMed ID: 8223057
  • Nitschke LF, Schlosser CT, Berg RL, Selthafner JV, Wengert TJ, Avecilla CS. (1996 April). Does patient-controlled analgesia achieve better control of pain and fewer adverse effects than intramuscular analgesia? A prospective randomized trial. Arch Surg. 131(4):417-423.
    PubMed ID: 8615729
  • Vats HS, Wengert TJ, Torbey CF. (2006 September). Gastrointestinal stromal tumor with dieulafoy lesion: a novel association. Clin Med Res. 4(3):228-229.
    PubMed ID: 16988103
  • Nelson RScott, Ewing BM, Wengert TJ, Thorson AG. (2008 December). Clinical outcomes of complicated diverticulitis managed nonoperatively. The American Journal of Surgery. 196(6):969-72; discussion 973-4.
    PubMed ID: 19095117