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Andrew Sean Kastenmeier, MD

Andrew Sean Kastenmeier, MD

Assistant Professor

"A comprehensive evaluation, a thoughtful plan of care, a careful review of all medical and surgical options, precise surgical technique, compassionate post-operative care, and a commitment to open communication are the key aspects of my patient care philosophy. I strive to offer the most current surgical technology with the most safe and effective outcomes possible."

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General Surgery Appointments and Referrals

(414) 805-5026

Sargeant Health Center

(414) 805-5540




  • General Surgery

Board Certification

  • General Surgery

Hospital Affiliations

  • Froedtert Hospital

Patient Ages Seen

  • Adolescent
  • Adult
  • Senior

Languages Spoken

  • English

Diseases & Conditions

  • Achalasia
  • Gallbladder Disease
  • Gastroesophageal Reflux Disease (GERD)
  • Gastroparesis
  • Hernia
  • Para-esophageal Hernia

Treatments & Services

  • Abdominal Wall Reconstruction
  • Advanced Diagnostic Endoscopy
  • Advanced Laparoscopic Surgery
  • Advanced Therapeutic Endoscopy
  • Cholecystectomy
  • Complex Abdominal Hernia Repair
  • Esophageal Myotomy
  • Heller Myotomy
  • Inguinal (groin) Hernia Repair
  • Laparoscopic Hiatal Hernia Repair
  • Laparoscopic Inguinal/Open
  • Laparoscopic Nissen Fundoplication
  • Laparoscopic Paraesophageal Hernia Repair
  • Laparoscopic Splenectomy
  • Laparoscopic Ventral Hernia/Open
  • LINX ® Reflux Management System for GERD
  • Per-Oral Endoscopic Myotomy (POEM)
  • Umbilical Hernia Repair

Clinic Locations

General Surgery - Froedtert

9200 West Wisconsin Avenue
Milwaukee WI,  53226
(414) 805-5800
Fax:(414) 805-8199
Get directions

Sargeant Health Center

840 North 87th Street
Milwaukee WI,  53226
(414) 805-5540
Get directions




Andrew S. Kastenmeier, MD, joins Froedtert & The Medical College of Wisconsin as an Assistant Professor of Surgery. He completed his surgical residency at the University of Utah in Salt Lake City. He then pursued specialty fellowship training in advanced endoscopic and laparoscopic gastrointestinal surgery at Legacy Health in Portland, OR. After growing up in Cedarburg, WI, he now returns to the Milwaukee area as a member of the Division of General Surgery.


His clinical interests include minimally invasive (laparoscopic) surgery of the gastrointestinal tract, minimally invasive surgery for reflux disease and hiatal hernias, advanced endoscopic surgery of the stomach and esophagus, bariatric (obesity) surgery, and hernia repair surgery.  His research focus is on clinical outcomes in foregut surgery, device development, new surgical technology, and advanced endoscopic surgery.  He is a minimally invasive surgeon who serves on national committees and has membership in key surgical professional societies.

Education / Training

  • Doctor of Medicine - University of Wisconsin Medical School - Madison (2004)
  • Residency, General Surgery - University of Utah - Salt Lake City (2004-2010)
  • Residency, Surgical Research - University of Utah - Salt Lake City (2007-2008)
  • Fellowship, Minimally Invasive and Foregut Surgery - Legacy Health - Portland, OR (2010-2011)