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Gary Timmerman, MD  |  location phone (605) 328-3840

Gary Timmerman, MD - Surgery


Medical School
Washington University School of Medicine (St. Louis, MO)
Rush-Presbyterian - St. Lukes Medical Center (Chicago, IL)
American Board of Surgery

Areas of Expertise

General Surgery, Thoracic/Esophageal Surgery, Pancreatic Surgery, Colon & Rectal Surgery, Breast Surgery, Endocrine (Thyroid, Parathyroid & Adrenal) Surgery, Advanced Laparoscopic Surgery, Robotic Assisted Surgery, Upper Endoscopy and Colonoscopy and Trauma Surgery

Languages Spoken



Dr. Timmerman is a Fellow of the American College of Surgeons and also serves as a Clinical Associate Professor at the University of South Dakota School of Medicine, General Surgery.

Member of the Sanford Comprehensive Breast Team
Primary Practice Location

Sanford Surgical Associates

1508 W 22nd Street
Suite 101
Sioux Falls, SD  57105
Get Directions


M–F: 8:00 AM–5:00 PM



(605) 328-3840


(605) 328-3841
Additional Practice Locations

Sanford Center for Digestive Health

1205 S Grange Avenue
Suite 104
Sioux Falls, SD  57105
Get Directions


(605) 328-8500