Design and analysis of gastroenterology (GI) clinic in Digestive Health Center of University of Wisconsin Health

  • Xiang Zhong
  • Jie Song
  • Jingshan Li
  • Susan M. Ertl
  • Lauren Fiedler


This paper is devoted to the design and analysis of the gastroenterology (GI) clinic in the Digestive Health Center (DHC) of University of Wisconsin Health. The DHC will consolidate several existing clinic and endoscopy locations into a single center. First, the work flow at a current GI clinic is studied. A Markov chain model is developed and then extended to non-Markovian case to evaluate patient average length of stay and staff utilization. The model is validated by the data observed in the clinic. It is shown that the model can provide accurate estimation of system performance. Then, using such a model, design options of the new GI clinic in the DHC are studied. To investigate the impact of different system configurations, what-if analyses are carried out and different patient check-out processes are investigated. Finally, recommendations for enhancing service at the new GI clinic are proposed to the DHC leadership.


Gastroenterology (GI) Patient flow Markov chain  Length of stay Staff utilization Check-out process 



The authors thank L. Woodhouse and other staff of University of Wisconsin Medical Foundation and G. Eaton, G. Tomas, A. Velando and S. Wirsbinski of University of Wisconsin - Madison for their help in the project. This work is supported in part by NSF Grant No. CMMI-1233807 and NSFC Grant No. 71301003


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Xiang Zhong
    • 1
  • Jie Song
    • 2
  • Jingshan Li
    • 1
  • Susan M. Ertl
    • 3
  • Lauren Fiedler
    • 3
  1. 1.Department of Industrial and Systems EngineeringUniversity of Wisconsin - MadisonMadisonUSA
  2. 2.Department of Industrial and Management EngineeringPeking UniversityBeijingChina
  3. 3.University of Wisconsin Medical FoundationMiddletonUSA

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