Javad Taheri

Associate Research Professor Emeritus

Up until his retirement in June 2021, Javad Taheri was teaching and doing research in the industrial engineering field at NC State for more than two decades. From 1996-2002, Taheri served as an Associate Adjunct Professor in the Integrated Manufacturing Systems Engineering Institute, and from 2002 to 2009 he served as an Associate Adjunct Professor and from 2009 to present as Associate Research Professor in the Edward P. Fitts Department of Industrial and Systems Engineering. Since 2009, Taheri has also served as Operations Research Analyst at the Durham Veterans Affairs Medical Center where he works closely with the clinical and administrative staff in applying systems engineering methodologies to health care performance improvement. He has successfully applied these skills in redesigning a number of units within the health system, including the chemotherapy unit, gastrointestinal endoscopy unit, and emergency room. Taheri also actively collaborates with the Duke Clinical Research Institute in designing innovative interventions for improving the quality and efficiency of gastrointestinal endoscopy Units. Prior to joining NC State, Taheri worked for Nortel from 1984-2002 where he was the Director of Operations Research from 1994 to 2002.


Research Interests

Taheri’s research interests Business process modeling and simulation, patient flow analysis, scheduling, and decision support tool development.



Ph.D.Doctor of PhilosophyNC State University1983
MSMSWestern Michigan University1977
BSBachelor of ScienceTehran University1974



Improving chemotherapy infusion operations through the simulation of scheduling heuristics: a case study
Slocum, R. F., Jones, H. L., Fletcher, M. T., McConnell, B. M., Hodgson, T. J., Taheri, J., & Wilson, J. R. (2020), Health Systems, 2, 1–16.
Decreasing Endoscopy No-Shows Using a Lean Improvement Framework
Finn, R. T., Lloyd, B., Patel, Y. A., Allen, J. T., Cornejo, J., Davis, A., … Gellad, Z. F. (2019, June), CLINICAL GASTROENTEROLOGY AND HEPATOLOGY, Vol. 17, pp. 1224-+.
Sa1491 Automating Endoscopy Unit Efficiency Metrics: Leveraging the Electronic Health Record for Process Improvement
Gellad, Z., Chermak, D., Brown, E., & Taheri, J. (2015), Gastrointestinal Endoscopy, 81(5), AB236.
Gellad, Z. F., & Taheri, J. (2014), Clinical Gastroenterology and Hepatology, 12(3), 527.
Systems Engineering Methods for Enhancing the Value Stream in Public Health Preparedness: The Role of Markov Models, Simulation, and Optimization
Yaylali, E., Ivy, J. S., & Taheri, J. (2014), PUBLIC HEALTH REPORTS, 129, 145–153.
Endoscopy Unit Efficiency: Quality Redefined
Gellad, Z. F., Thompson, C. P., & Taheri, J. (2013), Clinical Gastroenterology and Hepatology, 11(9), 1046–1049.e1.
A simulation study to reduce nurse overtime and improve patient flow time at a hospital endoscopy unit
Taheri, J., Gellad, Z., Burchfield, D., & Cooper, K. (2012), 2012 winter simulation conference (wsc).
Su1270 Discrete Event Simulation Modeling: A Valuable Tool to Optimize Endoscopy Unit Efficiency
Gellad, Z. F., Taheri, J., Burchfield, D., Cooper, K., Lothrop, S., & AL-Kawas, F. H. (2012), Gastrointestinal Endoscopy, 75(4), AB273–AB274.
Algorithms for the model configuration problem
Morgan, S. D., Fathi, Y., & Taheri, J. (2004), IIE TRANSACTIONS, 36(2), 169–180.

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Javad Taheri