All work, including work in progress, is listed. The work falls into one of the following categories: Published / Under submission / In preparation.
1. Book chapter(s)
a. Najiya Fatma, Pranav Shankar Girish, Varun Ramamohan (2024). Simulation and Machine Learning Based Real-Time Delay Prediction for Complex Queuing Systems. In Hybrid Modeling and Simulation: Conceptualizations, Methods and Applications (pp. 185–212). Cham: Springer Nature Switzerland.
DOI: 10.1007/978-3-031-59999-6_8
2. Journal publications
a. Najiya Fatma, Kaveri Kala, Varun Ramamohan. Towards Mitigating Overcrowding in Urban Indian Healthcare Facilities: Stakeholder Perception Analysis for Existing and Potential New Patient Referral Mechanisms. 2025. BMC Health Services Research. 25, 1428 (2025).
DOI: 10.1186/s12913-025-13602-y.
b. Amit Alam, S. Golob, Suhani Patel, Najiya Fatma, Dorry Segev, Allan Massie, M. Moussa, E. Flattery, K. Phillips, Brian Wayda, J.N. Katz, D. Stewart, Sommer Gentry, R.I. Goldberg, S. Rao, A. Reyentovich, Nader Moazami. Consequences of Patient Denial at First Exemption Request for Cardiac Transplantation. 2025. Letter to the Editor. The Journal of Heart and Lung Transplantation.
DOI: 10.1016/j.healun.2025.06.025
c. Aparna Venkataraman, Najiya Fatma, Sisira Edirippulige, Varun Ramamohan. Facilitators and Barriers for Telemedicine Systems in India from Multiple Stakeholder Perspectives and Settings. Telemedicine and e-Health, 2024, 30(5), 1341-1356.
DOI: 10.1101/2328898010.
d. Najiya Fatma, Varun Ramamohan. Healthcare seeking behavior among patients visiting public primary and secondary healthcare facilities in an urban Indian district: A cross-sectional quantitative analysis. PLOS Global Public Health, 2023, 3(9), e0001101.
DOI: 10.1371/journal.pgph.0001101.
e. Najiya Fatma, Varun Ramamohan. Patient Diversion Using Real-time Delay Predictions Across Healthcare Facility Networks. OR Spectrum, 2023; 45:437-476.
DOI: 10.1007/s00291-022-00704-w.
3. Peer-reviewed conference proceedings
a. Najiya Fatma, Varun Ramamohan. A Generic Modeling Approach Towards Simulating an Urban Primary and Secondary Healthcare Facility Network. Proceedings of the 2023 Annual Modeling and Simulation (ANNSIM) Conference, May 23—26, Ontario (Canada), pp. 1–12, IEEE Press.
DOI: 10.10155357/0010837400003117.
b. Najiya Fatma, Varun Ramamohan. Outpatient Diversion using Real-Time Length of Stay Predictions. Proceedings of ICORES 2022: 11th International Conference on Operations Research & Enterprise Systems, pp. 56–66, SCITEPress.
DOI: 10.5220/0010837400003117.
c. Najiya Fatma, Varun Ramamohan. Patient Diversion Across Primary Health Centers Using Real-Time Delay Predictors. 2021 Institute of Industrial & Systems Engineers Annual Meeting Proceedings, May 22–25, pp. 441-446, Institute of Industrial & Systems Engineers (IISE).
Preprint: arXiv:2101.11074.
d. Najiya Fatma, Mohd Shoaib, Navonil Mustafee, Varun Ramamohan. Primary Healthcare Delivery Network Simulation Using Stochastic Metamodels. Proceedings of the 2020 Winter Simulation Conference, December 13–16, Orlando FL (USA), pp. 818-829, IEEE Press. Invited paper.
DOI: 10.1109/WSC48552.2020.9384069.
4. Technical report(s)
a. Najiya Fatma, Arya TR, Varun Ramamohan. Dynamic Route Planning for Combat Aircraft using Network Optimization Methods. November 2023.
5. Poster presentations and selected talks
a. Najiya Fatma, Suhani S. Patel, Grace R. Lyden, Nader Moazami, Brian Wayda, William F. Parker, Sommer E. Gentry. Waitlist Mortality Risk (US-CRS Score) Distribution Among Status 1 and 2 Adult Heart Transplant Candidates with Exceptions. World Transplant Congress, 2-6, August 2025, San Francisco, USA.
DOI: 10.1016/j.ajt.2025.07.064
b. Golob S., Suhani Patel, Darren Stewart, Najiya Fatma, Dorry Segev, Allan Massie, Moussa M., Rana M., Singh P., Flattery E., Phillips K., Brian Wayda, Katz J., Goldberg R., Rao S., Reyentovich A., Nader Moazami, Amit Alam. Outcomes of Patients Denied First Listing by Exception Request. World Transplant Congress, 2-6, August 2025, San Francisco, USA.
DOI: 10.1016/j.ajt.2025.07.1359
c. Najiya Fatma, Varun Ramamohan. Real-Time Public Healthcare Facility Assignment Using Lengths of Stay Prediction. 56th Annual Convention of Operational Research Society of India (2023-ORSI), 18-20, December 2023, IISc Bangalore, India.
d. Najiya Fatma, Pranav Shankar Girish, Varun Ramamohan. Real-Time Delay Prediction for Kidney Transplantation System. 2023 Winter Simulation Conference, December 10-13, San Antonio, Texas, USA.
e. Najiya Fatma, Varun Ramamohan. Analytical and Simulation-Driven Machine Learning Methods for Generating RealTime Outpatient Length-of-Stay Predictions. 2022 Winter Simulation Conference, December 11-14, Singapore.
Extended abstract.
f. Najiya Fatma, Varun Ramamohan. Real-Time Delay Prediction based Patient Diversion Across Healthcare Facility Networks. INFORMS 2021 Annual Meeting, October 24 – 27, California, USA.
6. Under submission / In preparation / To be decided
a. Najiya Fatma, Soham Das, Arya T.R., Kushal Gupta, Varun Ramamohan. Dynamic Route Planning for Military Aircraft Using Network Optimization Methods. To be decided.
b. Najiya Fatma, Bayzhan Mukatay, Meghan E. Meredith, Daniyar Akizhanov, Dorry L. Segev, Bonnie E. Lonze, Sommer E. Gentry. A Simulation of Decreasing Non-use by Allocating Non-Ideal Kidneys in Reverse-Priority Order and Decreasing Acceptance Probability Order. 2026.
Submitted
c. Najiya Fatma, Suhani S. Patel, Grace R. Lyden , Nader Moazami, Brian Wayda, William F. Parker, Sommer E. Gentry. Waitlist Mortality Risk (US-CRS Score) Distribution Among Status 1 and 2 Adult Heart Transplant Candidates with Exceptions. 2025.
Submitted
d. Bayzhan Mukatay, Najiya Fatma, Ruiqi Xue, Daniyar Akhizhanov, Michal A. Mankowski, Allan B. Massie, Sommer E. Gentry. Designing a Longevity Matching Policy for Continuous Distribution using Simulation Optimization. 2026.
Submitted
e. Najiya Fatma, Varun Ramamohan. Healthcare Facility Assignment using Queueing-theoretic and Simulation cum Machine Learning Based Real-Time Length of Stay Predictors. 2025.
In preparation