Ram's Doctoral background and academic interests are in in computational modeling of complex decisions, algorithm design and implementation, and data driven decision making. Outside of clinical work, his main competencies in this regard are software development, algorithm design and implementation, cost-effectiveness analysis, decision analysis through computational models. He has also collaborated with industry to create and deploy operation specific software involving statistical computing and reasoning under inference. He has been practicing clinical Emergency Medicine in both community and academic settings for over 20 years. At Stanford, he primarily works in the Pediatric Emergency Department.

Clinical Focus

  • Emergency Medicine

Academic Appointments

Professional Education

  • Residency: Stanford University Emergency Medicine Residency (2000) CA
  • Internship: UC Irvine Obstetrics and Gynecology Residency (1997) CA
  • Board Certification: Emergency Medicine, American Board of Emergency Medicine (2001)
  • Ph.D., Stanford University, Computational Decision Modeling (2007)
  • MD, University of Michigan, Medicine (1996)
  • BS, Stanford University, Biology (1991)
  • BA, Stanford University, Political Economy (1991)

All Publications

  • Patient and Physician Willingness to Use Personal Health Records in the Emergency Department WESTERN JOURNAL OF EMERGENCY MEDICINE Menon, A. S., Greenwald, S., Ma, T. J., Kooshesh, S., Duriseti, R. 2012; 13 (2): 172–75


    Patient care in the emergency department (ED) is often complicated by the inability to obtain an accurate prior history even when the patient is able to communicate with the ED staff. Personal health records (PHR) can mitigate the impact of such information gaps. This study assesses ED patients' willingness to adopt a PHR and the treating physicians' willingness to use that information.This cross-sectional study was answered by 184 patients from 219 (84%) surveys distributed in an academic ED. The patient surveys collected data about demographics, willingness and barriers to adopt a PHR, and the patient's perceived severity of disease on a 5-point scale. Each patient survey was linked to a treating physician survey of which 210 of 219 (96%) responded.Of 184 surveys completed, 78% of respondents wanted to have their PHR uploaded onto the Internet, and 83% of providers felt they would access it. Less than 10% wanted a software company, an insurance company, or the government to control their health information, while over 50% wanted a hospital to control that information. The patients for whom these providers would not have used a PHR had a statistically significant lower severity score of illness as determined by the treating physician from those that they would have used a PHR (1.5 vs 2.4, P < 0.01). Fifty-seven percent of physicians would only use a PHR if it took less than 5 minutes to access.The majority of patients and physicians in the ED are willing to adopt PHRs, especially if the hospital participates. ED physicians are more likely to check the PHRs of more severely ill patients. Speed of access is important to ED physicians.

    View details for DOI 10.5811/westjem.2011.11.6844

    View details for Web of Science ID 000422594200007

    View details for PubMedID 22900108

    View details for PubMedCentralID PMC3415806

  • Cost-Effectiveness of Strategies for Diagnosing Pulmonary Embolism Among Emergency Department Patients Presenting With Undifferentiated Symptoms ANNALS OF EMERGENCY MEDICINE Duriseti, R. S., Brandeau, M. L. 2010; 56 (4): 321-332


    Symptoms associated with pulmonary embolism can be nonspecific and similar to many competing diagnoses, leading to excessive costly testing and treatment, as well as missed diagnoses. Objective studies are essential for diagnosis. This study evaluates the cost-effectiveness of different diagnostic strategies in an emergency department (ED) for patients presenting with undifferentiated symptoms suggestive of pulmonary embolism.Using a probabilistic decision model, we evaluated the incremental costs and effectiveness (quality-adjusted life-years gained) of 60 testing strategies for 5 patient pretest categories (distinguished by Wells score [high, moderate, or low] and whether deep venous thrombosis is clinically suspected). We performed deterministic and probabilistic sensitivity analyses.In the base case, for all patient pretest categories, the most cost-effective diagnostic strategy is to use an initial enzyme-linked immunosorbent assay D-dimer test, followed by compression ultrasonography of the lower extremities if the D-dimer is above a specified cutoff. The level of the preferred cutoff varies with the Wells pretest category and whether a deep venous thrombosis is clinically suspected. D-dimer cutoffs higher than the current recommended cutoff were often preferred for patients with even moderate and high Wells categories. Compression ultrasonography accuracy had to decrease below commonly cited levels in the literature before it was not part of a preferred strategy.When pulmonary embolism is suspected in the ED, use of an enzyme-linked immunosorbent assay D-dimer assay, often at cutoffs higher than those currently in use (for patients in whom deep venous thrombosis is not clinically suspected), followed by compression ultrasonography as appropriate, can reduce costs and improve outcomes.

    View details for DOI 10.1016/j.annemergmed.2010.03.029

    View details for Web of Science ID 000282854500004

    View details for PubMedID 20605261

  • Musculoskeltal Emergencies A Practical Guide to Pediatric Emergency Medicine Ram Duriseti 2010; 1
  • Gastrointestinal Emergencies A Practical Guide to Pediatric Emergency Medicine Ram Duriseti 2010; 1
  • Non-Bayesian Classification to Obtain High Quality Clinical Decisions Optimization in Medicine and Biology Ram Duriseti 2008
  • Using Influence Diagrams in Cost-Effectiveness Analysis for Medical Decisions OPTIMIZATION IN MEDICINE AND BIOLOGY Duriseti, R. S., Lim, G. J., Lee, E. K. 2008: 61–94
  • Non-Bayesian Classification to Obtain High Quality Clinical Decisions OPTIMIZATION IN MEDICINE AND BIOLOGY Duriseti, R. S., Lim, G. J., Lee, E. K. 2008: 95–115
  • Using Influence Diagrams in Cost Effectiveness Analysis for Medical Decisions Optimization in Medicine and Biology Ram Duriseti 2008
  • Value of quantitative D-dimer assays in identifying pulmonary embolism: Implications from a sequential decision model ACADEMIC EMERGENCY MEDICINE Duriseti, R. S., Shachter, R. D., Brandeau, M. L. 2006; 13 (7): 755-766


    To examine the cost-effectiveness of a quantitative D-dimer assay for the evaluation of patients with suspected pulmonary embolism (PE) in an urban emergency department (ED).The authors analyzed different diagnostic strategies over pretest risk categories on the basis of Wells criteria by using the performance profile of the ELISA D-dimer assay (over five cutoff values) and imaging strategies used in the ED for PE: compression ultrasound (CUS), ventilation-perfusion (VQ) scan (over three cutoff values), CUS with VQ (over three cutoff values), computed tomography (CT) angiogram (CTA) with pulmonary portion (CTP) and lower-extremity venous portion, and CUS with CTP. Data used in the analysis were based on literature review. Incremental costs and quality-adjusted-life-years were the outcomes measured.Computed tomography angiogram with pulmonary portion and lower-extremity venous portion without D-dimer was the preferred strategy. CUS-VQ scanning always was dominated by CT-based strategies. When CTA was infeasible, the dominant strategy was D-dimer with CUS-VQ in moderate- and high-Wells patients and was D-dimer with CUS for low-Wells patients. When CTP specificity falls below 80%, or if its overall performance is markedly degraded, preferred strategies include D-dimer testing. Sensitivity analyses suggest that pessimistic assessments of CTP accuracy alter the results only at extremes of parameter settings.In patients in whom PE is suspected, when CTA is available, even the most sensitive quantitative D-dimer assay is not likely to be cost-effective. When CTA is not available or if its performance is markedly degraded, use of the D-dimer assay has value in combination with CUS and a pulmonary imaging study. These conclusions may not hold for the larger domain of patients presenting to the ED with chest pain or shortness of breath in whom PE is one of many competing diagnoses.

    View details for DOI 10.1197/j.aem.2006.02.011

    View details for Web of Science ID 000239051800008

    View details for PubMedID 16723725