David Ellsworth

Experience

• 

  Los Alamos National Laboratory

  Jun 1987 - Aug 1987

  Graduate Research Assistant

  Physics division

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  Lockheed Martin

  Jan 1990 - Jan 1994

  Systems Engineer

  Analyzed satellite orbit and attitude problems by creating fast analysis tools that provided critical information to U.S. government program managers early in mission development.Participated in a task force of scientists and engineers that solved a critical satellite control problem. Selected to present my contribution directly to overseeing General.Verified software and hardware design requirements by creating detailed simulations. Studied findings with statistical analysis.

• 

  Truven Health Analytics

  Jan 1995 - Jan 2016

  Developed strategy to transition logistic regression DataBridge mortality and complication models from ICD-9 to ICD-10.Updated Top 100 Hospital regression models.Enhanced fraud and abuse algorithms for a Medicare Advantage client.Modeled effect of Affordable Care Act on inpatient admissions.Researched disease trending in inpatient admissions. Primary architect of Reimbursement Benchmarks. Wrote 40K lines of SAS to process huge MarketScan database into regression equation and out into Excel reports.Created an Excel/VBA user interface for Outpatient Opportunity.Developed methodologies to produce content for several products and custom deliverables. Proficient with many healthcare related databases. Interfaced with technical and non-technical staff, and with customers. Facilitated launch of a new claims data warehouse. Designed and implemented production system. Trained analysts in every division. Maintained documentation and size statistics.Expert in mining corporate warehouses for custom studies and national norms. Interfaced with clients to finalize specifications. Reliably met or beat every deadline.

  • Research Scientist

    Jan 2011 - Jan 2016

  • Statistician

    Jan 2002 - Jan 2011

  • Staff Specialist

    Jan 1995 - Jan 2002
• 

  IBM

  Jan 2016 - Jun 2022

  Lead Data Scientist

  Transitioned production environment to Python.Created annual releases of inpatient, outpatient and physician products.Developed methodology to measure inpatient to outpatient shift.Enhanced Reimbursement Benchmarks to increase marketability.Researched effect of Social Determinants of Health on inpatient admissions.

• 

  Merative

  Jul 2022 - now

  Lead Data Scientist