Nathaniel Haines

Nathaniel Haines

Senior Manager, Data Science

Oscar Health

Biography

I am a data scientist with a PhD from The Ohio State University, specializing in generative modeling, behavioral economics, and software development. My work spans both health-tech and fin-/insur-tech, where I’ve led teams to:

  1. develop and deploy generative/ML models for web and mobile platforms;
  2. design studies and publish academic research across fields including behavioral and actuarial science; and
  3. build internal and open-source tools to help make doing day-to-day analytics work a more delightful—and less error prone—experience.

With 20+ peer-reviewed publications and contributions to open-source software, I can be academic when rigor is needed, but also practical when it comes to tight deadlines and execution uncertainty.

TLDR; I have expertise in leading teams and building analytics tools across diverse industries. My skillset allows for me to make informed decisions even when faced with incomplete or uncertain data. I also really enjoy the work I do—reach out if you are ever interested in chatting about it!

Download my CV.

Interests
  • Bayesian Statistics <3
  • Risk Modeling
  • Computational Reproducibility
  • Uncertainty Quantification and Visualization
  • Clinical and Mathematical Psychology
Education
  • Ph.D. in Psychology, 2021

    The Ohio State University

  • M.A. in Psychology, 2017

    The Ohio State University

  • B.A. in Psychology, 2015

    The Ohio State University

Skills

Python
R
Bayesian Statistics
Computational Modeling
ML-Ops
Psychology

Experience

 
 
 
 
 
Oscar Health
Senior Manager, Data Science
Jul 2025 – Present Remote / Ohio

Responsibilities include:

  • Lead data science initiatives for Clinical Risk Adjustment
  • Provide analytical support for actuarial and executive stakeholders
  • Build tools and infrastructure to support data-driven decision making
 
 
 
 
 
Ledger Investing
Manager, Data Science Research
Oct 2023 – Jul 2025 Remote / Ohio

Responsibilities include:

  • Lead and mentor a team of data scientists. My team specializes in Bayesian modeling, time series forecasting, and risk/uncertainty quantification
  • Develop and implement data science research strategies that align with organizational goals and drive innovation in the field, including Bayesian model development, model comparison, and model stacking
  • Oversee the end-to-end lifecycle of data science research projects from research and development to model deployment
 
 
 
 
 
Ledger Investing
Senior Data Scientist
Oct 2022 – Oct 2023 Remote / Ohio

Responsibilities include:

  • Develop Bayesian forecasting, pricing, and cashflow models
  • Research novel methods for robust Bayesian model comparison
  • Build semi-automated reports for executive decision-making
  • Design internal software to improve model development and deployment
 
 
 
 
 
Aivo Health
Data Scientist
Sep 2021 – Oct 2022 Remote / Ohio

Responsibilities include:

  • Developed theoretical models of chronic pain
  • Built real-time data pipelines for in-app experience
  • Deployed models for real-time inference
  • Designed research studies and writing papers
 
 
 
 
 
The Ohio State University
Graduate Student Researcher
Aug 2016 – Jul 2021 Ohio

During my PhD., I:

  • Received the Presidential Fellowship for my dissertation research
  • Was instructor of record for 4 semesters of Abnormal Psychology
  • Trained in and conducted 400+ hours of cognitive behavioral therapy, motivational interviewing, acceptance and commitment therapy, and mindfulness based relapse prevention
  • Published my research in journals including Computational Psychiatry, Cognitive Science, Clinical Psychological Science, and Drug and Alcohol Dependence

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Recent Publications

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