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Richard Arnold

Richard Arnold

Data Scientist

MS Mathematics | Spokane, WA


My Portfolio Highlights

My New Course

Introduction to Python

My New Project

Introduction to DataCamp Projects

My New Track

SQL Fundamentals

Data ambassador, bridging the gap between numbers and human understanding.

My Work

Take a look at my latest work.


Course Notes: Cluster Analysis in Python


Course Notes: Supervised Learning with scikit-learn


Unsupervised Learning in Python

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

My Work Experience

Where I've interned and worked during my career.

UnitedHealth Group | Jul 2017 - Present

Sr. Data Scientist at Optum (Commercial Data Science team, Payment Integrity Decision Intelligence)

• Leader on the team with key experience and knowledge to manage various ideation, modeling, and analysis projects mostly in support of the team’s flagship commercial product which produces over $126M in annual revenue • Implementing a streamlined end-to-end process for new client implementations, automating EDA, creating detailed workflow documentation, debugging inherited code bases, and shortening development timeline • Improving client relations and reducing provider abrasion • Innovating over an existing, in-production Classifier, improving labels, incorporating savings thresholds, leading to a lift in both precision and attributed savings • Bayesian Modeling with PyMC3 to engineer a more probabilistic model feature using Markov chain Monte Carlo sampling, and demonstrating increased performance, improved generalization, and more explainable results • Developing and engineering a data-driven approach to monitoring the stages of batch processing, enhancing understanding of causes for variance in attributed savings, and enabling more accurate performance metrics • Collaborating with a prominent genetics lab client, exploring use of Genetic Testing Registry (GTR) IDs to identify unique genetic tests (incl. target genes), methodology, and condition and identifying over $6M (>25% of annual spend) in estimated annual savings, and over $100M if extrapolated to all client- contracted labs • Mentoring and helping to train two new data scientists in new client product implementation • Presenting to department on topics of Trust and Compassion as a UHG Culture Ambassador
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UnitedHealth Group | Jul 2015 - Jul 2017

Sr. Business Analyst at Optum (Fraud Analytics team, Advanced Analytics Lab)

• Managed various data mining and analysis projects • Researched and identified medical billing abnormalities, questionable billing practices, and irregularities • Created algorithms for outlier and FWAE detection for both institutional and professional medical claims • Successfully led the transition of a cross-functional team analytic into production worth an estimated $6M annually • Created and piloted delivery of first institutional (DRG) peer analysis into production worth an estimated $400K annually

UnitedHealth Group | Nov 2011 - Jul 2015

Network Pricing Consultant, United Healthcare

• Managed ~$500M in total market spend managed for primary market • Executed financial impact and network pricing (contract valuation) models • Conducted claims, data, utilization/spend, and unit cost analysis • Analyzed unit cost management strategies and performance reporting against prescribed budgets and market targets • Presented analysis results to Provider Network (internal client) supporting network contracting negotiations with hospitals, physicians, and ancillary providers

CBIZ Benefits & Insurance Services, Inc | Jan 2009 - Nov 2011

Actuarial Consultant


CBIZ Benefits & Insurance Services, Inc | Jul 2008 - Dec 2008

Actuarial Intern


My Education

Take a look at my formal education

Master of Science (MS), Applied Mathematics - Statistics ConcentrationCleveland State University | 2014
Mathematics, Applied Mathematics, Finance, EconomicsCleveland State University | 2008

About Me

Richard Arnold

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