David Berry enhanced the CMSgov/qpp-measures-data repository by expanding MVP measures for PY2025, adding new episode-based CKD cost measures, and refining cost data to improve reporting accuracy. He updated TypeScript interfaces, CSV data files, and YAML configurations to support evolving healthcare analytics requirements, while also removing deprecated measure IDs to maintain data integrity. In the CMSgov/qpp-conversion-tool repository, David focused on security and build reliability by upgrading Spring Security and Maven build plugins. His work demonstrated depth in API development, configuration management, and build tooling, ensuring both the robustness and maintainability of critical healthcare data processing systems.