Health Data Agent

The Health Data Agent is a healthcare AI project focused on clinical intelligence, interoperability, and AI governance for sensitive healthcare data. It combines practical AI engineering with PHI-safe controls that make clinical workflows easier to review, audit, and trust.

The Warden

AI governance and security controls for PHI-safe workflows, request guardrails, and audit-aware clinical AI access.

Process Data

Ingest legacy HL7 v2 messages and convert them to FHIR R4, using AI to analyze clinical notes and extract key insights.

Dashboard & Chat

A practical AI interface for asking patient-data questions, reviewing insights, and exploring clinical risk signals.

Governance & Security Focus

The Warden is the core security and governance layer: it keeps PHI out of model exposure, applies request-level guardrails, and records audit-aware governance events. The broader system is built with Python/FastAPI, AWS Bedrock, typed Pydantic validation, HL7/FHIR workflows, and ChromaDB for semantic memory.

About the Creator

Hi, I'm Bradly Cheng, a software developer and AI engineer focused on AI governance, healthcare data security, interoperability, and practical clinical AI systems.

I built Health Data Agent to show that useful AI is only half the problem in healthcare. The harder question is how to make AI access controlled, PHI-safe, auditable, and aligned with real clinical data workflows.

My strongest interest is the Warden side of the project: AI security, request guardrails, HIPAA-aware governance, and systems that let organizations use LLMs without treating sensitive data casually. I still build the AI applications themselves, but I am especially interested in making them safe enough to operate in regulated environments.

Portfolio Showcase

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Game built using Godot Engine. Evade the enemies and capture the flag.

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A custom website I built for a dogsitting service.

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