CHIA DATA

CHIA collects detailed financial and patient-level data from Massachusetts payers and providers. Data submissions are normalized to ensure completeness and validity, enabling accurate cross-payer and cross-provider research and analyses.

CHIA's rich data resources are available to state agencies, providers, payers, and health care researchers seeking data for health research in the public interest.

Learn about CHIA's data privacy program

Government Agency APCD Requests

Non-Government Agency APCD Requests

Government Agency Case Mix Requests

Non-Government Agency Case Mix Requests

Information for Data Submitters

USES OF CHIA DATA

Good Government

Many Massachusetts state agencies use CHIA’s data in their work. This streamlined data sharing supports administrative simplification. Notably, the Massachusetts Health Connector uses the MA All-Payer Claims Database to design and implement the state’s risk adjustment program, a requirement of the Affordable Care Act (ACA).

Helping Hospitals

Massachusetts healthcare providers use CHIA’s financial and patient-level data for many purposes, including benchmarking, strategic planning, market analyses and clinical integration initiatives.

Advancing Research

Researchers from leading universities, foundations, public policy think tanks and advocacy groups use CHIA’s data to advance the Triple Aim of reducing costs, improving population health and improving quality.