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The Colorado Health Observation Regional Data Service (CHORDS) is a regional network along the Front Range that uses electronic health record data to support public health evaluation and monitoring efforts.
Published: November 2, 2016 | Updated: January 14, 2020

The numbers are now one click away, whether you are comparing the number of adolescents diagnosed with depression in Frederick or tracking tobacco use in Denver’s Capitol Hill neighborhood.

The Colorado Health Observation Regional Data Service (CHORDS) is a unique regional network of health care, public health, and behavioral health partners that uses electronic health record data to identify health trends and support public health evaluation and monitoring efforts.


Click for Downloadable PDF Maps of Each Health Topic:




Metro area public health and health care experts conceived and created this groundbreaking tool in 2011 to provide location-based information on population health measures in the Metro Denver area. CHORDS expanded to Larimer and Weld counties in 2018.

CHORDS aggregates medical and behavioral health data from 11 contributing providers. The information does not identify patients and does not include protected health records. It is meant to pinpoint pressing health needs in a community and suggest potential responses.

CHORDS partners providing technical support include University of Colorado Denver Adult and Child Consortium for Outcomes Research and Delivery Science (ACCORDS), Colorado Community Managed Care Network (CCMCN), and CORHIO.

Since 2016, the Colorado Health Foundation has provided grant support to the Colorado Health Institute (CHI) to expand the number of public health agencies using CHORDS to include the entire Denver metropolitan area and recruit additional health care and mental health providers to contribute data.


CHORDS data contributors:

Children’s Hospital Colorado, Clinica Family Health, Clinica Tepeyac, Colorado Coalition for the Homeless, Denver Health, High Plains Community Health Center, Jefferson Center for Mental Health, Kaiser Permanente Colorado, Mental Health Center of Denver, STRIDE Community Health Center, and Salud Family Health Centers.

Exploring CHORDS Data

The Colorado Health Observation Regional Data Service (CHORDS) is gathering and aggregating electronic medical record data from health care and mental health providers on the Front Range. For the first time, researchers and public health agencies have access to clinical data to help monitor public health trends. CHORDS data can be used alone or in conjunction with survey data sources.

This dashboard compares the population covered by CHORDS — people who received care at one or more of the participating health providers — with the population included in the American Community Survey. Comparisons are based on 2017 data and are available by county, age, gender and race. Limitations This dashboard compares aggregated data in CHORDS with official population estimates from the American Community Survey (ACS). Individuals represented in CHORDS received care through one of the participating data partners. Currently, individuals who have multiple health care encounters in separate data partner systems during the same year (e.g., a visit at Kaiser Permanente and a visit at Children's Hospital of Colorado during 2015) are counted more than once.

Click the links below for fact sheets about CHORDS coverage by county or region.

How Can I Access Data through CHORDS?

Besides the public data available through interactive and PDF maps, local public health department representatives in the Denver metropolitan area have access to data through CHORDS. Don't see what you're looking for? Please contact the CHORDS public health project manager, Greg Budney (, to learn how data available through CHORDS can support community activities.

Researchers may contact the CHORDS research project manager, Rachel Zucker (, to discuss whether CHORDS can support specific research questions.

Click here to learn how new CHORDS data requests are developed.

Publications and Presentations by CHORDS Partners