Sources and methods

About the data

This site makes the New York State Department of Health's public inspection records for Nassau County food service establishments searchable by place.

Sources

• Food Service Establishment Inspections: Beginning 2005 (dataset 2hcc-shji), for active establishments.
• Food Service Establishment Inspections, Inactive Establishments: Beginning 2005 (dataset aaxz-j6pj), for closed and inactive establishments.
• Food Service Establishment: Last Inspection (dataset cnih-y5dw), used only to fill in details for matching active establishments.

All three are published by NYS DOH on health.data.ny.gov and were downloaded on November 9 and 12, 2026. The records run from January 2001 through November 6, 2026. Records before 2008 are sparse.

How to read it

• One source row is one violation, not one visit. We grouped rows into inspections by establishment, date and inspection type, and counted each inspection's violation totals once.
• Critical violations are those NYS DOH classifies as critical, meaning they are more likely to contribute to foodborne illness. Inspectors often record that these were corrected during the visit.
• Letter grades are not an official field. NYS DOH says this data was not collected as a grading system. Where an inspector's comments say something like "Grade A", we show that letter. A missing grade means none was written in the comments. It does not mean the place was ungraded or did poorly.
• Not only restaurants. The records cover every permitted food service operation, including delis, bakeries, caterers, school cafeterias, day care kitchens, camps and other institutions.
• Closed places are included. Closed establishments come from the inactive dataset. A new permit at the same address or facility code shows up under "Same location history". That can mean an ownership or name change, or a second kitchen at a school, hotel or venue.
• Map locations come from coordinates in the source data where present. Otherwise they come from another record at the same address, or from a public address locator. A small number of places could not be placed. They can still be found by search.
• "Last 3 years" means inspections on or after November 9, 2023.

Disclaimer

This site republishes public government records as provided. The records may contain errors or omissions. An inspection is a snapshot of conditions on one day and does not describe how a place operates today. Do not use this site as the sole basis for any decision about a business. For official information, contact the Nassau County Department of Health or see the NYS DOH datasets linked above.

Source code

The scripts that build this site from the raw data are in the GitHub repository.