2021 NAMCS Questionnaires, Datasets, and Documentation

Overview

Resources on this page provide information about the 2021 National Ambulatory Medical Care Survey (NAMCS) data collection, its participants, and its protocols, as well as analytic notes and references. They will help you understand, analyze, and use the 2021 NAMCS data.

Access to 2021 NAMCS data files is restricted. Researchers can access these files through the National Center for Health Statistics Research Data Center.

Health Center Component

Restricted data

• Data dictionary

Office-based physician data

During the 2021 NAMCS office-based physician data collection periods, only physician-level data were collected using the Physician Induction Interview. NAMCS did not collect data about patient visits from office-based physicians in 2021.

Restricted data

• Data dictionary

COVID-19

Questions about COVID-19 were included in the 2021 physician induction interview in all periods (1–4). Periods 1–2 ran July 27, 2021–December 15, 2021. Periods 3–4 ran December 16, 2021–May 6, 2022.

Two smaller restricted data files for periods 1–2 and periods 3–4 are available through the NCHS Research Data Center. These files allow researchers to replicate data from the NAMCS COVID-19 Dashboards.

• Periods 1 and 2 data dictionary
• Periods 3 and 4 data dictionary

Survey instruments

• Physician induction interview questions (sample card)

Find more

• NAMCS Questionnaires, Datasets, and Documentation
  • Includes 2023 and 2024 resources
• 2022 NAMCS Questionnaires, Datasets, and Documentation
• 2020 NAMCS Questionnaires, Datasets, and Documentation
• 2019 NAMCS Questionnaires, Datasets, and Documentation
• 2018 NAMCS Questionnaires, Datasets, and Documentation