Ambulatory Health Care Data
The National Ambulatory Medical Care Survey (NAMCS) is a national survey designed to meet the need for objective, reliable information about the provision and use of ambulatory medical care services in the United States. Findings are based on a sample of visits to non-federal employed office-based physicians who are primarily engaged in direct patient care.
The National Hospital Ambulatory Medical Care Survey (NHAMCS) is designed to collect data on the utilization and provision of ambulatory care services in hospital emergency and outpatient departments. Findings are based on a national sample of visits to the emergency departments and outpatient departments of noninstitutional general and short-stay hospitals.
Did You Know?
- 2014 NAMCS public use data file (3/2017)
- 2010 NHAMCS Ambulatory Surgery (AS) public use data file (1/2017)
- 2013 NHAMCS Emergency Department summary tables [PDF - 521 KB] (12/2016)
- 2013 NAMCS summary tables [PDF - 926 KB] (11/2016)
- 2013 NHAMCS Emergency Department public-use data file (10/2016)
- 2012 NHAMCS Emergency Department summary tables [PDF - 647 KB] (10/2016)
- State Variation in Electronic Sharing of Information in Physician Offices: United States, 2015 (10/2016)
- Data from the 2015 National Electronic Health Records Survey are now available for use in the NCHS Research Data Center. (7/2016)
- 2013 NAMCS public-use data file (7/2016)
- Ambulatory Surgery Data From Hospitals and Ambulatory Surgery Centers: United States, 2010 [PDF – 471 KB] (2/2017)
- Emergency Department Visits for Injury and Illness Among Adults Aged 65 and Over: United States, 2012–2013 (2/2017)
- Characteristics of Primary Care Physicians in Patient-centered Medical Home Practices: United States, 2013 [PDF - 301 KB] (2/2017)
- Physician Office Visits for Attention-deficit/Hyperactivity Disorder in Children and Adolescents Aged 4–17 Years: United States, 2012–2013 (1/2017)
- Age Differences in Visits to Office-based Physicians by Adults With Hypertension: United States, 2013 (11/2016)
- Expected Source of Payment at Emergency Department Visits for Adults Aged 18–64 for the United States and in the Five Most Populous States, 2012 (6/2016)
- Emergency Department Use in the Country’s Five Most Populous States and the Total United States, 2012 (6/2016)
- Physician Office Visits by Children for Well and Problem-focused Care: United States, 2012 (5/2016)
- Page last reviewed: July 29, 2016
- Page last updated: July 29, 2016
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