Ambulatory Health Care Data
The National Ambulatory Medical Care Survey (NAMCS) is 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 nonfederally employed office-based physicians who are primarily engaged in direct patient care and, starting in 2006, a separate sample of visits to community health centers.
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 and ambulatory surgery locations. Findings are based on a national sample of visits to the emergency departments, outpatient departments, and ambulatory surgery locations of noninstitutional general and short-stay hospitals.
The National Health Care Surveys (including NAMCS, NHAMCS, and NHCS) are working with the Centers for Medicare and Medicaid Services Electronic Health Record Incentive Programs: Promoting Interoperability (PI) (formerly known as Meaningful Use (MU)) and the Merit-based Incentive Payment System (MIPS). Click here to find out more.
- 2016 NAMCS Supplement on Culturally and Linguistically Appropriate Services public use file (11/2018)
- 2016 NHAMCS Emergency Department public use data file (11/2018)
- 2015 NHAMCS Emergency Department summary tables [PDF – 676 KB] (3/2018)
- 2015 NHAMCS Emergency Department public use data file (11/2017)
- NAMCS – Community Health Centers Summary Tables [PDF – 555 KB] (10/2017)
- 2015 NAMCS summary tables [PDF – 693 KB] (10/2017)
- National Hospital Care Survey Demonstration Projects: Characteristics of Inpatient and Emergency Department Encounters Among Patients With Any Listed Diagnosis of Alzheimer Disease [PDF – 458 KB] (12/10/2018)
- Evaluation of Transition From ICD–9–CM to ICD–10–CM Diagnosis Coding System in the National Ambulatory Medical Care Survey [PDF – 449 KB] (11/26/2018)
- National Hospital Care Survey Demonstration Projects: Pneumonia Inpatient Hospitalizations and Emergency Department Visits [PDF – 380 KB] (8/2018)
- Patient Health Information Shared Electronically by Office-based Physicians: United States, 2015 [PDF – 377 KB] (8/2018)
- Identification of Substance-involved Emergency Department Visits Using Data From the National Hospital Care Survey [PDF – 418 KB] (8/2018)
- Mental Health-related Physician Office Visits by Adults Aged 18 and Over: United States, 2012–2014 (6/2018)
- Characteristics of Office-based Physician Visits, 2015 (6/2018)
- Emergency Department Visits by Patients Aged 45 and Over With Diabetes: United States, 2015 (2/2018)
- Page last reviewed: December 10, 2018
- Page last updated: December 10, 2018
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