
NCHS Reports Using Ambulatory Health Care Data
Below are recent NCHS reports using data from NAMCS and NHAMCS, but many older reports are not shown. For a list of all NAMCS and NHAMCS titles, see NAMCS/NHAMCS Publications List [PDF – 424 KB]. To access downloadable versions of all reports, go to Search for NCHS Publications.
Physician Office Visits
- Experiences Related to the COVID-19 Pandemic Among U.S. Physicians in Office-based Settings, 2020–2021 [PDF – 305 KB]
National Health Statistics Report No. 175 - Characteristics of Office-based Physician Visits, 2018
Data Brief No. 408 - Urban-rural Differences in Visits to Office-based Physicians by Adults With Hypertension: United States, 2014–2016 [PDF – 276 KB]
National Health Statistics Report No. 147 - Physician Office Visits at Which Benzodiazepines Were Prescribed: Findings From 2014–2016 National Ambulatory Medical Care Survey [PDF – 376 KB]
National Health Statistics Report No. 137 - Characteristics of Asthma Visits to Physician Offices in the United States: 2012–2015 National Ambulatory Medical Care Survey [PDF – 876 KB]
National Health Statistics Report No. 128 - Characteristics of Office-based Physician Visits, 2016
Data Brief No. 331 - Patient Health Information Shared Electronically by Office-based Physicians: United States, 2015 [PDF – 377 KB]
National Health Statistics Reports No. 115 - Mental Health-related Physician Office Visits by Adults Aged 18 and Over: United States, 2012–2014
Data Brief No. 311 - Characteristics of Office-based Physician Visits, 2015
Data Brief No. 310 - Characteristics of Office-based Physician Visits, 2014
Data Brief No. 292 - Collecting Practice-level Data in a Changing Physician Office-based Ambulatory Care Environment: A Pilot Study Examining the Physician Induction Interview Component of the National Ambulatory Medical Care Survey [PDF – 3 MB]
Vital and Health Statistics Series Report No. 176 - Characteristics of Visits to Primary Care Physicians by Adults Diagnosed With Hypertension [PDF – 576 KB]
National Health Statistics Report No. 106 - Characteristics of Primary Care Physicians in Patient-centered Medical Home Practices: United States, 2013 [PDF – 301 KB]
National Health Statistics Report No. 101 - Physician Office Visits for Attention-deficit/Hyperactivity Disorder in Children and Adolescents Aged 4–17 Years: United States, 2012–2013
Data Brief No. 269 - Age Differences in Visits to Office-based Physicians by Adults With Hypertension: United States, 2013
Data Brief No. 263 - Characteristics of Physician Office Visits for Obesity by Adults Aged 20 and Over: United States, 2012
Data Brief No. 237 - Variation in Physician Office Visit Rates by Patient Characteristics and State, 2012
Data Brief No. 212 - Acceptance of New Patients With Public and Private Insurance by Office-based Physicians: United States, 2013
Data Brief No. 195 - Age Differences in Visits to Office-based Physicians by Patients With Diabetes: United States, 2010
Data Brief No. 161 - Generalist and Specialty Physicians: Supply and Access, 2009–2010
Data Brief No. 105 - Liquid-based Cytology Test Use by Office-based Physicians: United States, 2006-2007 [PDF – 113 KB]
National Health Statistics Report No. 40 - Nurse Practitioners, Certified Nurse Midwives, and Physician Assistants in Physician Offices
Data Brief No. 69 - Visits to Primary Care Delivery Sites: United States, 2008
Data Brief No. 47 - Population Aging and the Use of Office-based Physician Services
Data Brief No. 41 - National Ambulatory Medical Care Survey:
- 2007 Summary [PDF – 702 KB]
National Health Statistics Report No. 27 - 2006 Summary [PDF – 855 KB]
National Health Statistics Report No. 3 - 2005 Summary [PDF – 867 KB]
Advance Data No. 387 - 2004 Summary [PDF – 932 KB]
Advance Data No. 374 - 2003 Summary [PDF – 1.5 MB]
Advance Data No. 365 - 2002 Summary [PDF – 1 MB]
Advance Data No. 346 - 2001 Summary [PDF – 1.7 MB]
Advance Data No. 337 - 2000 Summary [PDF – 1.2 MB]
Advance Data No. 328 - 1999 Summary [PDF – 1.3 MB]
Advance Data No. 322 - 1998 Summary [PDF – 250 KB]
Advance Data No. 315 - 1997 Summary [PDF – 468 KB]
Advance Data No. 305 - 1996 Summary [PDF – 533 KB]
Advance Data No. 295 - 1995 Summary [PDF – 317 KB]
Advance Data No. 286 - 1994 Summary [PDF – 2.2 MB]
Advance Data No. 273 - 1993 Summary [PDF – 2.4 MB]
Advance Data No. 270 - 1992 Summary [PDF – 2.3 MB]
Advance Data No. 253 - 1991 Summary [PDF – 2.2 MB]
Advance Data No. 230
- 2007 Summary [PDF – 702 KB]
- Office Visits to Orthopedic Surgeons: United States, 1995-96 [PDF – 668 KB]
Advance Data No. 302
Community Health Center Visits
- Community Health Centers: Providers, Patients, and Content of Care
Data Brief No. 65
Hospital Outpatient Department Visits
- National Hospital Ambulatory Medical Care Survey:
- Physician Assistant and Advance Practice Nurse Care in Hospital Outpatient Departments: United States, 2008-2009.
Data Brief No. 77 - Visits to Primary Care Delivery Sites: United States, 2008
Data Brief No. 47 - 2007 Outpatient Department Summary [PDF – 609 KB]
National Health Statistics Report No. 28 - 2006 Outpatient Department Summary [PDF – 616 KB]
National Health Statistics Report No. 4 - 2005 Outpatient Department Summary [PDF – 675 KB]
Advance Data No. 389 - 2004 Outpatient Department Summary [PDF – 1.1 MB]
Advance Data No. 373 - 2003 Outpatient Department Summary [PDF – 1.1 MB]
Advance Data No. 366 - 2002 Outpatient Department Summary [PDF – 1 MB]
Advance Data No. 345 - 2001 Outpatient Department Summary [PDF – 1.3 MB]
Advance Data No. 338 - 2000 Outpatient Department Summary [PDF – 1 MB]
Advance Data No. 327 - 1999 Outpatient Department Summary [PDF – 1.4 MB]
Advance Data No. 321 - 1998 Outpatient Department Summary [PDF – 227 KB]
Advance Data No. 317 - 1997 Outpatient Department Summary [PDF – 317 KB]
Advance Data No. 307 - 1996 Outpatient Department Summary [PDF – 362 KB]
Advance Data No. 294 - 1995 Outpatient Department Summary [PDF – 598 KB]
Advance Data No. 284 - 1994 Outpatient Department Summary [PDF – 205 KB]
Advance Data No. 276 - 1993 Outpatient Department Summary [PDF – 200 KB]
Advance Data No. 268 - 1992 Outpatient Department Summary [PDF – 1.3 MB]
Advance Data No. 248
- Physician Assistant and Advance Practice Nurse Care in Hospital Outpatient Departments: United States, 2008-2009.
Hospital Emergency Department Visits
- Emergency Department Visits Among Children Aged 0–17 by Selected Characteristics: United States, 2019–2020 (6/6/2023)
- Emergency Department Visits with Suicidal Ideation: United States, 2016–2020 (4/13/2023)
Data Brief No. 463 - Emergency Department Visits Related to Mental Health Disorders Among Adults, by Race and Hispanic Ethnicity: United States, 2018–2020 [PDF – 387 KB]
National Health Statistics Reports No. 181 - Opioids Prescribed to Adults at Discharge from Emergency Departments: United States, 2017–2020
Data Brief No. 461 - Emergency Department Visit Rates by Selected Characteristics: United States, 2020
Data Brief No. 452 - Emergency Department Visits by Adults With Chronic Conditions Associated With Severe COVID-19 Illness: United States, 2017–2019 [PDF – 1,013 KB]
National Health Statistics Reports No. 174 - Emergency Department Visit Rates by Selected Characteristics: United States, 2019
Data Brief No. 434 - Emergency Department Visits Among Adults With Mental Health Disorders: United States, 2017–2019
Data Brief No. 426 - National Hospital Care Survey Demonstration Projects: Severe Maternal Morbidity in Inpatient and Emergency Departments [PDF – 298 KB]
National Health Statistics Reports No. 166 - Emergency Department Visit Rates for Motor Vehicle Crashes by Selected Characteristics: United States, 2017–2018
Data Brief No. 410 - Emergency Department Visits for Influenza and Pneumonia: United States, 2016–2018
Data Brief No. 402 - Emergency Department Visit Rates by Selected Characteristics: United States, 2018
Data Brief No. 401 - Respiratory Illness Emergency Department Visits in the National Hospital Care Survey and the National Hospital Ambulatory Medical Care Survey [PDF – 993 KB]
National Health Statistics Reports No. 151 - Opioid-involved Emergency Department Visits in the National Hospital Care Survey and the National Hospital Ambulatory Medical Care Survey [PDF – 402 KB]
National Health Statistics Reports No. 149 - Emergency Department Visits Among Adults Aged 60 and Over: United States, 2014–2017
Data Brief No. 367 - Trends in Opioids Prescribed at Discharge From Emergency Departments Among Adults: United States, 2006–2017 [PDF – 437 KB]
National Health Statistics Reports No. 135 - Emergency Department Visits for Injuries Sustained During Sports and Recreational Activities by Patients Aged 5–24 Years, 2010–2016 [PDF – 961 KB]
National Health Statistics Reports No. 133 - Opioids Prescribed at Discharge or Given During Emergency Department Visits Among Adults in the United States, 2016
Data Brief No. 338 - 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]
National Health Statistics Reports No. 121 - Emergency Department Visits by Patients Aged 45 and Over With Diabetes: United States, 2015
Data Brief No. 301 - Emergency Department Visits for Injury and Illness Among Adults Aged 65 and Over: United States, 2012–2013
Data Brief No. 272 - 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
Data Brief No. 253 - Emergency Department Use in the Country’s Five Most Populous States and the Total United States, 2012
Data Brief No. 252 - Emergency Department Visits Related to Schizophrenia Among Adults Aged 18–64: United States, 2009–2011
Data Brief No. 215 - Emergency Department Visits for Drug Poisoning: United States, 2008–2011
Data Brief No. 196 - Trends in Emergency Department Visits for Ischemic Stroke and Transient Ischemic Attack: United States, 2001–2011
Data Brief No. 194 - Emergency Department Visits and Proximity to Patients’ Residences, 2009–2010
Data Brief No. 192 - Emergency Department Visits for Motor Vehicle Traffic Injuries: United States, 2010–2011
Data Brief No. 185 - Injury-related Emergency Department Visits by Children and Adolescents: United States, 2009–2010
Data Brief No. 150 - Emergency Department Visits by Persons Aged 65 and Over: United States, 2009–2010
Data Brief No. 130 - Wait Time for Treatment in Hospital Emergency Departments: 2009
Data Brief No. 102 - Blood Pressure Measurements at Emergency Department Visits by Adults: United States, 2007–2008
Data Brief No. 72 - Emergency Department Visits for Chest Pain and Abdominal Pain: United States, 1999-2008
Data Brief No. 43 - Emergency Department Visitors and Visits: Who Used the Emergency Room in 2007?
Data Brief No. 38 - Emergency Department Visits by Persons Recently Discharged from U.S. Hospitals [PDF – 150 KB]
National Health Statistics Report No. 6 - National Hospital Ambulatory Medical Care Survey:
- 2007 Emergency Department Summary [PDF – 624 KB]
National Health Statistics Report No. 26 - 2006 Emergency Department Summary [PDF – 696 KB]
National Health Statistics Report No. 7 - 2005 Emergency Department Summary [PDF – 612 KB]
Advance Data No. 386 - 2004 Emergency Department Summary [PDF – 998 KB]
Advance Data No. 372 - 2003 Emergency Department Summary [PDF – 871 KB]
Advance Data No. 358 - 2002 Emergency Department Summary [PDF – 1 MB]
Advance Data No. 340 - 2001 Emergency Department Summary [PDF – 1.4 MB]
Advance Data No. 335 - 2000 Emergency Department Summary [PDF – 1.2 MB]
Advance Data No. 326 - 1999 Emergency Department Summary [PDF – 1.1 MB]
Advance Data No. 320 - 1998 Emergency Department Summary [PDF – 259 KB]
Advance Data No. 313 - 1997 Emergency Department Summary [PDF – 647 KB]
Advance Data No. 304 - 1996 Emergency Department Summary [PDF – 391 KB]
Advance Data No. 293 - 1995 Emergency Department Summary [PDF – 654 KB]
Advance Data No. 285 - 1994 Emergency Department Summary [PDF – 220 KB]
Advance Data No. 275 - 1993 Emergency Department Summary [PDF – 181 KB]
Advance Data No. 271 - 1992 Emergency Department Summary [PDF – 166 KB]
Advance Data No. 245
- 2007 Emergency Department Summary [PDF – 624 KB]
- Characteristics of Emergency Departments Serving High Volumes of Safety Net Patients: United States, 2000 [PDF – 4 MB]
Series 13, No. 155 - Trends in Hospital Emergency Department Utilization: United States, 1992-99 [PDF – 1.9 MB]
Series 13, No. 150 - Alcohol-and-Drug-Related Visits to Hospital Emergency Departments: 1992 National Hospital Ambulatory Medical Care Survey [PDF – 1.9 MB]
Advance Data No. 251
Medication Therapy
- Medication Therapy in Ambulatory Medical Care: United States, 2003-04 [PDF – 1.2 MB]
Series 13, No. 163 - Medication Therapy in Ambulatory Medical Care: National Ambulatory Medical Care Survey and National Hospital Ambulatory Medical Care Survey: 1992 [PDF – 391 KB]
Advance Data No. 290 - Drug Utilization in Office Practice: 1990 [PDF – 1.5 MB]
Advance Data No. 232 - Utilization of Controlled Drugs in Ambulatory Care: 1985 [PDF – 1 MB]
Advance Data No. 177 - Highlights of Drug Utilization in Office Practice: 1985 [PDF – 1.3 MB]
Advance Data No. 134
Combined Reports
- Ambulatory Surgery Data From Hospitals and Ambulatory Surgery Centers: United States, 2010 [PDF – 471 KB]
National Health Statistics Report No. 102 - Ambulatory Medical Care Utilization Estimates for 2007 [PDF – 797 KB]
Series 13, No. 169 - Health Care Utilization Among Adults Aged 55-64 Years: How Has It Changed Over the Past 10 Years?
Data Brief No. 32 - Ambulatory Medical Care Utilization Estimates for 2006 [PDF – 624 KB]
National Health Statistics Report No. 8 - Ambulatory Medical Care Utilization Estimates for 2005 [PDF – 284 KB]
Advance Data No. 388 - Ambulatory Care Visits to Physician Offices, Hospital Outpatient Departments, and Emergency Departments: United States, 2001-02 [PDF – 3.9 MB]
Series 13, No. 159 - Ambulatory Care Visits to Physician Offices, Hospital Outpatient Departments, and Emergency Departments: United States, 1999-2000 [PDF – 3.7 MB]
Series 13, No. 157 - Utilization of Ambulatory Medical Care by Women: United States, 1997-98 [PDF – 1.7 MB]
Series 13, No. 149 - Ambulatory Care Visits to Physician Offices, Hospital Outpatient Departments, and Emergency Departments: United States, 1997 [PDF – 778 KB]
Series 13, No. 143 - Ambulatory Health Care Visits by Children: Principal Diagnosis and Place of Visit [PDF – 402 KB]
Series 13, No. 137 - Ambulatory Care Visits to Physician Offices, Hospital Outpatient Departments, and Emergency Departments: United States, 1996 [PDF – 846 KB]
Series 13, No. 134 - Ambulatory Care Visits to Physician Offices, Hospital Outpatient Departments, and Emergency Departments: United States, 1995 [PDF – 599 KB]
Series 13, No. 129
Injury Visits
- Emergency Department Visits and Proximity to Patients’ Residences, 2009–2010
Data Brief No. 192 - Injury-related Emergency Department Visits by Children and Adolescents: United States, 2009–2010
Data Brief No. 150 - Injury-related Visits to Hospital Emergency Departments: United States: 1992 [PDF – 2.2 MB]
Advance Data No. 261 - Injury Visits to Hospital Emergency Departments: United States [PDF – 1.6 MB]
Series 13, No. 131
Use of Electronic Medical Record/Electronic Health Record (EMR/EHR) Systems
- State Variation in Electronic Sharing of Information in Physician Offices: United States, 2015
Data Brief No. 261 - Progress With Electronic Health Record Adoption Among Emergency and Outpatient Departments: United States, 2006–2011
Data Brief No. 187 - Trends in Electronic Health Record System Use Among Office-based Physicians: United States, 2007–2012 [PDF – 350 KB]
National Health Statistics Report No. 75 - Use and Characteristics of Electronic Health Record Systems Among Office-based Physician Practices: United States, 2001–2013 Data Brief No. 143
- Physician Experience With Electronic Health Record Systems That Meet Meaningful Use Criteria: NAMCS Physician Workflow Survey, 2011 Data Brief No. 129
- Use and Characteristics of Electronic Health Record Systems Among Office-based Physician Practices: United States, 2001-2012 Data Brief No. 111
- Physician Adoption of Electronic Health Record Systems: United States, 2011 Data Brief No. 98
- Electronic Health Record Systems and Intent to Apply for Meaningful Use Incentives Among Office-based Physician Practices: United States, 2001–2011
Data Brief No. 79 - Electronic Medical Record/Electronic Health Record Systems of Office-based Physicians: United States, 2009 and Preliminary 2010 State Estimates
Health E-Stat - Electronic Medical Record Use by Office-based Physicians and Their Practices: United States, 2007 [PDF – 185 KB]
National Health Statistics Report No. 23 - Use of Electronic Medical Records by Ambulatory Care Providers: United States, 2006 [PDF – 308 KB]
National Health Statistics Report No. 22 - Electronic Medical Record/Electronic Health Record Use by Office-based Physicians: United States, 2008 and Preliminary 2009
Health E-Stat - Preliminary Estimates of Electronic Medical Record Use by Office-based Physicians: United States, 2008
Health E-Stat - Electronic Medical Record Use by Office-Based Physicians and Their Practices: United States, 2006 [PDF – 192 KB]
Advance Data No. 393 - Use of Computerized Clinical Support Systems in Medical Settings: United States, 2001-2003 [PDF – 134 KB]
Advance Data No. 353
Other Provider Characteristics
- Characteristics of Visits to Health Centers: United States, 2020
Data Brief No. 438 - Machine Learning for Medical Coding in Healthcare Surveys [PDF – 949 KB]
- Enhancing Identification of Opioid-involved Health Outcomes Using National Hospital Care Survey Data [PDF – 972 KB]
- National Hospital Care Survey Demonstration Projects: Stroke Inpatient Hospitalizations [PDF – 919 KB]
National Health Statistics Reports No. 132 - Evaluation of Transition From ICD–9–CM to ICD–10–CM Diagnosis Coding System in the National Ambulatory Medical Care Survey [PDF – 449 KB]
National Health Statistics Reports No. 120 - Nonresponse Bias in Estimates from the 2012 National Ambulatory Medical Care Survey [PDF – 3.4 MB]
Series 2, No. 171 - State Variation in Preventive Care Visits, by Patient Characteristics, 2012 Data Brief No. 234
- State Variability in Supply of Office-based Primary Care Providers: United States, 2012
Data Brief No. 151 - Availability of Pediatric Services and Equipment in Emergency Departments: United States, 2006 [PDF – 837 KB]
National Health Statistics Report No. 47 - Role of International Medical Graduates Providing Office-based Medical Care: United States, 2005-2006
Data Brief No. 13 - Characteristics of Office-Based Physicians and Their Practices: United States, 2005-2006 [PDF – 588 KB]
Series 13, No. 166 - Emergency Response Planning in Hospitals, United States: 2003-2004 [PDF – 195 KB]
Advance Data No. 391 - National Ambulatory Medical Care Survey: Terrorism Preparedness Among Office-Based Medical Physicians: United States, 2003-2004 [PDF – 288 KB]
Advance Data No. 390 - Office-based Medical Practices: Methods and Estimates from the National Ambulatory Medical Care Survey: United States, 2007 [PDF – 392 KB]
Advance Data No. 383 - Characteristics of Office-Based Physicians and Their Practices: United States, 2003-04 [PDF – 956 KB]
Series 13, No. 164 - Training for Terrorism-Related Conditions in Hospitals: United States, 2003-04 [PDF – 256 KB]
Advance Data No. 380 - Staffing, Capacity, and Ambulance Diversion in Emergency Departments: United States, 2003-04 [PDF – 1.2 MB]
Advance Data No. 376 - Availability of Pediatric Services and Equipment in Emergency Departments: United States, 2002-03 [PDF – 721 KB]
Advance Data No. 367 - Bioterrorism and Mass Casualty Preparedness in Hospitals: United States: 2003 [PDF – 866 KB]
Advance Data No. 364