NCHS Reports Using Ambulatory Health Care Data
Visit the National Ambulatory Medical Care Survey website at https://www.cdc.gov/nchs/namcs/ and the National Hospital Ambulatory Medical Care Survey at https://www.cdc.gov/nchs/nhamcs/ for more information about these surveys.
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Physician Office Visits
- 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
- 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
Hospital Emergency Department Visits
- 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
- 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
- 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