ONC uses the SK&A Office-based Provider Database to calculate the counts of medical doctors, doctors of osteopathy, nurse practitioners, and physician assistants at the state and count level from 2011 through 2013. These counts are grouped as a total, as well as segmented by each provider type and separately as counts of primary care providers.

The purpose of the National CLAS Physician Survey was to understand the provision of culturally and linguistically appropriate services among office-based physicians. The National CLAS Physician Survey was a supplement to the National Ambulatory Medical Care Survey (NAMCS), which is a national probability sample survey of visits to office-based physicians. NAMCS is a component of the National Health Care Surveys that measured health care utilization across a variety of health care providers’ settings. NAMCS and the National CLAS Physician Survey were conducted by the National Center for Health Statistics (NCHS). The National CLAS Physician Survey public use file includes data from office-based physicians. No patient level data were collected. This documentation describes the public use micro-data file produced from data collected in the National CLAS Physician Survey.

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-federally employed office-based physicians who are primarily engaged in direct patient care. Physicians in the specialties (including designated sub-specialties) of anesthesiology, pathology, and radiology are excluded from the survey. The survey was conducted annually from 1973 to 1981, again in 1985, and annually since 1989.
Data collection from the physician, rather than from the patient, provides an analytic base that expands information on ambulatory care collected through other NCHS surveys. Data about the physician and their practice characteristics are collected during a survey induction interview.
For survey years 1973 to 1991, there are two data files: one for patient visit data and a second for drug mention data. The second file is limited to those visits with mention of medication therapy. For the 1991 data, it is possible to link information on the drug file with information on the patient visit file. Beginning with the 1992 survey year through 2011, one main data file was produced annually that contains both patient visit and drug information.

The purpose of the National CLAS Physician Survey was to understand the provision of culturally and linguistically appropriate services among office-based physicians. The National CLAS Physician Survey was a supplement to the National Ambulatory Medical Care Survey (NAMCS), which is a national probability sample survey of visits to office-based physicians. NAMCS is a component of the National Health Care Surveys that measured health care utilization across a variety of health care providers’ settings. NAMCS and the National CLAS Physician Survey were conducted by the National Center for Health Statistics (NCHS). The National CLAS Physician Survey public use file includes data from office-based physicians. No patient level data were collected. This documentation describes the public use micro-data file produced from data collected in the National CLAS Physician Survey.

The CMS EHR Incentive Programs provide incentives to eligible office-based providers and hospitals to adopt electronic health records. Both the Medicare and Medicaid programs have separate criteria and eligible participants. These measures track the percentage of physicians, nurse practitioners, physician assistants, short-term general, Critical Access, and Children's hospitals that have demonstrated meaningul use of certified electronic health record technology and/or adopted, implemented, or ugraded any electronic health record. These measures track the rate of adoption and use of EHR technology certified by HHS in addition to adoption of other non-certified EHR technology. These measures are cumulative, representing the most recent 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-federally employed office-based physicians who are primarily engaged in direct patient care. Physicians in the specialties (including designated sub-specialties) of anesthesiology, pathology, and radiology are excluded from the survey. The survey was conducted annually from 1973 to 1981, again in 1985, and annually since 1989.
Data collection from the physician, rather than from the patient, provides an analytic base that expands information on ambulatory care collected through other NCHS surveys. Data about the physician and their practice characteristics are collected during a survey induction interview.
For survey years 1973 to 1991, there are two data files: one for patient visit data and a second for drug mention data. The second file is limited to those visits with mention of medication therapy. For the 1991 data, it is possible to link information on the drug file with information on the patient visit file. Beginning with the 1992 survey year through 2011, one main data file was produced annually that contains both patient visit and drug information.

The National Ambulatory Medical Care Survey (NAMCS), conducted by the National Center for Health Statistics (NCHS), collects data from physician offices to describe practice characteristics and patterns of ambulatory care delivery in the United States. After the COVID-19 pandemic began, NCHS added questions to the 2020 and 2021 NAMCS Physician Induction Interview to evaluate physicians’ experiences related to the pandemic. Specifically, physicians in office-based settings were asked about: shortages of personal protective equipment (PPE); experiences with COVID-19 testing; providers in their office who tested positive for COVID-19; turning away COVID-19 patients; and telemedicine or telehealth technology use at their office. Measures related to these topic areas are further described and displayed in data dashboards here: https://www.cdc.gov/nchs/covid19/namcs.htm.