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AMA Physician Masterfile

Established by the American Medical Association (AMA) in 1906, the Physician Masterfile was initially developed as a record keeping device supporting membership and mailing activities. Since then, the Masterfile has expanded to include significant education, training and professional certification information on virtually all Doctors of Medicine (MD) and Doctors of Osteopathic Medicine (DO) in the United States, Puerto Rico, Virgin Islands, and certain Pacific Islands.

The Physician Masterfile includes current and historical data for more than 1.4 million physicians, residents, and medical students in the United States. This figure includes approximately 411,000 graduates of foreign medical schools who reside in the United States and who have met the educational and credentialing requirements necessary for recognition.

A record is established when individuals enter medical schools accredited by the Liaison Committee on Medical Education (LCME), or in the case of international medical graduates, upon entry into a post-graduate residency training program accredited by the Accreditation Council for Graduate Medical Education (ACGME). IMG's are also identified when they obtain a license from one of the 68 US licensing jurisdictions. As a physician's training and career develop, additional professional certification information is added to their Masterfile record.

Masterfile records are never removed even in the case of a physician's death. The AMA maintains information on more than 205,000 deceased physicians. These data are shared with other organizations and agencies who credential physicians and are used to identify individuals who attempt to fraudulently assume the credentials of deceased physicians.

The AMA Division of Survey and Data Resources (SDR) is dedicated to effectively and accurately collecting, analyzing, and managing data within the Masterfile which serves as a primary resource for professional medical organizations, universities and medical schools, research institutions, governmental agencies, and other health-related groups. Use of the Masterfile by agencies and organizations concerned with verifying physicians' credentials and health manpower planning is fundamental to the AMA's mission to strengthen the medical profession and ensure quality health care for the American public.

The AMA seeks to achieve a high degree of accuracy in the organization and publication of physician data. Physicians' records are subject to change and are continuously updated through the extensive data collection and verification efforts performed within SDR.

Physicians are presented with their Masterfile information and asked to submit updates electronically through the Online Data Collection Center or direct written change requests to the address below.

American Medical Association
Division of Survey and Data Resources
Attn: Data Verification Unit
AMA Plaza
330 N Wabash Avenue
Chicago, IL 60611
(312) 464-5759
(312) 464-4880 (Fax)

Please note that AMA requires verification from the primary source before applying changes to medical education, residency training or other professional certification data.