Doctors, Legislators Resist Drugmakers' Prying Eyes

Many doctors object to drugmakers' common practice of contracting with data-mining companies to track exactly which medicines physicians prescribe and in what quantities -- information marketers and salespeople use to fine-tune their efforts. The industry defends the practice as a way of better educating physicians about new drugs. . . . The American Medical Association . . . makes millions of dollars each year by helping data-mining companies link prescribing data to individual physicians. It does so by licensing access to the AMA Physician Masterfile, a database containing names, birth dates, educational background, specialties and addresses for more than 800,000 doctors.