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Now Playing: 12-18-13 Marketplace Tech - Bitcoin at the doctor's office

All this week, Marketplace Tech is talking about the digital currency Bitcoin. We've heard about what it is and how a company called Coinbase is trying to help more customers and businesses use it for transactions. Today we talk to one of the new businesses that is starting to use Bitcoin -- a private medical practice in San Francisco. Plus, healthcare.gov gets a new boss. And, new regulations could be coming for data brokers.