One Medical offers primary care to patients who are comfortable using technology to do things like book appointments. : Primary care group One Medical is in talks to raise more than $200 million in growth capital from the private equity firm Carlyle Group, according to people with knowledge of the talks. The firm also aims to buy an additional $100 million worth of shares from existing investors. The company is in the late stages of conversation, the sources say, as the deal is not yet done. The company declined to comment.