Teladoc Health Inc. said its remote medical appointments have more than doubled in number since early March, a sign the coronavirus pandemic is remaking how doctors take care of patients.

Teladoc said it is conducting more than 20,000 remote medical appointments a day, more than twice the average daily volume of visits during the first week in March. The Purchase, N.Y., company hosted 1.8 million visits in the first quarter, up from 1.06 million visits a year earlier.

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