“At one large practice in Bergen County, New Jersey, the waiting room is empty — but its patients are still receiving care. As of mid-March, the practice is still operating, thanks to the group’s willingness to adapt its work flow, sometimes radically, to mitigate the threat of the COVID-19 pandemic. For example, patients now call the receptionist from their vehicles when they arrive, and wait there until receiving a call back telling them the clinician is ready. The practice has also started using telemedicine for the first time, to the extent it can be adopted in a hurry, and some clinicians are working from home on tasks such as medication …