The patient sees the office, not the cell phone
Outcome 9 years after I left, still carrying the call shielding the identity layer was built for.
Physicians need to reach patients but face a structural bind: call from the hospital desk phone, which means being at the hospital, or from a personal cell, which gives the number away for good — no boundary, no audit trail, and a safety risk. Most choose neither, and the call doesn't happen. When they do call from a cell phone, patients see 'Unknown Caller' and don't answer.