Who called from 3148422459

that would be a 636 number

It is a calling service that verifies medical/doctor appointments.

If they're calling to remind people of medical appointments they're doing a VERY poor job.  They never leave a message.  If you are there and pick up the phone there is no one , not even a recording there.  Whoever is paying for this "service" is getting ripped off.

Definitely an appointment reminder phone call.  For me at least, they did leave a detailed voicemail with the doctor's office name and date/time of my appointment.

It's a doctor appointment reminder from Signature Medical Group, not a solicitation call.