This is a legitimiate number. It's from the Providence Rheumatology Office. Normally that call from a 503-215-**** number, but this time it was from this 360 number. Not sure why. They were calling to confirm my appointment.
Hospital billing department, calling with a question about insurance. This happened to be for Silverton Hospital in Silverton, Oregon. It seems like it is a general hospital billing/event reminder number serving many hospitals.