Received a call to our land line from this number today (1 May 2017) at 2:13 pm (Central Time). Caller ID: Med Clinic. Didn't answer. No message left. If they call again (which they probably will), I will block the number.
And... they are still at it, on August 7, 2017. It seems that they are using 816-207-2948, more often than 816-207-2950, as an apparent originating number. At least there are more reports on 816-207-2948, in 800notes.com.