FILTER inside CONCATENATEX

EDIT: Turns out it wasn't working perfectly, many attempts later and i have it fixed. Had to remove the ADDCOLUMNS and move the DISTINCTCOUNT into the SUMMARIZE. Changed the code below to show final working answer.

Thank you so much! I chucked the whole thing into a filter and it works perfectly now.

List of Doctors = 
    CONCATENATEX (
        FILTER (
            SUMMARIZE (
                CALCULATETABLE (
                    Episodes,
                    KEEPFILTERS (
                        TREATAS (
                            {
                                1
                            },
                            CalendarRequested[Is Same As Today]
                        )
                    ),
                    KEEPFILTERS (
                        TREATAS (
                            DATESINPERIOD (
                                CalendarRequested[Date],
                                TODAY (),
                                -85,
                                DAY
                            ),
                            CalendarRequested[Date]
                        )
                    )
                ),
                Episodes[Doctor],
                Episodes[Location],
                "Seen In Three", DISTINCTCOUNT ( Episodes[Requested] )
            ),
            [Seen In Three] > 1
        ),
        [Doctor],
        ", ",
        [Doctor]
    )