How can I join a buffer layer to the layer it was created from?

I have two relevant layers for this problem:

1. Real estate parcels (point data)


2. Multiple ring buffer layer - contains multiple buffer rings around each particular real estate parcel. (0.5, 1, 1.5, and 2 miles).

There are 2900 real estate parcels, each one a multiple ring buffer layer containing 4 quartiles. The buffer layer table has 2900*4 entries since each parcel has 4 buffer layers.

I need to join the buffer layers with the parcel they were created from, and there doesn't seem to be an easy way. Any tips on a useful tool?