I recently purchased a Ledger Nano S to secure my crypto assets that are currently held at Coinbase Pro. To secure my coins, the Ledger needs to know my address.
Dude, this is not how it works.
To secure your coins, Ledger Nano needs to
generate new addresses for your coins.
To do so, just insert you Ledger Nano S in your computer
Create a new wallet. Note down the SEED (24 words) in a piece of paper.
THen you will generate a new Bitcoin Address. Move all your coins from coinbase to that address, and your coins are safe.