That's complicated. Nexus 6 comes in 2 types. One supports GSM and CDMA, but the other only supports GSM. Verizon is CDMA. The GSM version won't work at all.
On top of that, at one time it was limited only to Nexus 6 models that were purchased via Google Play. On top of that, if it shows up and a non-Verizon phone, you may have to change your existing plan.
Best to ask a Verizon rep first....
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