Unless I'm not understanding how Google Voice works, there are only two ways of getting a new GV number, either give up my present GV number, or open up a new email account and put in for a GV number on that account, neither of which I'm going to do.
The most recent case where my iPhone did not ring came from a Benefits Express person who wasn't on my contact list. The only way I knew he called was the being notified by GV that I had new voicemail. I then went to GV and "turned on" forwarding to my T-Mobile To Go Android back up phone. Later that night I received another call from the same person. iPhone was silent, Android phone was ringing. I almost didn't get to the Android phone in time before the call went to voice mail. I already have my iPhone with Verizon set to maximum number of rings before going to VM.
The problem doesn't happen all the time. Most calls do ring the iPhone, but the few that don't ring the phone it is annoying. On Groups and Circles some of them also included Google Talk for forwarding. I just went in and disabled that option.
I did install Hangouts and see if that may solve the problem for now. It's really not and ideal solution as the calls are treated as data, not cellar. As far as checking with Verizon users, I thought I would check here first. Looks like I'm going to have to go to Howards Forum and post my question there. Thank you for your help. I hate to resort to the last option and get rid of the iPhone for and Android. In the mean time I'll carry my backup Android phone with me until I either give up on the iPhone or I solve the problem.
Again thank you for offering solution to my problems. Keeping fingers crossed disabling Google Talk might solve the problem.