Does the dr think the pain and symptoms are related to the C3-C6 area?

Since you mentioned long time desk & phone work and with your symptoms, I just wanted to mention chronic RSI or even possible thoracic outlet syndrome TOS for short).
Or you could have both the c spine issues as well a some amount of TOS.
TOS is not well known and it takes a very skilled dr to sort out any spine vs TOS symptoms.

Have you had any kind of PT at all?
How is your upper body posture? head forward, shoulder forward?
If so that will close down the area where many nerves and blood flow goes thru, so that is some thing to work on.
Maybe lay on the floor in the yoga corpse pose a few times a day and see if that begins to help at all?

We have a thoracic outlet syndrome forum if you want to read a bit more about it.
sticky thread -Our Useful Links - Websites, Articles & Polls (TOS)
post #1 here has the basic starter info & links-
http://neurotalk.psychcentral.com/thread84.html

Our Symptoms of thoracic outlet syndrome -
http://neurotalk.psychcentral.com/showthread.php?t=5618