Need referral for Northern California. 
Hissing in ears since one month.  Started after intensively playing acoustic guitar for two weeks, apparently straining eye and jaw muscles and tensing up.  During that time my hearing changed every time I played guitar -- because of tensing eye muscles I think.
If I stretch neck or do yoga neck circles or lie in my left side the hissing sometimes  lessens or even goes away for a short time (minutes).  I do have some high frequency hearing loss, though.  
Email me with a referral?
Thanks!
Paul