The neuro is likely thinking that an MRI or CT Scan will not show anything. That is likely the case. The PT has more of a hands on understanding of your body. That matters more in my opinion. An upper cervical chiropractor can often help. Check out
www.NUCCA.org and
www.atlasorthogonality.com to find a local chiropractor. They are not cheap due to the x-rays needed. Insurance usually only covers the actual treatments.
Neuros are know to deny anything that is not imageable.