Unfortunately, many psychologists can no longer afford to participate with
insurance companies or Medicaid/Medicare. The reasons
for this include low reimbursement rates, frequency of denied payment for services, and the burden of insurance related paperwork. While the situation is problematic, there is no reason to assume that you can not get the care you need.
On the bright side, if you can take the time and energy to search, you have a good chance of finding someone who can help.