I currently am in network with Blue Cross/Blue Shield, United and Triwest (VA).
Insurance coverage varies from company to company. Contact your insurance provider to learn what kind of care is covered. Many times it's easier to be provided with a "superbill" that you submit to your insurance company. And if they accept it, they will reimburse you for your treatments.
If you have a "flex plan" or a "health savings account", you should be able to pay through those accounts. For some services, like smoking cessation, employers are often willing to provide financial assistance.
I accept all major credit cards, paypal, cash and checks.