This is JUST my opinion, but verification of benefits and eligibility are a part of the revenue cycle management, so if you are a billing company that offers full practice management, it really SHOULD be a part of your services. If you leave it to the provider or office, trust me it's not pretty and makes you look bad. I use the old saying "If you want something done right, do it yourself" It's just better in the big picture. I charge a flat fee, but my flat fee is based on my time so I get paid for everything I do and that includes verifying benefits, eligibility, patient responsibility and any initial authorizations that need to be done.