Based on my experience you will have to submit a claim to your health insurance provider first, then submit a claim to DAN for the unpaid balance. Also in my experience, DAN also approves or dissapproves certain diagnosis and treatments muhc like any HMO.
In my spouses case she was treated in an ER for a dive related injury (based on the the combined judgement of the ER physician, the hyperbaric physician she consulted with and the person at DAN she spoke with on the phone). Despite that it took 18 months and a threatened complaint to the state's insurance commission to get reimbursed by DAN as the particular diagnosis was not on their approved list.
So DAN insurance is (maybe) worth having, but your primary insurance may be more useful and it may take a long time to get reimbursed in some cases if it is not a textbook example of a dive injury.
In my spouses case she was treated in an ER for a dive related injury (based on the the combined judgement of the ER physician, the hyperbaric physician she consulted with and the person at DAN she spoke with on the phone). Despite that it took 18 months and a threatened complaint to the state's insurance commission to get reimbursed by DAN as the particular diagnosis was not on their approved list.
So DAN insurance is (maybe) worth having, but your primary insurance may be more useful and it may take a long time to get reimbursed in some cases if it is not a textbook example of a dive injury.