General Billing Puzzle

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Across
  1. 2. An entity that pays for persons Health expenses
  2. 3. Letter that allows insurance to pay directly to Provider
  3. 5. Insured person
Down
  1. 1. Once received, only then insurance will start paying
  2. 4. Participating provider's account number
  3. 6. A number given by the doctor for every medical visit