If you go to the source of the data linked there -- cms.gov -- you'll see that this is only one side of the equation: health spending by product.
This explicitly does not include insurance costs.
Private health insurance costs are covered by "healthcare spending by major sources of funds" and reached 1.5 trillion, the same dollar amount as hospitals cost as a product group.
That is the dollars spent for insurance plans. Those dollars then reappear in the product spending figures, less some amount of overhead and margin for insurance. Those additional data you provided don't say anything more about exactly what that is, nor do they imply the total overhead and margin of health insurance is $1.5T.
This explicitly does not include insurance costs.
Private health insurance costs are covered by "healthcare spending by major sources of funds" and reached 1.5 trillion, the same dollar amount as hospitals cost as a product group.
https://www.cms.gov/files/document/highlights.pdf