You don't need to report these 1099-MISCs on your tax return. They are not reported to the IRS as your income
Although your National Provider Identifier (NPI) is listed as the "Recipients Identification Number" on the 1099-MISC, it does not get reported to the IRS as your income. Your employer is the "Recipient".
The IRS only uses Individual Taxpayer Identification Numbers (ITIN), Social Security Numbers (SSN), and Federal Employer Identification Numbers (FEIN) to identify your individual income. These are all 9-digit numbers, where the NPI is a 10-digit number.
Box 6. Medical & Health Care Payments are reported to the recipient; your NPI number is incidental to this process, and used by the insurance companies to ensure there is a licensed provider involved in the service and reimbursement.
While not as clear as it might be, the attached excerpt from IRS Instructions for 1099-MISC indicates that the payment is attributed to the Recipient, not the actual provider (unless they are the same).
