A hospital tax ID number is a number given to a hospital by the IRS for identification purposes. A tax ID number is used by the IRS to keep track of businesses, as stated by the U.S. Small Business Administration. Since many hospitals have to operate as businesses, they use a tax ID number for tax purposes and accepting charity.
The tax ID number is also known as the employer identification number. Businesses apply for and receive these numbers to use when paying employees, filing taxes, or in the case of charities, accepting monetary donations. Businesses may apply for these online at the IRS website. Those making donations to the hospital can use the tax ID number when claiming the donation as a deduction on their taxes, as stated by Child's Play.