National Health Service Corps Improvement Act of 2013 - Amends the Public Health Service Act to revise the definition of "primary health services" for purposes of the National Health Service Corps to include optometry health services.
Includes optometrists within: (1) the fellowship program for the delivery of primary health services in health professional shortage areas, (2) the National Health Service Corps Scholarship Program, and (3) the National Health Service Corps Loan Repayment Program.