The regulations of this subpart apply to the award of grants authorized by section 338H of the Public Health Service Act (42 U.S.C. §§ 254q-1) to support the establishment of State programs similar to the National Health Service Corps Loan Repayment Program authorized by section 338B of the Public Health Service Act (42 U.S.C. §§ 2541-1). The purpose of this program is to improve the delivery of health services in medically underserved areas.