Parity for Public Health Service Ready Reserve Act This bill reauthorizes through FY2025 the Ready Reserve Corps of the U.S. Public Health Service (USPHS). It also extends educational assistance, medical benefits, leave allowances, and other benefits that apply to the reserve components of the armed forces to the Ready Reserve Corps. (The Ready Reserve Corps is comprised of trained health care and public health personnel that may be deployed alongside active-duty officers of the USPHS to respond to health emergencies and improve access to health services.)