The AAHP is an organization that advances the profession of Health Physics, encourages the highest standards of ethics and integrity in the practice of Health Physics, enhances communications among Certified Health Physicists and provides a means for Active CHPs to participate in the certification program. All Certified Health Physicists are eligible for membership in the AAHP. Additionally, persons who have successfully completed one part of the two part exam are eligible for associate membership for that period of time that they remain eligible to take the remaining part.