Advion, formerly known as National Association for the Support of Long Term Care (NASL) until October 2022 [1] is a United States trade association of ancillary providers of products and services to the post-acute care industry.

Advion member companies employ over 25,000 therapy professionals and represent approximately 64% of the nation's long-term care health information technology providers.

[citation needed] Advion continually influences national healthcare policy, particularly, improved Medicare ancillary payments and assurance that laws and regulations are in place to promote quality patient care.

Advion has established a positive working relationship with the government and leads initiatives, such as, extension of the therapy cap exceptions process, an alternative to a therapy cap, competitive bidding process, and adoption of health information technology.

Advion members receive daily communications regarding federal and state government healthcare decision-making; participate directly in the government healthcare policy-making process; can speak directly to elected, appointed, and senior health policy officials; and receive discounts on meeting registration.