caselaw.findlaw.com/us-1st-circuit/1880483.html

Daniel JUSTINIANO; Francisco Menéndez; Person A, Plaintiffs, Appellants, v. SOCIAL SECURITY ADMINISTRATION; Nancy A. Berryhill, Acting Commissioner  ...

www.ssa.gov/OP_Home/ssact/title07/0702.htm

Sec. 702. [42 U.S.C. 902] (a)(1) There shall be in the Administration a Commissioner of Social Security (in this title referred to as the “Commissioner”) who shall ...

www.ssa.gov/history/commissioners.html

The Social Security Administration (SSA) came into being on July 16, 1946. ... reorganization and replaced by the SSA, with a single Commissioner as its head.

www.supremecourt.gov/DocketPDF/17/17-1184/46993/20180828155446293_17-1184%20Brief%20in%20opposition.pdf

Aug 28, 2018 ... v. NANCY A. BERRYHILL, ACTING COMMISSIONER,. SOCIAL SECURITY ADMINISTRATION. ON PETITION FOR A WRIT OF CERTIORARI.

www.ssa.gov/org/coss.htm

The SSA Organization website details information about each of SSA's components, their structure, current leadership, and functions.