The goal of the reorganizations was to coordinate the previously fragmented divisions to provide a holistic approach to large, overarching problems.
The quick succession of reorganizations created several operating agencies that existed for a short time, as individual components were shifted between them.
Its only major reorganization since then had occurred in 1943, which collected its several divisions into three operating agencies: the Bureau of Medical Services (BMS), Bureau of State Services (BSS), and National Institutes of Health (NIH), plus the administrative Office of the Surgeon General (OSG).
[5] The purpose of the 1968 reorganization was to create agencies that could coordinate the relationships between divisions with similar focus, providing a holistic rather than fragmented approach.
[9] CPEHS stemmed from a belief that environmental health concerned not only a person's natural environment but also the products they consumed.
"[15] A 1969 publication about CPEHS contained the editor's note, "Another reorganization of the Food and Drug Administration has occurred since this paper was prepared.
Even though these organizational details are no longer accurate, the paper is being published..."[7] The resulting organizations came to be seen as large and unwieldy.
[5][16] Another effect of the reorganizations was the creation of the position of Assistant Secretary for Health, a political appointee who supplanted the Surgeon General as the head of the PHS.
By the end of 1968, PHS's operating divisions were the National Institutes of Health, HSMHA, and CPEHS, the last two of which were organized as follows: The breakup of CPEHS was largely a consequence of the formation of the Environmental Protection Agency (EPA) in 1970, as the result of a desire by the new Nixon administration to gather all federal environmental activities into a single autonomous regulatory body.
[15] During 1970–1971, most of the CPEHS was moved out of PHS and HEW to form the core of the newly created EPA.
The Food and Drug Administration had already become its own operating division within the PHS earlier in 1970, causing CPEHS to be briefly renamed simply the Environmental Health Service.
[25] In 1992, the Alcohol, Drug Abuse, and Mental Health Administration was abolished, with its three institutes and their research programs moved into NIH, and their treatment functions split off to form the new Substance Abuse and Mental Health Services Administration.