# List of United States Public Health Service Commissioned Corps four-star admirals

The rank of admiral (or full admiral, or four-star admiral), ranks above vice admiral (three-star admiral) and is the highest rank achievable in the United States Public Health Service Commissioned Corps.
There have been six four-star admirals in the history of the U.S. Public Health Service Commissioned Corps. All six were directly commissioned into the regular corps. One was already an officer in the regular corps and the other five were originally civilians who were appointed to the regular corps and to grade upon taking office.

## List of admirals

The following lists of four-star admirals are sortable by last name, date of rank. The date listed is that of the officer's first promotion to admiral, and may differ from the officer's entry in the U.S. Public Health Service register. The year commissioned is taken to be the year the officer was directly commissioned which may precede the officer's actual date of commission by up to two years. Each entry lists the admiral's name, date of rank, active-duty position held while serving at four-star rank, number of years of active-duty service at four-star rank (Yrs), year commissioned and source of commission, number of years in commission when promoted to four-star rank (YC), and other biographical notes.
| # | Name | Date of rank | Position | Yrs | Commission | YC | Notes |
| 1 | masonJames O. Mason | 1 Oct 1989 | Assistant Secretary for Health/U.S. Representative, Executive Board of the World Health Organization (ASH/USREPWHO), 1989–1993. | 4 | 1983 (direct) | 6 | (1930–2019) Acting Surgeon General, 1989–1990. |
| 2 | satcherDavid Satcher | 13 Feb 1998 | Assistant Secretary for Health/Surgeon General (ASH/SG), 1998–2001. | 3 | 1998 (direct) | 0 | (1941– ) Reverted down to a vice admiral in 2001 after completing three years as ASH but remained as Surgeon General until 2002. |
| 3 | agwunobiJohn O. Agwunobi | 4 Jan 2006 | Assistant Secretary for Health (ASH), 2006–2007. | 2 | 2005 (direct) | 0 | |
| 4 | garciaJoxel García | 28 Mar 2008 | Assistant Secretary for Health/U.S. Representative, Executive Board of the World Health Organization (ASH/USREPWHO), 2008–2009. | 1 | 2008 (direct) | 0 | (1962– ) First Puerto Rican to serve as Assistant Secretary for Health. |
| 5 | giroirBrett P. Giroir | 22 Feb 2018 | Assistant Secretary for Health/Senior Advisor for Mental Health and Opioid Policy (ASH/Senior Advisor), 2018–2020. Assistant Secretary for Health/U.S. Representative, Executive Board of the World Health Organization/Senior Advisor for Mental Health and Opioid Policy/Director, Coronavirus Diagnostic Testing (ASH/USREPWHO/Senior Advisor/Director), 2020–2021. | 3 | 2018 (direct) | 0 | (1960– ) Acting Commissioner, Food and Drugs Administration 2019. |
| 6 | levineRachel L. Levine | 19 Oct 2021 | Assistant Secretary for Health (ASH), 2021–2025. | 4 | 2021 (direct) | 0 | (1957– ) Secretary, Pennsylvania Department of Health, 2017–2021. First openly transgender person to achieve four-star rank in any uniformed service. |

### 1988–present
## Legislation

The following list of Congressional legislation includes major acts of Congress pertaining to appointments to the grade of admiral in the United States Public Health Service Commissioned Corps.
| Legislation | Citation | Summary |
| Act of November 3, 1990 | 104 Stat. 1289 | Specified O-10 grade for a commissioned officer of the Public Health Service serving as Assistant Secretary for Health. |