At Yale-New Haven Hospital, he was a pediatric intern from July 1945 to June 1946.[7] Then, he served from 1946 to 1948 in the Medical Corps of the United States Army as Captain and as the chief of the paraplegic section.[7]
In 1961, McGovern established the John P. McGovern Foundation as a private philanthropy.[3] Through the Foundation, McGovern gave millions of dollars to various local and health charities.[9][10] As of 2003, the foundation was the 10th largest in Houston.[10]
In 2001, McGovern gave $5 million to the University of Texas Medical Branch (UTMB) to create endowments for 5 William Osler Scholars, forming the John P. McGovern Academy of Oslerian Medicine. The endowments award practicing faculty physicians for their commitment to teaching, practicing and emulating the principals of compassionate care.[10]
In 2003, the Foundation gave $2.5M to UTMB, with $1M provided to create an endowment for a 6th Osler Scholar.[10]
Various donations to Texas Medical Center for the construction of facilities, a commons area and gardens.[13]
In November 2015, the Foundation donated $75M to bolster medical training, provide full scholarships, and support scientific discovery and innovation at The University of Texas Health Science Center at Houston. It has been the single largest gift from the John P. McGovern Foundation. In honor of the largest gift in university history, the medical school was renamed the John P. and Kathrine G. McGovern Medical School.[14][15] The endowment will also support the school's McGovern Center for Humanities and Ethics which was established from an earlier foundation gift.[16]
In January 2017, the foundation gave $20 million to the University of Houston College of the Arts to create a permanent endowment that will benefit arts students and faculty, as well as community outreach. The Kathrine G. McGovern College of the Arts will be the first college at the university named after a former student and also the first named after a woman.[17][18]
Surgeon General's Medal in 1989 for "lifetime of meritorious and multi-faceted contributions to the broad field of health promotion and disease prevention and specifically, more recently for his seminal work on our Drunk Driving Initiative".[21][22]