Thomas Boone Quaid: Dennis Quaid’s Son, His Twin Sister and a Famously Difficult Start
Thomas Boone Quaid is the son of actor Dennis Quaid and Kimberly Buffington, born on November 8, 2007, alongside his fraternal twin sister, Zoe Grace. He turned 18 in November 2025, graduated from high school in June 2026, and in the summer of 2026 began studying business at the University of Colorado Boulder. He is also the half-brother of actor Jack Quaid.
Thomas has never courted attention, and the public record about him is shaped by two moments: his birth and a frightening hospital error that followed it, and his recent transition to college. This article covers both, then explains why little else can be responsibly written about someone who is only just an adult.
Snapshot
| Topic | What is reported |
|---|---|
| Full name | Thomas Boone Quaid |
| Born | November 8, 2007; fraternal twin of Zoe Grace Quaid |
| Parents | Dennis Quaid and Kimberly Buffington |
| Half-brother | Jack Quaid, born in 1992 |
| High school graduation | June 3, 2026 |
| College | University of Colorado Boulder, studying business |
| Public career | None reported |
| Social media, interests, relationships | Not reliably documented |
Birth and Family
According to Access Online’s report from the day of the birth, Thomas arrived at 8:26 in the morning on November 8, 2007, and weighed 6 pounds, 12 ounces. His sister was born two minutes later and was smaller at 5 pounds, 9 ounces. A surrogate carried and delivered the twins. Fox News adds that the family’s publicist announced the births the following Monday and that the babies were born in Santa Monica, California.
The pregnancy route carried personal meaning for his parents. Reporting at the time noted that Kimberly Buffington had experienced five miscarriages before the couple turned to a gestational carrier. Dennis Quaid and Buffington had married on July 4, 2004, and they were the twins’ biological parents. The couple’s joint statement after the birth was a short expression of gratitude, and few other comments were made.
Thomas’s family includes an older half-brother, Jack Quaid, who was born in 1992 during Dennis Quaid’s marriage to actress Meg Ryan. The age gap means Thomas grew up in a different generation of the family from Jack, who was already a teenager when the twins arrived.
A Medical Emergency in the First Weeks
What Happened
The most widely reported event of Thomas’s early life took place in November 2007, when he and his sister were only days or weeks old. Access Online reported on November 28, 2007 that one of the twins had developed a staph infection near the umbilical cord, which became potentially life-threatening. While the babies were on intravenous lines at Cedars-Sinai Medical Center in Los Angeles, the lines were flushed with a dose of the blood thinner heparin that was reported to be roughly 1,000 times too strong. The infants were in intensive care when that article ran.
Later coverage, including the reference list on Dennis Quaid’s Wikipedia entry, makes clear that both children recovered. I did not find any account describing lasting health problems for Thomas, and none should be assumed.
The Legal and Public Aftermath
The family’s response became a public story of its own. Wikipedia’s summary of the episode says the Quaids sued the drug manufacturer, Baxter Healthcare, over how the two heparin strengths were packaged, and that they testified before a congressional committee in May 2008 about state-law negligence claims against drugmakers.
By December 2008, NBC Washington reported that the parents had agreed to a $750,000 settlement with Cedars-Sinai, without any admission of wrongdoing by the hospital. The petition left open claims on behalf of the children, and noted that the lawsuit against Baxter in Illinois had been dismissed. Dennis Quaid went on to become an advocate for patient safety, including through documentaries about preventable medical errors.
The incident is included in Thomas’s biography solely because he experienced it during infancy. He did not choose to be part of a public conversation about hospital safety, and nothing in the reporting suggests that he or his sister has spoken about it publicly.
Growing Up Out of the Spotlight
After the 2008 settlement, news about the twins dwindles. Reliable outlets mention them mostly when their father talks about parenthood, and I could not find a single interview in which Thomas speaks about his own life. That absence matters for readers searching his name. Pages that describe his hobbies, personality, social media accounts or relationships rarely say where those details come from, and I did not include any of them.
His childhood also coincided with the breakdown of his parents’ marriage. According to Wikipedia, Dennis Quaid and Kimberly Buffington announced a divorce in June 2016, and it was finalized on April 27, 2018, after an earlier divorce filing in 2012 had been withdrawn. Wikipedia lists Quaid’s later marriage to Laura Savoie in June 2020. These are facts about the adults in his life, and they are mentioned only as context. How any of it affected Thomas is not something the public record can answer.
Graduation and College
The most recent verified information is from the summer of 2026. According to Reality Tea’s report from August 27, 2026, Thomas graduated from high school on June 3, and both of his parents attended the ceremony and posed for photographs together. He then enrolled at the University of Colorado Boulder to study business. His sister Zoe is studying business at the University of Virginia.
Dennis Quaid discussed the transition with People, saying in effect that the twins had just started college and were now on their own. The coverage describes him as optimistic and says his guidance to them is to find work they love and figure out how to make a living from it. That is the extent of what is known about Thomas’s plans; no outlet has reported a career ambition, an acting interest or a public project.
Why Not More Detail?
It is tempting to fill a profile like this with guesses, and many websites do. Here is why this one does not:
- Thomas reached adulthood in November 2025, and public interest in him stems solely from his family background.
- No reliable outlet has published an interview, a social account or a statement from him.
- Most “biography” pages that mention his hobbies or net worth do not cite a source.
A short, accurate profile is more useful than a long, speculative one, and it respects the fact that he has had very little say in how much of his life is public.
Claims to Treat With Caution
| Claim you may see | What the evidence supports |
|---|---|
| An acting or modeling career | Nothing reliable reports one |
| A net worth figure | No method or source is given anywhere |
| A romantic partner | Not reported by reliable outlets |
| Lasting health effects from 2007 | Not reported; reports say the twins recovered |
| An active social media presence | Not verified |
| Where he went to high school | Not reported in the sources I found |
Frequently Asked Questions
Who is Thomas Boone Quaid? He is the son of actor Dennis Quaid and Kimberly Buffington, as well as the twin brother of Zoe Grace Quaid.
When was he born? He was born via surrogate on November 8, 2007, with his twin sister arriving two minutes later.
Does he have siblings? His siblings include his twin sister, Zoe, and his half-brother, actor Jack Quaid.
What happened to the Quaid twins in 2007? They were given a heparin dose far stronger than intended while in intensive care at Cedars-Sinai. They recovered, and their parents later settled with the hospital for $750,000.
Where is Thomas Quaid in college? He is reportedly studying business at the University of Colorado Boulder, according to an August 2026 report.
Is Thomas Quaid an actor? No reliable source reports that he is.
How old is he? He reached the age of 18 on November 8, 2025.
Conclusion
Thomas Boone Quaid’s public story is short by design. It starts with a high-profile birth and a hospital error that fed a national conversation about patient safety, and it picks up again with a quiet milestone: a high-school graduation and the start of college. Everything in between belongs to him. The sensible way to cover him is to report what is documented and leave the rest alone.
For other profiles of people close to famous families that stick to what can be verified, see our article on Luciana Barroso, Matt Damon’s wife, our piece on Illia Wayans, Shawn Wayans’ daughter, or return to the Trend Loom homepage.
