Thomas Boone Quaid is the son of actor Dennis Quaid and Kimberly Buffington and the twin brother of Zoe Grace Quaid. Born in 2007, Thomas grew up in a prominent Hollywood family while largely remaining outside the entertainment industry.
His early life received significant public attention after he and his twin sister suffered a serious medication error as newborns. Both children recovered, and the experience later influenced Dennis Quaid’s advocacy for patient safety.
Today, Thomas is an adult beginning his own path. Unlike his father and older half-brother Jack Quaid, he has not pursued a publicly documented acting career.
| Category | Details |
|---|---|
| Full Name | Thomas Boone Quaid |
| Date of Birth | November 8, 2007 |
| Age | 18 years old (as of September 2026) |
| Birthplace | Santa Monica, California, U.S. |
| Father | Dennis Quaid |
| Mother | Kimberly Buffington |
| Twin Sister | Zoe Grace Quaid |
| Older Half-Brother | Jack Quaid |
| Known For | Being Dennis Quaid’s son and Zoe Grace Quaid’s twin |
| Education | University of Colorado Boulder, according to recent reporting |
| Career | No publicly documented professional career |
| Nationality | American |
| Public Profile | Largely private |
| Net Worth | Not reliably publicly documented |
Early Life and Family Background
Thomas Boone Quaid was born on November 8, 2007, alongside his twin sister, Zoe Grace. His parents confirmed their names and birth date in testimony before the U.S. House Committee on Oversight and Government Reform in 2008.
His father, Dennis Quaid, is an established American actor whose career spans several decades. His mother, Kimberly Buffington, was married to Dennis Quaid from 2004 until their divorce in 2018.
Thomas also has an older half-brother, Jack Quaid, Dennis Quaid’s son with actress Meg Ryan. Jack later became an actor himself, appearing in productions including The Hunger Games, Scream and The Boys.
Thomas Boone Quaid’s Birth
Thomas and Zoe were born four weeks premature but were described by their parents as healthy after birth. Dennis and Kimberly Quaid said the twins initially spent three days in the hospital before going home.
Eleven days after their birth, the babies were taken to Cedars-Sinai Medical Center in Los Angeles after their parents noticed signs of infection. Medical testing found that both infants had staph infections and required hospital treatment.
The 2007 Heparin Medication Error
Thomas Boone Quaid’s infancy became the subject of national attention because of a serious medication error.
While being treated at Cedars-Sinai, Thomas and Zoe were accidentally given an excessive dose of heparin, a blood-thinning medication. Their parents later testified before Congress about what happened and the dangers they believed the incident demonstrated in the medication-safety system.
The Illinois Appellate Court later documented the family’s lawsuit against Baxter Healthcare Corporation, which involved the twins and allegations related to the medication. The court’s 2009 opinion identifies Dennis and Kimberly Quaid as the children’s parents and confirms that the twins had been hospitalized for staph infections in November 2007.
Thomas and Zoe survived the medical emergency. The experience had a lasting effect on Dennis Quaid, who subsequently became an advocate for greater awareness of medication errors and patient safety.
Thomas Boone Quaid and His Twin Sister
Thomas and Zoe have shared much of their childhood as twins, but both have generally maintained a low public profile.
Their parents’ 2008 congressional testimony provides one of the most detailed firsthand accounts of their early childhood, particularly the medical crisis that occurred shortly after their birth.
Unlike their father and older half-brother, neither Thomas nor Zoe has built a major public career in entertainment.
Education and Life After High School
Thomas’s education was largely kept out of the public spotlight while he was growing up.
Recent 2026 reporting says Thomas graduated from high school and planned to attend the University of Colorado Boulder. Because detailed university records and information about his field of study are not publicly established in authoritative sources, those details are best described as reported plans rather than assumptions about his current academic status.
His move toward college represents one of the first significant publicly reported developments in his life as an adult.
Career
There is no reliable evidence that Thomas Boone Quaid has established a professional acting career.
That distinguishes him from his older half-brother Jack, who followed Dennis Quaid and Meg Ryan into the entertainment industry. Thomas has remained largely outside Hollywood and has not publicly announced a comparable career in film or television.
His future profession and long-term career plans have not been reliably documented.
Personal Life
Thomas Boone Quaid has maintained considerable privacy despite being born into a famous family.
Publicly available reporting primarily concerns his parents, twin sister, older half-brother, childhood medical emergency and more recent transition into higher education. There is no reliable basis for publishing detailed claims about his romantic relationships or other private matters.
Thomas Boone Quaid Age
Thomas Boone Quaid was born on November 8, 2007. He turned 18 in November 2025. His date of birth is confirmed in testimony given by his parents in 2008.
Thomas Boone Quaid Net Worth
There is no reliable public estimate of Thomas Boone Quaid’s personal net worth.
He has not established a publicly documented career or business profile that would make an individual wealth estimate credible. Online figures that assign a specific net worth to him should therefore be treated cautiously.
Interesting Facts About Thomas Boone Quaid
- Thomas Boone Quaid was born on November 8, 2007.
- He is the twin brother of Zoe Grace Quaid.
- Dennis Quaid and Kimberly Buffington are his parents.
- Jack Quaid is his older half-brother.
- Thomas and Zoe experienced a serious heparin medication error as newborns and survived the incident.
- Dennis Quaid later became involved in advocacy surrounding medication errors and patient safety.
- Recent reports say Thomas graduated from high school in 2026 and planned to attend the University of Colorado Boulder.
Frequently Asked Questions
Who is Thomas Boone Quaid?
Thomas Boone Quaid is the son of actor Dennis Quaid and Kimberly Buffington. He is also the twin brother of Zoe Grace Quaid.
When was Thomas Boone Quaid born?
Thomas was born on November 8, 2007.
Who is Thomas Boone Quaid’s twin sister?
His twin sister is Zoe Grace Quaid, who was born on the same day.
Who are Thomas Boone Quaid’s parents?
His parents are actor Dennis Quaid and Kimberly Buffington, who were married from 2004 to 2018.
Is Thomas Boone Quaid related to Jack Quaid?
Yes. Jack Quaid is Thomas’s older half-brother. Jack is Dennis Quaid’s son with actress Meg Ryan.
What happened to Thomas Boone Quaid as a baby?
Thomas and his twin sister were hospitalized with staph infections in November 2007. During their treatment, they were accidentally given an excessive dose of heparin. Both children survived the incident.
Is Thomas Boone Quaid an actor?
There is no reliable public evidence that Thomas has established a professional acting career. He has largely stayed outside the entertainment industry.
Where does Thomas Boone Quaid go to college?
Recent 2026 reporting says Thomas planned to attend the University of Colorado Boulder after graduating from high school.
Conclusion
Thomas Boone Quaid is best known publicly as Dennis Quaid’s son and Zoe Grace Quaid’s twin brother. His childhood drew unusual attention because of the serious medication error he and Zoe experienced as newborns, an event that also shaped their father’s later patient-safety advocacy.
Now an adult, Thomas appears to be pursuing a path separate from Hollywood. Recent reporting places his focus on higher education, while his career and personal plans remain largely private. That limited public footprint makes it especially important to distinguish confirmed information from speculation when discussing his life.
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