Thomas Boone Quaid: Dennis Quaid’s Son and His Life

Thomas Boone Quaid is the son of actor Dennis Quaid and Kimberly Buffington and the twin brother of Zoe Grace Quaid. Born in 2007, he grew up in a well-known Hollywood family but has largely remained outside the entertainment spotlight.

Thomas became publicly known as an infant after he and his twin sister experienced a serious medication error at Cedars-Sinai Medical Center in Los Angeles. Both children recovered, and the incident later became a major part of Dennis Quaid’s public advocacy for patient safety.

Unlike his older half-brother, actor Jack Quaid, Thomas has not established a public acting career. Most reliable information about him concerns his family and the circumstances surrounding his early childhood.

Early Life and Family Background

Thomas Boone Quaid was born on November 8, 2007, alongside his twin sister, Zoe Grace. A 2008 congressional testimony by Dennis and Kimberly Quaid confirms the twins' birth date and identifies them by name.

His father, Dennis Quaid, is a veteran American actor whose film career includes The Right Stuff, The Parent Trap, Frequency and The Day After Tomorrow. His mother, Kimberly Buffington, is a Texas real-estate professional who was married to Dennis Quaid from 2004 until their divorce in 2018.

Thomas also has an older half-brother, Jack Quaid, from Dennis Quaid's previous marriage to actress Meg Ryan. Jack went on to establish his own acting career, including roles in The Hunger Games, Scream and The Boys.

Thomas Boone Quaid’s Birth

Thomas and Zoe were born four weeks premature but were initially described by their parents as healthy. Dennis and Kimberly Quaid detailed the twins' early days in testimony before the U.S. House Committee on Oversight and Government Reform in May 2008.

The twins were taken to Cedars-Sinai on their 11th day of life after their parents noticed signs of infection. Doctors diagnosed them with a staph infection and admitted them for intravenous antibiotic treatment.

The Heparin Medication Error

One of the most significant events in Thomas Boone Quaid's early life occurred during that hospital stay.

Thomas and Zoe were accidentally given an excessive dose of the blood-thinning medication heparin. The error was serious enough to put both newborns' lives at risk. Their parents later described the experience publicly and pursued legal action concerning the medication error.

A 2009 Illinois appellate court opinion confirms that Dennis and Kimberly Quaid brought a lawsuit concerning the twins' treatment and identified Thomas and Zoe as the children involved.

Both children ultimately recovered. The incident had a lasting impact on their father, who became an outspoken advocate for reducing medication errors and improving patient safety. WebMD reported on Quaid's subsequent advocacy and his work surrounding the issue.

Thomas Boone Quaid and His Twin Sister

Thomas shares his birth date with his twin sister, Zoe Grace Quaid.

The twins were raised by Dennis Quaid and Kimberly Buffington during their marriage. Their parents' public testimony shows how closely the family experienced the medical crisis together during the children's first weeks of life.

As they grew older, however, Thomas and Zoe largely remained away from the entertainment industry's constant attention. Unlike their father and older half-brother, neither has established a comparable public career in Hollywood.

Relationship With Dennis Quaid

Thomas is one of Dennis Quaid's three children. In interviews and profiles about his family, Quaid has spoken positively about fatherhood and his relationship with his children.

People reported in 2026 that Quaid remains proud of his three children: Jack, Thomas and Zoe. The publication also noted that Thomas and Zoe had recently reached adulthood after graduating from high school.

Because Thomas is a private individual, detailed information about his everyday relationship with his father is not extensively documented.

Education and Career

Reliable public sources provide limited information about Thomas Boone Quaid's education and professional plans.

Recent reporting in People stated that Thomas was preparing to attend the University of Colorado Boulder after graduating from high school in 2026.

There is no reliable evidence that Thomas has pursued acting professionally. Unlike Jack Quaid, whose career is well documented through film and television credits, Thomas has maintained a substantially more private profile.

Personal Life

Thomas Boone Quaid has largely stayed out of the public eye.

There is no reliable public information establishing a spouse, partner or children of his own. Because he has only recently reached adulthood, detailed claims about his personal life should be treated cautiously unless supported by reputable sources.

His relative privacy is notable given the level of fame surrounding his immediate family.

Thomas Boone Quaid Age

Thomas Boone Quaid was born on November 8, 2007, making him 18 years old in 2026. His birth date is confirmed in testimony provided by his parents to Congress 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 documented public career or business profile that would support a credible financial estimate. Online figures claiming to give his net worth should therefore be regarded as speculative.

Interesting Facts About Thomas Boone Quaid

1. Thomas Boone Quaid was born on November 8, 2007.
2. He is the twin brother of Zoe Grace Quaid.
3. His father is actor Dennis Quaid.
4. His mother is Kimberly Buffington, Dennis Quaid's former wife.
5. Actor Jack Quaid is his older half-brother.
6. Thomas and Zoe experienced a serious heparin medication error as newborns and both recovered.
7. Dennis Quaid later became an advocate for greater awareness of medical errors and patient safety.
8. Recent People reporting says Thomas planned to attend the University of Colorado Boulder after high school.

Frequently Asked Questions About Thomas Boone Quaid

Who is Thomas Boone Quaid?

Thomas Boone Quaid is the son of actor Dennis Quaid and his former wife 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. His parents confirmed his birth date in testimony before Congress in 2008.

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, a former real-estate professional.

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 for a staph infection when they were 11 days old. During their treatment, they were accidentally given an excessive dose of heparin. Both ultimately recovered.

Is Thomas Boone Quaid an actor?

There is no reliable evidence that Thomas has established a professional acting career. Unlike his half-brother Jack, he has generally maintained a private life away from Hollywood.

Conclusion

Thomas Boone Quaid is best known as Dennis Quaid's son and Zoe Grace Quaid's twin brother. His early life attracted national attention because of the serious medication error he and Zoe experienced as newborns, an event that later influenced their father's patient-safety advocacy.

Now an adult, Thomas has largely chosen a private path rather than following his father and half-brother into acting. Recent reporting indicates that he graduated from high school in 2026 and planned to continue his education at the University of Colorado Boulder.