Thomas Boone Quaid is the son of actor Dennis Quaid and real estate professional Kimberly Buffington. Born on November 8, 2007, Thomas is also the twin brother of Zoe Grace Quaid and the younger half-brother of actor Jack Quaid. In 2026, he is 18 years old and has recently moved into an important new stage of life after graduating from high school and beginning college.

Although his father has spent decades in Hollywood, Thomas has largely lived outside the entertainment industry. His name became widely known because of his famous family and a serious medical incident he and his twin sister experienced shortly after birth. As an adult, however, publicly available information about Thomas remains limited, making it important to distinguish confirmed details from speculation.

Who Is Thomas Boone Quaid?

Thomas Boone Quaid is a member of the Quaid family, one of the better-known families connected to American entertainment. His father, Dennis Quaid, is an established actor whose career has included major film and television roles, while his older half-brother Jack Quaid has also become a successful actor.

Unlike his father and older brother, Thomas has not established a public career in acting. His childhood and adolescence were generally kept away from the entertainment spotlight, allowing him to grow up with considerably more privacy than many children of celebrities.

Interest in Thomas is primarily connected to his family background, his twin sister Zoe, and the life-threatening medical emergency the twins survived as newborns. In recent years, attention has also turned toward his education and transition into adulthood.

How Old Is Thomas Boone Quaid?

Thomas Boone Quaid is 18 years old as of 2026. He was born on November 8, 2007, which means he reached his 18th birthday in November 2025.

His twin sister, Zoe Grace Quaid, was born on the same day. The twins were born prematurely, and their parents later described the difficult medical circumstances surrounding their earliest days of life.

When Was Thomas Boone Quaid Born?

Thomas Boone Quaid was born on November 8, 2007. His parents are Dennis Quaid and Kimberly Buffington, who were married from 2004 until their divorce was finalized in 2018. Thomas and Zoe were born through a gestational carrier.

In testimony presented to the U.S. House Committee on Oversight and Government Reform in 2008, Dennis and Kimberly Quaid stated that the twins were four weeks premature but initially healthy. After spending three days in the hospital, the babies were taken home by their parents.

Thomas Boone Quaid’s Parents

Thomas is the son of actor Dennis Quaid and Kimberly Buffington.

Dennis Quaid has had a long career in film and television and is also known for his work as a musician. He was previously married to P.J. Soles and Meg Ryan before marrying Kimberly Buffington in 2004. His marriage to Buffington produced twins Thomas and Zoe.

Kimberly Buffington worked in real estate and was previously married to Dennis Quaid. The couple’s marriage ended after years that included periods of separation and reconciliation, with their divorce becoming final in 2018. Their divorce arrangement included joint custody of Thomas and Zoe.

Thomas therefore grew up between two worlds: the highly visible entertainment career of his father and the comparatively private life maintained by his mother and family.

Does Thomas Boone Quaid Have a Twin Sister?

Yes. Thomas Boone Quaid has a twin sister named Zoe Grace Quaid.

Thomas and Zoe were born on November 8, 2007, and their earliest years attracted public attention because of a serious medical incident. Despite the frightening beginning, both children recovered and later continued growing up away from the public spotlight.

Their close connection is an important part of Thomas’s public family story. However, details about their private relationship, daily life and personal interests have not been extensively documented.

Who Is Thomas Boone Quaid’s Older Brother?

Thomas’s older half-brother is Jack Quaid, the son of Dennis Quaid and actress Meg Ryan.

Jack was born in 1992 and later followed his parents into the entertainment industry. He became known for roles in films and television productions including The Hunger Games and The Boys. Unlike Thomas, Jack has built a public professional identity as an actor.

This makes Thomas part of a family with a significant entertainment legacy. His father is an established Hollywood actor, his mother has a real-estate background, and his half-brother has developed a successful acting career of his own.

What Happened to Thomas Boone Quaid as a Baby?

Thomas Boone Quaid and his twin sister experienced a serious medical emergency when they were 11 days old.

After developing infections, the twins were taken to Cedars-Sinai Medical Center in Los Angeles. During their treatment, they were accidentally given an extremely high concentration of heparin, a blood-thinning medication. According to contemporary reporting and the Quaids’ congressional testimony, the twins received a concentration 1,000 times stronger than the intended pediatric dose.

The medication error became a major national story because the babies developed severe bleeding complications and came dangerously close to death. Dennis and Kimberly Quaid later spoke publicly about the incident, using their experience to draw attention to medication safety and preventable medical errors.

The event was particularly frightening because the twins had initially been healthy despite their premature birth. The incident transformed what had begun as a routine period of treatment into an emergency that had lasting consequences for their family.

Did Thomas Boone Quaid Recover?

Yes. Thomas Boone Quaid survived the medical emergency and recovered along with his twin sister.

The family later reported that the children were doing well. By the time they were toddlers, their parents described them as healthy and active, and subsequent public accounts have continued to indicate that the twins survived the incident without publicly reported permanent damage.

The experience nevertheless had a profound effect on their parents, particularly Dennis Quaid. It contributed to his decision to become an advocate for improving patient safety and reducing medical errors in hospitals.

How Did Thomas Boone Quaid’s Medical Crisis Affect Dennis Quaid?

Thomas and Zoe’s medical emergency became a major turning point in Dennis Quaid’s life away from acting.

Following the incident, Dennis and Kimberly established the Quaid Foundation to raise awareness about medical mistakes and patient safety. Dennis also testified before Congress and participated in public discussions about reducing preventable medical errors.

The story later became part of Chasing Zero: Winning the War on Healthcare Harm, a documentary dealing with medical errors and patient safety. The project was produced in connection with the Quaid Foundation and the Texas Medical Institute of Technology.

In this way, an event that began as a frightening moment in Thomas’s infancy eventually became part of a broader public campaign focused on safer healthcare.

Where Did Thomas Boone Quaid Go to School?

Thomas Boone Quaid recently completed high school. In 2026, he moved on to college and began a business program at the University of Colorado Boulder.

His twin sister Zoe also graduated from high school and began college, choosing the University of Virginia. Their father publicly discussed the transition as an important new stage for the family as both twins moved toward independent adult lives.

Because Thomas has maintained a private life, detailed information about his earlier schools, grades, extracurricular activities and academic interests has not been broadly documented.

What Is Thomas Boone Quaid Studying?

As of 2026, Thomas Boone Quaid is beginning a business program at the University of Colorado Boulder.

This is one of the clearest publicly available indicators of his current direction. Rather than entering acting like his father and older half-brother, his current educational path points toward business studies.

It is still too early to know what career he will eventually choose. His college education may lead toward business, entrepreneurship, management or another field, but publicly available information does not establish his long-term professional plans.

Is Thomas Boone Quaid an Actor?

No. Thomas Boone Quaid is not publicly known as an actor.

His father Dennis Quaid and half-brother Jack Quaid are both professional actors, but Thomas has not announced or established an acting career. His public profile is based primarily on being part of the Quaid family rather than on entertainment credits.

It would therefore be inaccurate to list movies or television shows as Thomas Boone Quaid’s acting work. He should be described as a celebrity family member and college student rather than an entertainer.

Who Is Thomas Boone Quaid’s Father, Dennis Quaid?

Dennis Quaid is an American actor and musician whose career spans several decades. He has appeared in numerous films and television projects and has remained a recognizable figure in Hollywood.

His family life has also received significant media attention, particularly his marriages to P.J. Soles, Meg Ryan and Kimberly Buffington, followed by his marriage to Laura Savoie in 2020. His children include Jack, Thomas and Zoe.

For Thomas, having Dennis Quaid as a father places him within a family with an established entertainment legacy. However, Thomas has so far chosen a noticeably different public path.

Thomas Boone Quaid’s Relationship With His Family

Family is one of the most important parts of Thomas Boone Quaid’s publicly documented story.

He is the twin brother of Zoe Grace Quaid and the younger half-brother of Jack Quaid. His parents, Dennis Quaid and Kimberly Buffington, divorced in 2018, but both have continued to be connected to Thomas and Zoe’s lives.

In 2026, the family’s transition was especially notable because Thomas and Zoe moved from high school into college. Their father has described this stage as the children becoming more independent, reflecting the natural shift from childhood into adulthood.

What Is Thomas Boone Quaid’s Net Worth?

Thomas Boone Quaid’s exact net worth has not been publicly confirmed.

There is no reliable public financial record establishing that he has accumulated a personal fortune of his own. Because he is only beginning college and has not established a widely documented professional career, online figures claiming a specific net worth should not be treated as verified.

His father’s substantial Hollywood career should also not be confused with Thomas’s personal finances.

Where Is Thomas Boone Quaid Now?

As of 2026, Thomas Boone Quaid is beginning college at the University of Colorado Boulder after graduating from high school.

Recent reporting places him in a business program and marks the transition as a major step toward adulthood. His move to college also means he is beginning to build a life that is increasingly separate from the celebrity environment in which he was raised.

Beyond his education, little verified information about Thomas’s day-to-day life is publicly available. He has not developed the kind of media presence associated with his father or brother, and maintaining that privacy appears to be an important part of his public story.

FAQs

Who is Thomas Boone Quaid?

Thomas Boone Quaid is the son of actor Dennis Quaid and Kimberly Buffington. He was born in 2007 and is the twin brother of Zoe Grace Quaid. He is also the younger half-brother of actor Jack Quaid. Unlike his father and half-brother, Thomas has not pursued a public career in acting.

How old is Thomas Boone Quaid in 2026?

Thomas Boone Quaid is 18 years old in 2026. He was born on November 8, 2007. He recently completed high school and has moved into college, marking the beginning of his adult life.

When was Thomas Boone Quaid born?

Thomas Boone Quaid was born on November 8, 2007. His twin sister, Zoe Grace Quaid, was born on the same day. The twins were born prematurely and later experienced a serious medical emergency as newborns.

Who are Thomas Boone Quaid’s parents?

Thomas’s parents are actor Dennis Quaid and Kimberly Buffington. The couple married in 2004 and later divorced, with their divorce finalized in 2018. They share twins Thomas and Zoe.

Does Thomas Boone Quaid have a twin?

Yes. Thomas Boone Quaid has a twin sister named Zoe Grace Quaid. Both were born on November 8, 2007. The twins survived a serious medication error shortly after birth and have continued into adulthood outside the entertainment spotlight.

Who is Thomas Boone Quaid’s brother?

Thomas’s older half-brother is Jack Quaid, the son of Dennis Quaid and Meg Ryan. Jack is an actor known for productions such as The Hunger Games and The Boys. Thomas and Jack share Dennis Quaid as their father.

What is Thomas Boone Quaid studying?

As of 2026, Thomas Boone Quaid is beginning a business program at the University of Colorado Boulder. He graduated from high school shortly before entering college. Public information does not yet establish what specific career he intends to pursue after completing his education.

What happened to Thomas Boone Quaid as a newborn?

At 11 days old, Thomas and his twin sister were hospitalized after developing infections. They were accidentally given an extremely concentrated form of heparin, resulting in a near-fatal overdose. Both children survived, and the experience later motivated their parents to advocate for greater patient safety.

Is Thomas Boone Quaid an actor?

No. Thomas Boone Quaid has not established a professional acting career. Although his father Dennis Quaid and half-brother Jack Quaid are actors, Thomas has remained outside the entertainment business and is currently focused on his college education.

What is Thomas Boone Quaid’s net worth?

Thomas Boone Quaid’s exact net worth has not been publicly confirmed. He is a young college student without a widely documented professional career, so specific figures circulating online should be considered unverified rather than established financial facts.

Conclusion

Thomas Boone Quaid is best known as Dennis Quaid’s son, Zoe Grace Quaid’s twin brother and Jack Quaid’s younger half-brother. His early life included a serious medical crisis that later influenced his parents’ work in patient-safety advocacy, but Thomas himself has remained largely outside the public entertainment world.

In 2026, his story is entering a new chapter. After graduating from high school, he has started a business program at the University of Colorado Boulder, suggesting that his future may develop in a direction separate from his family’s Hollywood legacy.