Thomas Boone Quaid is known mainly because he is the son of Hollywood actor Dennis Quaid. Yet despite growing up in a famous family, Thomas has largely stayed away from cameras and public attention. His life has been shaped by his family background, a frightening medical emergency during infancy, and his parents’ efforts to give him and his twin sister a normal childhood.
Thomas’s story is unusual because it combines Hollywood fame with a medical incident that attracted widespread attention. Just 12 days after his birth, he and his twin sister survived a serious medication error involving Heparin at a Los Angeles hospital. Years later, Thomas has entered adulthood quietly, recently graduating from high school and preparing for college.
This article covers the major publicly known details about Thomas Boone Quaid, including his birth, parents, twin sister, siblings, childhood, medical emergency, education, college plans, and current life away from the spotlight.
Who Is Thomas Boone Quaid?
Thomas Boone Quaid is the son of actor Dennis Quaid and his former wife, real estate professional Kimberly Buffington. He was born on November 8, 2007, in Santa Monica, California, alongside his twin sister, Zoe Grace Quaid. The twins were born through a surrogate, with Thomas arriving just minutes before Zoe and weighing 6 pounds, 12 ounces.
Thomas became known to the public for two main reasons. First, he is part of the Quaid family and the son of a well-known Hollywood actor. Second, he survived a serious medical emergency when he was only 12 days old. The incident involved an accidental overdose of Heparin and later became part of a wider discussion about patient safety and preventable medical errors.
Unlike his older half-brother Jack Quaid, who followed his parents into acting, Thomas has not established a public career. He also has no known verified public social media accounts. His parents have largely protected him and Zoe from unnecessary media attention, allowing them to grow up outside the usual celebrity spotlight.
Thomas Boone Quaid Quick Bio
| Attribute | Details |
|---|---|
| Full Name | Thomas Boone Quaid |
| Date of Birth | November 8, 2007 |
| Age | 18 years old (as of 2026) |
| Place of Birth | Santa Monica, California, USA |
| Birth Weight | 6 pounds, 12 ounces |
| Parents | Dennis Quaid (Father) & Kimberly Buffington (Mother) |
| Siblings | Zoe Grace Quaid (Twin Sister), Jack Quaid (Older Half-Brother) |
| Famous For | Being Dennis Quaid’s son and surviving a 2007 Heparin overdose |
| Education | Oaks Christian School, Los Angeles (Graduated June 2026) |
| College | University of Colorado Boulder (Expected to attend) |
| Marital Status | Single |
| Children | None |
| Occupation | Student (No public career) |
| Net Worth | Not publicly available (minor, no personal income) |
| Social Media | None (No verified public accounts) |
| Public Presence | Maintains a strictly private life |
| Residence | Los Angeles, California |
Early Life and Family Background
Thomas Boone Quaid was born into a family with strong connections to both Hollywood and the business world. His father, Dennis Quaid, has enjoyed a decades-long acting career and is known for movies such as The Parent Trap, The Rookie, and The Day After Tomorrow. His mother, Kimberly Buffington, worked in real estate and has generally maintained a much lower public profile.
Thomas and his twin sister, Zoe, were born through a surrogate. Their arrival marked an important moment for the family, as Dennis Quaid and Kimberly Buffington welcomed the twins while continuing to build their family life away from the intense attention that often follows celebrity households.
However, their peaceful start was interrupted only 12 days later. Thomas and Zoe became seriously ill after receiving an incorrect dose of Heparin at Cedars-Sinai Medical Center in Los Angeles. The event became a major story because of the severity of the error and the fact that both infants survived.
The incident also influenced Dennis Quaid’s later advocacy around patient safety and medication errors. What began as a frightening experience for the family eventually became part of a broader public conversation about safeguards in hospitals.
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Who Are Thomas Boone Quaid’s Parents?
Thomas Boone Quaid’s parents are actor Dennis Quaid and real estate professional Kimberly Buffington. Although the twins were born through a surrogate, the source information identifies Dennis and Kimberly as their biological parents.
The couple married in 2004 and remained together for more than a decade before their divorce was finalized in 2018. Their relationship experienced several difficulties over the years, but both remained involved in raising Thomas and Zoe.
Dennis Quaid
Dennis Quaid is a well-known American actor whose career has continued for more than four decades. He has appeared in numerous popular movies, including The Parent Trap, The Rookie, and Pandorum. Quaid has been married four times, with his marriage to Kimberly Buffington being his third. He is also the father of actor Jack Quaid, whom he shares with actress Meg Ryan from their previous marriage.
Quaid has also spoken publicly about the frightening medical emergency involving his twins, Thomas and Zoe. The infants were mistakenly given 10,000 units of Heparin instead of the 10 units generally prescribed for babies. Quaid described the overdose as causing their blood to become extremely thin, leaving it with almost no ability to clot. The incident was deeply traumatic for the family and later encouraged Quaid to become an advocate for patient safety. He has used his public platform to highlight the risks of preventable medical mistakes and promote greater awareness of hospital safety.
More recently, Quaid became involved in another legal matter concerning his former wife and their children. After the twins graduated from high school, he filed a petition seeking to end his $13,750 monthly child-support payments to Kimberly Buffington. His filing reportedly pointed to their 2018 divorce agreement, which stated that the payments would conclude once the children completed 12th grade. Quaid also attended Thomas’s graduation at Oaks Christian School in Los Angeles on June 3, 2026. He was reportedly seen at the ceremony with Buffington, presenting a united family presence despite their previous marital difficulties.
Kimberly Buffington
Kimberly Buffington is a real estate professional who became widely known through her marriage to actor Dennis Quaid, making her his third wife. The couple tied the knot on July 4, 2004, but their marriage later went through a prolonged period of difficulties. They separated in 2016, and their divorce was officially completed in 2018. Even with her connection to a well-known Hollywood actor, Buffington has largely stayed away from public attention, especially regarding her family and children.
After the divorce, Buffington and Quaid continued to share parenting responsibilities for their twins, Thomas and Zoe. Reports have stated that Buffington has the children approximately 75% of the time, while Quaid’s demanding acting career limits the amount of time he can spend with them.
She has generally focused on providing the twins with a stable childhood away from the intense attention that often comes with having a famous parent. In a more recent child-support dispute, Buffington was reportedly served legal papers at her $3.8 million Los Angeles home on June 29, 2026, as the former couple continued dealing with the matter through legal channels.
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Thomas Boone Quaid and His Twin Sister, Zoe Grace
Thomas and Zoe Grace Quaid are twins who were born only minutes apart on November 8, 2007. Often referred to as the Quaid twins, they have shared many of the same experiences since birth, including the frightening medical emergency they faced just 12 days after being born. Both infants were accidentally given an excessive dose of Heparin, but thankfully, both survived without any apparent long-term health effects. Even so, the experience became a significant and lasting part of their family’s story.
Growing up, the twins were raised together in Los Angeles and attended the same prestigious schools. They both graduated from Oaks Christian School in 2026, with Zoe receiving her diploma on May 23 and Thomas graduating on June 3. Their reported plans after high school also took them in different directions.
Based on their social media accounts, Zoe is expected to attend the University of Virginia, while Thomas is set to enroll at the University of Colorado Boulder. Like their brother, Zoe has generally stayed away from the public spotlight and maintained a private life.
Their close connection as twins, along with their shared experience of surviving a serious medical emergency, remains an important part of their story. Throughout their upbringing, the Quaid family has placed a strong emphasis on protecting the twins’ privacy and giving them room to experience a relatively normal life away from the attention that often follows celebrity families. Although their father’s fame and occasional family-related news have brought some media interest, Thomas and Zoe have largely managed to keep their personal lives out of the public eye.
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Thomas Boone Quaid’s Siblings and Extended Family
Thomas has one well-known older half-brother, actor Jack Quaid. Jack is Dennis Quaid’s son from his previous marriage to actress Meg Ryan and was born in 1992.
Jack has followed his parents into the entertainment industry and has become known for roles in The Boys, The Hunger Games series, and other film and television projects. His career has placed him firmly in the public eye, creating a noticeable contrast with Thomas’s much more private upbringing.
Thomas and Jack have different experiences despite sharing the same father. Jack pursued acting and developed a public career, while Thomas has remained outside the entertainment industry and has not announced any comparable professional ambitions.
Thomas also has extended family members on both sides of his family, although information about those relationships has largely remained private. The Quaid family has generally kept attention focused away from the twins’ personal lives.
The Medical Incident That Put Thomas Boone Quaid in the Headlines
When Thomas and Zoe Grace were only 12 days old, they experienced a life-threatening medical emergency at Cedars-Sinai Medical Center in Los Angeles. The newborn twins were accidentally given 10,000 units of the blood thinner Heparin instead of the 10-unit dose intended for infants. That meant they received more than 1,000 times the recommended amount. The mistake was linked to confusion between nearly identical packaging used for adult and pediatric Heparin, with the medication reportedly being stored incorrectly before it was administered by a doctor.
The overdose had devastating effects on the two newborns. Dennis Quaid later described how the medication severely affected their ability to clot blood, leaving them bleeding from multiple puncture sites. The twins began “bleeding out” and were quickly moved into intensive care as doctors worked to save their lives.
Fortunately, medical staff discovered the medication error and treated the twins with protamine sulfate, a reversal drug that counteracts Heparin. The treatment successfully reversed the blood thinner’s effects. Cedars-Sinai Medical Center later apologized publicly and acknowledged that the incident was preventable and resulted from failures to follow its established safety procedures. The hospital and Los Angeles health authorities also investigated the incident, which received significant media attention and raised broader concerns about medication errors and patient safety in hospitals.
The Quaid family eventually reached a settlement with the hospital. After the experience, Dennis Quaid became an outspoken advocate for patient safety, publicly discussing the importance of stronger medication protocols and safeguards in healthcare. Although the overdose was an extremely traumatic experience for the family, the case also drew attention to serious medication-safety problems and helped highlight the importance of preventing similar errors from happening to other patients.
Thomas Boone Quaid’s Education and Life After High School
Thomas has kept much of his educational journey private, but it is known that he attended Oaks Christian School in Los Angeles. The private school is known for its prominent student body and high tuition, reportedly costing around $45,000 per year according to the source information.
Thomas graduated from the school on June 3, 2026. His graduation represented an important milestone as he moved from high school into adulthood.
Both of his parents were reportedly present at the graduation ceremony. Despite their ongoing legal dispute involving child support, Dennis Quaid and Kimberly Buffington appeared together to support their children. Dennis was also reportedly involved in the ceremony and delivered a commencement speech.
After high school, Thomas is expected to attend the University of Colorado Boulder. This represents one of the few publicly known details about his future because his family has continued to protect his personal life.
Beyond his college plans, little is known about what Thomas wants to study or what career he might eventually pursue. He has not publicly announced a professional direction.
What Is Known About Thomas Boone Quaid’s Life Today?
Thomas Boone Quaid is now 18 years old and has recently reached several major milestones. He graduated from high school in 2026 and is expected to begin college at the University of Colorado Boulder.
There is very little public information about his interests, friendships, future career, or everyday life. This limited coverage is largely the result of his family’s decision to keep him away from unnecessary media attention.
The most recent public attention surrounding Thomas has largely involved his parents rather than Thomas himself. In May 2026, Dennis Quaid reportedly filed a petition seeking to end his $13,750 monthly child-support payments to Kimberly Buffington after the twins completed high school.
The case was connected to the terms of the couple’s 2018 divorce agreement, which reportedly stated that the payments would end once the twins completed 12th grade. A hearing was scheduled for July 28, 2026.
For Thomas, however, the major personal development is his move into adulthood and higher education. His family continues to keep most details about his private life out of the media.
Why Thomas Boone Quaid Keeps a Private Life
Thomas Boone Quaid has no known verified social media accounts and rarely, if ever, appears publicly. This reflects the strong emphasis his family has placed on privacy while raising him and his twin sister, Zoe. After the twins’ serious medical emergency as infants, the Quaid family made efforts to shield them from unnecessary media attention and the intense scrutiny that can come with being the child of a Hollywood celebrity. Dennis Quaid has also spoken about the importance of allowing his children to grow up without feeling defined or pressured by their father’s public profile.
Public reports have generally described Thomas and Zoe as healthy and doing well as they have grown older. Their successful completion of high school in 2026 marked another important milestone and allowed the family to focus on their transition into adulthood rather than the traumatic events of their infancy.
Maintaining this level of privacy has given Thomas the opportunity to grow up largely outside his father’s fame. Although he was born into a well-known Hollywood family, he has not pursued celebrity status himself. His family’s continued efforts to respect his personal boundaries have allowed him to develop his own identity and move into adulthood largely on his own terms.
Frequently Asked Questions
1. How old is Thomas Boone Quaid?
Thomas Boone Quaid was born on November 8, 2007. He is 18 years old as of 2026.
2. Is Thomas Boone Quaid Dennis Quaid’s son?
Yes. Thomas Boone Quaid is the son of actor Dennis Quaid and his former wife, Kimberly Buffington.
3. Who is Thomas Boone Quaid’s mother?
Thomas’s mother is Kimberly Buffington, a real estate professional who was married to Dennis Quaid from 2004 until their divorce was finalized in 2018.
4. Does Thomas Boone Quaid have a twin sister?
Yes. Thomas has a twin sister named Zoe Grace Quaid. They were born on November 8, 2007, just minutes apart.
5. What happened to Thomas Boone Quaid as a baby?
When Thomas and his twin sister were 12 days old, they were accidentally given an extremely high dose of Heparin at Cedars-Sinai Medical Center in Los Angeles. The medication error created a life-threatening bleeding situation, but both infants survived after receiving emergency treatment.
6. Where is Thomas Boone Quaid going to college?
According to the source information, Thomas is expected to attend the University of Colorado Boulder after graduating from high school in 2026.
7. Are Thomas and his twin sister okay today?
According to the available information, Thomas and Zoe survived the medical emergency and have grown up successfully. Both graduated from high school in 2026, and the source states that they are healthy and doing well.
8. Why is Dennis Quaid in the news regarding Thomas?
Dennis Quaid made headlines in 2026 after reportedly filing a petition to end his $13,750 monthly child-support payments to Kimberly Buffington following the twins’ high school graduation. He cited the terms of their 2018 divorce agreement.
9. What school did Thomas Boone Quaid attend?
Thomas attended Oaks Christian School in Los Angeles and graduated in June 2026.
Conclusion
Thomas Boone Quaid has lived a remarkably private life despite being born into one of Hollywood’s better-known families. As the son of Dennis Quaid and Kimberly Buffington and the twin brother of Zoe Grace, he has always had a connection to celebrity culture, but his parents have worked to keep him away from its constant attention.
His childhood was marked by the terrifying Heparin medication error that nearly cost him and his twin sister their lives. Both survived the ordeal, and the experience later became part of Dennis Quaid’s advocacy for better patient safety and stronger safeguards against medical mistakes.
Now 18, Thomas has reached another important chapter. He graduated from Oaks Christian School in 2026 and is expected to begin college at the University of Colorado Boulder. While little is publicly known about his ambitions or future career, his story is no longer defined solely by his father’s fame or the medical emergency of his infancy.
Instead, Thomas Boone Quaid is entering adulthood with the opportunity to create his own path. His family continues to respect his privacy, and unless he chooses to step into the public eye himself, much of his future will likely remain his own.
