Thomas Boone Quaid is the son of actor Dennis Quaid and Kimberly Buffington. He is also the twin brother of Zoe Grace Quaid. Thomas was born on November 8, 2007. He is 18 as of September 2026. This year, he finished high school in Los Angeles and started college at the University of Colorado Boulder.
In this article, you’ll learn about Thomas’s birth, twin sister, family, early health scare, high school graduation, college move, and life in 2026. You’ll also see how his path is different from that of his older half-brother, actor Jack Quaid.
Born With Twin Sister Zoe Grace
Thomas and Zoe were born on the same morning in 2007. Their parents welcomed them through a gestational carrier.
Thomas arrived first at 8:26 a.m. He weighed 6 pounds, 12 ounces. Zoe came two minutes later and weighed 5 pounds, 9 ounces.
Dennis and Kimberly later told Congress that the twins were born four weeks early. Both babies were healthy enough to go home after three days.
For the new parents, that first week brought relief and joy. Then, less than two weeks after birth, the family faced a serious health scare.
The Hospital Crisis in 2007
When the twins were 11 days old, their parents saw signs of irritation. Thomas had a problem near his belly button. Zoe had a problem on one finger.
A doctor sent both babies to Cedars-Sinai Medical Center in Los Angeles. Tests showed staph infections. The twins were admitted so they could get medicine through an IV.
During that stay, a major mistake happened. The babies were given 10,000 units of the blood thinner heparin instead of the planned 10-unit dose.
In testimony before a U.S. House committee, Dennis and Kimberly said this was 1,000 times the dose the babies should have received. The twins then got another high dose later that day.
The mistake put both babies in grave danger. Doctors treated them, and the children recovered.
By early December 2007, Thomas and Zoe were home again.
How the Crisis Changed the Family
The hospital mistake did not end when the twins went home.
Dennis and Kimberly spoke before Congress in May 2008. They shared what had happened and called for safer drug labels and better steps to stop medical errors.
The Los Angeles Times later reported that state inspectors found several safety failures at the hospital. Cedars-Sinai changed parts of its process after the case.
Dennis also helped start the Quaid Foundation. Its work focused on patient safety and medical mistakes.
Thomas was still a baby during all of this. He did not grow up as a public voice for the case. His parents carried that role.
His Parents and Family
Thomas is one of Dennis Quaid’s three children.
His mother, Kimberly Buffington, married Dennis in 2004. Their twins arrived three years later. Dennis and Kimberly later divorced in 2018.
Both parents stayed part of the twins’ lives after the split. That was clear again in June 2026, when they both came to Thomas’s high school graduation.
Dennis’s current wife, Laura Savoie, was also there.
Thomas also has an older half-brother, Jack Quaid. Jack is Dennis’s son with actress Meg Ryan.
Jack was born in 1992. He later became an actor and built a career in films and TV.
A Different Path From Jack Quaid
Thomas grew up in a family full of film ties. His father is an actor. His half-brother is an actor. Meg Ryan, Jack’s mother, is also a major film star.
Even so, Thomas has not followed them into acting.
There is no known film or TV career for him as of September 2026. His public life has stayed much smaller than Jack’s.
That difference matters. Thomas may share a famous last name, but he has not built his identity around Hollywood.
A Mostly Private Childhood
Dennis has talked about being a father, but he rarely shared many details about the twins while they were growing up.
Thomas did not become a child actor. He did not join a reality show. He also did not build a large public brand as a teenager.
Most of his childhood stayed away from daily news.
That gave him a much more private life than many children of famous actors. Photos appeared from time to time, but long interviews and regular public updates were rare.
High School Graduation in 2026
Thomas reached a major milestone on June 3, 2026, when he graduated from high school in Los Angeles.
His family came together for the day. Dennis and Kimberly attended, and Zoe was there as well. Laura Savoie joined Dennis at the event.
Dennis also spoke at the graduation.
The day marked the end of one part of Thomas’s life. It also came just before he left California for college.
Why His Graduation Made News
Thomas’s graduation also had a legal link to his parents’ old divorce deal.
In May 2026, Dennis asked a Los Angeles court to end his $13,750 monthly child-support payments after the twins finished high school.
The 2018 divorce agreement tied those payments to certain points in the twins’ lives, including the end of high school.
This was a matter between the parents. It was not Thomas’s income or personal wealth.
College at Colorado Boulder
After high school, Thomas moved on to college.
People reported that he is attending the University of Colorado Boulder. Zoe chose a different school and went to the University of Virginia.
Dennis later spoke about dropping both twins off at college. He said the change was emotional.
For Thomas, the move is his clearest public update in 2026. He is now living away from home and starting adult life as a college student.
Thomas has not made his field of study public in major news reports. There is also no firm public career plan tied to him.
His Bond With Zoe
Thomas and Zoe have shared many big moments.
They were born on the same day. They went through the same hospital crisis. They grew up in the same family and finished high school in the same year.
Now they are in different states for college.
Thomas is in Colorado. Zoe is in Virginia.
That change gives each twin more room to build a life of their own. It also marks a new stage after years of shared family milestones.
Does Thomas Want to Be an Actor?
There is no public acting career for Thomas right now.
His father and brother work in film and TV, so the question is easy to understand. Still, Thomas has not announced a plan to act.
No major film, TV, or stage credit is linked to him.
His current path is college. Anything beyond that would be a guess.
What Is Thomas Boone Quaid’s Net Worth?
Thomas does not have a public net-worth figure backed by strong reporting.
He is an 18-year-old college student. He has no widely reported job, company, or paid entertainment career.
His father’s money is not Thomas’s net worth. The child-support deal between his parents is not his net worth either.
So an exact dollar figure for Thomas would not be useful or fair.
Where Thomas Boone Quaid Is Today
As of September 2026, Thomas is 18 and attending college in Colorado.
He has finished high school and moved into a new stage of life. He is no longer known only as one of Dennis Quaid’s young twins.
His early life had a serious health crisis. His teen years were much quieter. Now his story is about school, family, and the start of adult life.
Dennis has said he is proud of all three of his children. He also said that taking the twins to college was emotional.
For Thomas, the next chapter is still open.
Growing Up With a Famous Name
Thomas Boone Quaid grew up close to Hollywood without becoming a public star himself.
He was born into a famous family and survived a major medical mistake as a newborn. His parents later used that event to push for safer care.
Thomas then spent most of his childhood away from constant press. In 2026, he graduated from high school and started college at Colorado Boulder.
At 18, he has not announced an acting career, business, or public brand. He is simply starting adult life on his own terms.
Want another profile about a famous actor’s son who grew up largely outside the spotlight? Read our story on Kian William Jarrahy, Geena Davis’s private twin son.
