Thomas Boone Quaid is the son of actor Dennis Quaid and real estate professional Kimberly Buffington, born on November 8, 2007, in Santa Monica, California. He is best known as one of the Quaid twins, who survived a frightening hospital medication error at 12 days old.
People search for him to learn his age, family, education, and what he is doing now. As of 2026, he is 18, a recent graduate of Oaks Christian School, and expected to attend the University of Colorado Boulder.
He keeps no public career and no verified social media. He lives in Los Angeles. This guide covers his family, medical story, schooling, and private life in clear, simple facts.
Who Is Thomas Boone Quaid?
Thomas Boone Quaid is an American young adult and a celebrity child, meaning he is known mainly because of his famous father. Dennis Quaid is a Hollywood actor with a career of more than 40 years. Thomas is also known as one half of the Quaid twins, alongside his sister Zoe Grace Quaid.
Unlike many children of famous parents, Thomas has not chosen a public path. He is a student with no public career, no public appearances, and no verified social media accounts. Most of what is known about him comes from his family’s public history and a few news events.
Thomas Boone Quaid Quick Bio
| Detail | Information |
| 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 |
| Birth Method | Surrogate |
| Father | Dennis Quaid |
| Mother | Kimberly Buffington |
| Twin Sister | Zoe Grace Quaid |
| Older Half-Brother | Jack Quaid |
| High School | Oaks Christian School, Los Angeles |
| High School Graduation | June 3, 2026 |
| Expected College | University of Colorado Boulder |
| Marital Status | Single |
| Children | None |
| Occupation | Student (no public career) |
| Net Worth | Not publicly available |
| Social Media | None verified |
| Residence | Los Angeles, California |
Early Life and Family Background
Thomas was born in Santa Monica, California, and weighed 6 pounds, 12 ounces at birth. He and his twin sister were born through a surrogate, a woman who carries a baby for the intended parents. This was a twin birth, and both children arrived on the same day.
His Hollywood upbringing was shaped by his father’s acting career, yet his family worked to protect his privacy. He grew up in Los Angeles, attended a private school, and stayed away from the spotlight. Important parts of his early life include:
- A birth in Santa Monica in 2007
- A surrogate birth with a twin sister
- A close-knit, private family
- A normal upbringing with limited media attention
Who Are Thomas Boone Quaid’s Parents?
Thomas’s parents are Dennis Quaid and Kimberly Buffington. They married in 2004 and separated in 2016, and their divorce was finalized in 2018. Since then, they have followed a co-parenting arrangement, where both parents share the raising of their children.
Dennis Quaid
Dennis Quaid is an American actor known for films such as The Right Stuff, The Parent Trap, and The Day After Tomorrow. He has worked in film and television for more than 40 years.
Besides acting, he became a voice for patient safety after his children’s medical emergency in 2007. Dennis also has an older son, Jack Quaid, from his previous marriage to actress Meg Ryan.
Kimberly Buffington
Kimberly Buffington is a real estate professional based in Los Angeles. She has kept a much lower public profile than her former husband. Reports say that after the divorce she had a joint custody arrangement and that the children spent most of their time with her. She is a central figure in Thomas’s day-to-day life.
Thomas Boone Quaid and His Twin Sister, Zoe Grace
Zoe Grace Quaid is Thomas’s twin sister, born on the same day, November 8, 2007. The two are often called the Quaid twins in news stories. They share the same parents, the same early story, and many of the same milestones.
Zoe graduated from high school on May 23, 2026, and is expected to attend the University of Virginia, a public university in Charlottesville. Like her brother, she keeps a private life. The twins will likely follow different college paths, which marks a new stage as each builds an independent identity.
Thomas Boone Quaid’s Siblings and Extended Family
Thomas has one older half-brother, Jack Quaid, born in 1992. Jack is an actor and the son of Dennis Quaid and Meg Ryan. Meg Ryan is an American actress famous for romantic comedies such as When Harry Met Sally. Because Thomas and Jack share a father, they are half-brothers.
Thomas’s extended family is part of a well-known Hollywood family, but few details about cousins, grandparents, or other relatives are public. This fits with his family commitment to privacy.
The Medical Incident That Put Thomas Boone Quaid in the Headlines
When Thomas and Zoe were 12 days old, in November 2007, they were treated at Cedars-Sinai Medical Center, a major Los Angeles hospital. The babies were given a wrong dose of Heparin, a blood thinner used to keep medical lines clear and prevent blood clotting.
The correct infant dose was 10 units, but the twins received 10,000 units, an adult-sized Heparin dose. That is about 1,000 times the right amount. It was a serious hospital medication error and a clear case of an incorrect medication dosage.
The key steps of the event were:
- The twins received the wrong, adult-sized dose of Heparin at 12 days old.
- Doctors noticed the problem and moved them into intensive care.
- They were given protamine sulfate, a medicine that reverses the effects of Heparin.
- Both babies recovered, and there are no apparent lingering health effects.
The event became a survival story and drew wide attention to patient safety and preventable medical errors. Dennis Quaid spoke publicly about the case and became an advocate for hospital safety awareness. The family also reached a settlement with the hospital, and the case led to more medical error investigations and better safety checks in many hospitals.
Thomas Boone Quaid’s Education and Life After High School
Thomas attended Oaks Christian School in Los Angeles, a private school. His high school graduation took place on June 3, 2026. The school is reported to cost about $45,000 a year, which shows the family’s focus on private school education.
After graduating, Thomas is expected to attend the University of Colorado Boulder. This marks his transition to adulthood and a new life as a college student. Details about his major or future career aspirations are not publicly known, and his education is kept private.
What Is Known About Thomas Boone Quaid’s Life Today?
In 2026, Thomas is a young adult who recently finished high school. He has no public career and no personal income, so his net worth is not publicly available. He lives in Los Angeles and is preparing for college.
Key facts about his present life include:
- He is single and has no children
- He has no verified social media accounts
- He makes no public appearances
- His future plans stay private
Anything beyond these facts, such as hobbies or interests, is not confirmed, so readers should treat unverified claims carefully.
Why Thomas Boone Quaid Keeps a Private Life
Thomas lives away from the spotlight because his family has chosen privacy. His early medical emergency drew a lot of attention, and his parents likely wanted him to grow up with a normal upbringing.
There are a few clear reasons for his private choices:
- His parents protected him from media attention as a child.
- He has no career that needs a public image.
- Staying off social media helps him build an independent identity.
By avoiding public events, he can enjoy a young adult life much like any other student.
Frequently Asked Questions
1. How old is Thomas Boone Quaid?
Thomas Boone Quaid is 18 years old as of 2026. He was born on November 8, 2007.
2. Is Thomas Boone Quaid Dennis Quaid’s son?
Yes. He is the son of actor Dennis Quaid and Kimberly Buffington, and he has a twin sister, Zoe Grace.
3. Who is Thomas Boone Quaid’s mother?
His mother is Kimberly Buffington, a real estate professional from Los Angeles. She was married to Dennis Quaid from 2004, and their divorce was finalized in 2018.
4. Does Thomas Boone Quaid have a twin sister?
Yes. His twin sister is Zoe Grace Quaid, born on the same day. She graduated high school in May 2026 and is expected to attend the University of Virginia.
5. What happened to Thomas Boone Quaid as a baby?
At 12 days old in 2007, he and his sister received a Heparin overdose at Cedars-Sinai Medical Center. They were treated in intensive care and recovered.
6. Where is Thomas Boone Quaid going to college?
He is expected to attend the University of Colorado Boulder. His college plans have not been officially confirmed by the family.
7. Are Thomas and his twin sister okay today?
Yes. Both twins recovered, and there are no apparent lingering health effects. They have grown up and finished high school in 2026.
8. Why is Dennis Quaid in the news regarding Thomas?
Reports say Dennis Quaid filed a petition in May 2026 to end monthly child support of $13,750 after Thomas finished high school. A hearing was scheduled for July 28, 2026, and the final outcome is not confirmed here.
9. What school did Thomas Boone Quaid attend?
He attended Oaks Christian School in Los Angeles, where he graduated on June 3, 2026.
Conclusion
Thomas Boone Quaid is a young adult whose story began with a famous family, a surrogate birth, and a serious medical emergency that he survived at 12 days old. Today, he is a recent high school graduate, expected to start college at the University of Colorado Boulder. With no public career, no verified social media, and a strong family focus on privacy, he is building his own identity in 2026, away from the spotlight.
Rory Mitchell is a celebrity content writer at Megazin ABC who researches public figures, career journeys, achievements, lifestyle, and publicly reported net worth information. Rory focuses on clear, engaging, and responsibly researched articles, using credible public sources and careful fact checking to help readers understand celebrity stories with useful context and balanced reporting.