Thomas Quaid: Dennis Quaid's Son, Age, Twin Sister, and Verified Facts

Thomas Quaid, whose full name is Thomas Boone Quaid, is the son of actor Dennis Quaid and Kimberly Buffington. He was born on November 8, 2007, alongside his twin sister, Zoe Grace. Most people know his name from a 2007 hospital error that made national news. Many online profiles add details about his schooling, health, and future plans with no source behind them.

This guide sticks to what news reports and reference works confirm. It covers his age, parents, twin sister, half-brother, the newborn hospital incident, and his net worth. He is a private young adult, so we label every weak claim and leave out anything unsourced.

Who Is Thomas Quaid?

Thomas Quaid is the son of Dennis Quaid and Kimberly Buffington, and he has grown up away from the public eye. An AARP profile of his father says he is known as T. Boone.

He has no known acting career and no public social media presence that we could verify. His name appears in the news because of his famous father and his half-brother Jack Quaid. It also appears because of a hospital incident when he was a baby. Almost everything else written about him online comes from short biography pages that copy one another.

How Old Is Thomas Quaid?

Thomas Quaid is 18 years old today. He was born on November 8, 2007, so he turns 19 on November 8, 2026.

The Associated Press reported his birth date at the time of the 2007 hospital story. One early report gave November 12, but the AP and later reports used November 8. We follow the AP. A few pages also give a birth time of 8:26 a.m., which comes from a People magazine report quoted by Access Hollywood.

When and Where Was Thomas Quaid Born?

Thomas Quaid was born on November 8, 2007, to a surrogate mother. The AP reported that Dennis Quaid and Kimberly Buffington are the twins' biological parents.

Several biography pages say he was born in Santa Monica, California. We could not confirm that in a news report, so we treat the birthplace as reported. Access Hollywood said he weighed 6 pounds, 12 ounces at birth. His sister arrived two minutes later at 5 pounds, 9 ounces.

Who Are Thomas Quaid's Parents?

Thomas Quaid's parents are actor Dennis Quaid and real estate agent Kimberly Buffington. AARP reports that they met in 2003 and married in 2004.

Dennis Quaid is known for films such as The Right Stuff, Innerspace, and The Parent Trap. Kimberly Buffington worked as a real estate agent in Austin, Texas. Several pages now describe her as Dennis's former wife, so the couple is reported to be divorced. We found no verified detail about the terms, and we do not repeat unsourced claims about it.

Who Is Thomas Quaid's Twin Sister?

Thomas Quaid's twin sister is Zoe Grace Quaid. She was born two minutes after him, according to Access Hollywood.

The twins went through the same hospital incident as newborns. Their parents stayed at their bedsides for more than a day, AARP reports. Beyond that, we found no verified details about Zoe's own life, and we leave her private life alone as well.

How Is Thomas Quaid Related to Jack Quaid?

Jack Quaid is Thomas Quaid's older half-brother. They share the same father, Dennis Quaid, while Jack's mother is actress Meg Ryan.

Jack Quaid was born on April 24, 1992, in Los Angeles. He is the only child of Dennis Quaid and Meg Ryan, according to Wikipedia, and he is a working actor. That means Thomas has an actor brother, but the two have followed different paths so far. We found no verified interview in which either brother discusses the other.

How Is Thomas Quaid Related to Randy Quaid?

Randy Quaid is Thomas Quaid's uncle. Randy is Dennis Quaid's older brother, and both grew up in Houston, Texas.

Their father, William Rudy Quaid, worked as an electrician, and their mother, Juanita, worked as a real estate agent. Wikipedia says Randy is a first cousin, twice removed, of singing cowboy Gene Autry. Jack Quaid's page lists Autry as a first cousin three times removed, which makes Thomas the same distance. That cousin link sounds dramatic, but it is distant.

What Happened to Thomas Quaid as a Newborn?

Thomas Quaid and his twin sister received an accidental overdose of the blood thinner heparin in November 2007. It happened at Cedars-Sinai Medical Center in Los Angeles. They were less than two weeks old and were being treated for staph infections.

Heparin is used to keep IV lines from clotting. The twins received doses 1,000 times stronger than prescribed, according to the AP and ABC News. The hospital called it a preventable error and apologized. Doctors gave the babies a drug to reverse the effects, and the hospital said early tests showed no adverse effects. The twins later went home.

The case changed how his father spoke about hospital safety. Pages report that Dennis Quaid and Kimberly Buffington later founded the Quaid Foundation, which focuses on patient safety. Access Hollywood also reported a $750,000 settlement between the hospital and the parents in 2008. That settlement involved the parents, not Thomas himself. We found no verified information about his health today, and we do not guess.

Is Thomas Quaid an Actor or Does He Have a Career?

No source confirms that Thomas Quaid has an acting career or any other public career. Several biography pages say he has not acted in any known film.

One page says he plans to attend a particular college, and another describes his school life. None cite a statement from him or his family. He became an adult in November 2025, and a private person deserves the choice of what to share. We do not repeat school or location claims.

What Is Thomas Quaid's Net Worth?

Thomas Quaid's net worth is not publicly known. No verified source reports his income, assets, or any trust.

His father's wealth is a separate matter, and a parent's earnings do not create a child's net worth. One page ties a child support figure to his family in 2026, but the claim does not cite a record. Any dollar figure attached to Thomas is a guess, and we chose not to print one.

Which Facts About Thomas Quaid Can You Trust?

Four facts hold up best. He is the son of Dennis Quaid and Kimberly Buffington, and he has a twin sister named Zoe Grace. He is the half-brother of Jack Quaid. He was born on November 8, 2007, and the newborn heparin overdose at Cedars-Sinai is well documented.

Several details stay unconfirmed. These include his birthplace, his schooling, his plans after high school, and his life today. Many top results are near-copies of one another, so a repeated claim is not a confirmed claim.

The best checks are major news archives from 2007, interviews with his father, and reference works on the Quaid family. If a page cannot point to one of those, treat its details with caution.

What Else Do People Ask About Thomas Quaid?

Who is Thomas Quaid?

Thomas Quaid is the son of actor Dennis Quaid and Kimberly Buffington, and the twin brother of Zoe Grace Quaid.

How old is Thomas Quaid?

He is 18. He was born on November 8, 2007, and turns 19 on November 8, 2026.

Is Thomas Quaid related to Jack Quaid?

Yes. Jack Quaid is his older half-brother, and they share the same father, Dennis Quaid.

Is Thomas Quaid related to Randy Quaid?

Yes. Randy Quaid is his uncle, because Randy is Dennis Quaid's older brother.

What Should You Remember About Thomas Quaid?

Thomas Quaid is Dennis Quaid's son, born on November 8, 2007, with a twin sister named Zoe Grace. His family ties and the newborn hospital incident are the best-documented parts of his story.

His schooling, birthplace, health today, and net worth rest on weak or missing sources, so treat them with care. He has stayed private, and respectful coverage should leave his life alone. When you share his story, link to major news reports and say where the evidence stops.