Thomas Boone Quaid: Dennis Quaid’s Son, a Medical Crisis, and a Private Life
Thomas Boone Quaid came into the world on November 8, 2007, in Santa Monica, California. He is the son of actor Dennis Quaid and real estate professional Kimberly Buffington. Within weeks of being born, he was at the center of one of the most widely reported infant medication errors in United States history.
He survived. His parents responded by taking that experience to Congress and courtrooms. Thomas himself has grown up quietly, away from the cameras that follow his father everywhere.
Quick Bio Facts
| Detail | Information |
| Full Name | Thomas Boone Quaid |
| Date of Birth | November 8, 2007 |
| Birthplace | Santa Monica, California, USA |
| Age (as of 2026) | 18 |
| Birth Method | Gestational surrogacy |
| Twin Sister | Zoe Grace Quaid |
| Father | Dennis Quaid (actor) |
| Mother | Kimberly Buffington (real estate professional) |
| Half-Brother | Jack Quaid (actor, born 1992) |
| Nationality | American |
| Career | None confirmed publicly |
| Social Media | None verified |
| Net Worth | Not independently established |
Early Life and Birth
Dennis Quaid and Kimberly Buffington married in 2004. After several miscarriages, the couple turned to gestational surrogacy to start a family. Thomas and his twin sister Zoe Grace were born together at St. John’s Health Center in Santa Monica.
Thomas weighed around six pounds at birth. Both twins were considered healthy in their first days of life.
The family was happy. But that changed quickly.
The Medical Crisis That Made National News
A few weeks after birth, both Thomas and Zoe developed staph infections. They were admitted to Cedars-Sinai Medical Center in Los Angeles for treatment.
While there, nurses gave them heparin — a blood-thinning drug — to keep their IV lines clear. The dose given was 10,000 units. The correct dose for newborns was 10 units. That is a difference of one thousand times the safe amount.
The error happened because two Baxter Healthcare products — heparin and heplock — came in bottles with nearly identical blue labels. Hospital staff picked up the wrong vial.
Dennis Quaid later said the twins spent about 41 hours with their lives in serious danger. Medical staff gave them a drug that reverses the effects of heparin. Both children survived.
A third infant at Cedars-Sinai received the same overdose and also survived. The same type of mistake had killed three premature babies at an Indianapolis hospital the year before.
What the Hospital and the State Found
Cedars-Sinai publicly admitted fault. The hospital’s chief medical officer called it a preventable error and said staff had failed to follow standard procedures.
California state health regulators investigated and released a 20-page report. It found that pharmacy technicians and nurses did not check product labels before giving the drug. Record-keeping for medication times was also incomplete. The state cited Cedars-Sinai for putting patients at risk of serious harm or death.
The hospital was fined $25,000. That fine was paid.
The Lawsuit Against Baxter Healthcare
Dennis and Kimberly Quaid did not sue Cedars-Sinai directly. Instead, they filed a lawsuit against Baxter Healthcare, the company that made both versions of the drug.
The suit claimed that Baxter’s nearly identical packaging was the core problem. Both the adult-strength heparin and the infant-safe heplock came in similarly shaped bottles with similar blue labels. The suit asked for $50,000 — a small amount by Hollywood standards.
Dennis Quaid’s attorney made clear the case was not about money. The Quaids wanted Baxter to change the packaging so the same mistake could not happen to other children.
A year before the Quaid twins’ overdose, Baxter had already sent safety alerts to hospitals after the Indianapolis deaths. The company had not changed the labels or issued any recall.
Dennis Quaid’s Advocacy Work
After the twins recovered, Dennis Quaid became a public voice on hospital safety. He spoke at the National Press Club in Washington. He addressed lawmakers and health officials.
He said that an estimated 1.5 million people in the United States are harmed by medication errors each year. He argued that many of those cases are preventable with better labeling, better procedures, and better staff training.
He brought the same message to multiple public forums over several years. His goal was to push for systemic changes in how hospitals handle drugs, not just to tell his own family’s story.
His Parents’ Background
Dennis Quaid was born in 1950 in Houston, Texas. He has had a long career in Hollywood, appearing in films including The Right Stuff, The Parent Trap, Frequency, The Rookie, and many others. He was previously married to actress Meg Ryan from 1991 to 2001, and they have a son together, Jack Quaid.
Dennis Quaid married Kimberly Buffington in 2004. The two later divorced. He has since remarried.
Kimberly Buffington works in real estate. She has kept a lower profile than Dennis throughout their time in the public eye. After the divorce, she became the primary caregiver for Thomas and Zoe during their earlier years, though both parents remained involved.
Half-Brother Jack Quaid
Thomas has an older half-brother, Jack Quaid, born on April 24, 1992, to Dennis Quaid and actress Meg Ryan.
Jack Quaid is an actor. He is perhaps best known for playing Hughie Campbell in the Amazon series The Boys. He also had a role in The Hunger Games film series.
Jack and Thomas are about 15 years apart in age. They share a father but grew up in very different circumstances.
Twin Sister Zoe Grace
Thomas and his sister Zoe Grace were born minutes apart on the same day. They went through the same medical emergency as infants and have grown up together.
Zoe also lives a private life. Very little public information exists about her day-to-day activities. In 2025, Dennis Quaid mentioned in an interview that Zoe was working as a camp counselor in Texas. She was near but unaffected by flooding that hit the area around Camp Mystic.
Both twins are described by those close to the family as grounded and independent young people.
Education and Personal Interests
Thomas has spent most of his life in California. He attended school there and kept his academic life out of the public eye.
He is now 18, which means he has likely graduated or is finishing high school as of 2026. No college enrollment has been publicly confirmed.
Sources close to the family have described him as having interests in music and photography. These are informal observations rather than confirmed facts. No public records of awards, enrollments, or projects exist.
Physical Appearance
Thomas is described as tall, with reports estimating his height at around 5 feet 10 inches as of 2025. He is said to have a lean build similar to his father.
Hair and eye color descriptions vary slightly across different sources — some say light brown hair with hazel eyes, others say blonde hair and green eyes. No official or verified physical description exists.
Career and Public Life
Thomas Boone Quaid has no acting credits, no confirmed career in entertainment, and no verified social media accounts as of 2026.
Some unofficial fan profiles use his name online, but none are confirmed to be his. He has not given any public interviews or made any formal public appearances on his own.
His father has been photographed with him at a small number of family events over the years, but Thomas has not sought or received individual media coverage.
Whether he will pursue entertainment, business, or another field entirely is unknown.
Net Worth
Thomas Boone Quaid has no independently earned income on public record. He is 18 years old and has not worked in any confirmed professional capacity.
His father Dennis Quaid has an estimated net worth of around $30 to $40 million based on decades of acting work. Thomas would benefit from family financial security, but has no personal net worth figure attached to him.
Privacy as a Choice
Both of Thomas’s parents have kept him out of the media since he was a newborn. That choice appears to have continued through his teenage years and into adulthood.
He does not use social media publicly. He does not attend red carpet events alone. He has not appeared in interviews.
This kind of distance from the spotlight is uncommon for children of highly famous actors. It appears to reflect a deliberate decision made by his family — and one Thomas has continued to honor as he has grown older.
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Frequently Asked Questions (FAQ)
1. Who is Thomas Boone Quaid?
He is the son of actor Dennis Quaid and Kimberly Buffington. He was born on November 8, 2007, in Santa Monica, California.
2. Does Thomas Boone Quaid have a twin?
Yes. His twin sister is Zoe Grace Quaid. They were born on the same day via gestational surrogacy.
3. What happened to Thomas Boone Quaid as a newborn?
At about two weeks old, he and his twin sister were accidentally given 1,000 times the correct dose of the blood-thinning drug heparin at Cedars-Sinai Medical Center. Both survived after emergency treatment.
4. Who was responsible for the overdose?
The California Department of Public Health found that Cedars-Sinai staff failed to follow proper medication procedures. The hospital admitted the error. The Quaids also sued drug manufacturer Baxter Healthcare over nearly identical product packaging.
5. What did Dennis Quaid do after the incident?
He became an advocate for hospital safety. He spoke before lawmakers and health officials and publicly pushed for changes in drug labeling and hospital procedures.
6. Who is Thomas Boone Quaid’s half-brother?
Jack Quaid, born in 1992 to Dennis Quaid and actress Meg Ryan. Jack is a working actor known for The Boys television series.
7. Has Thomas Boone Quaid appeared in any films or TV shows?
No. As of 2026, there are no acting credits attached to his name.
8. Is Thomas Boone Quaid on social media?
No verified accounts belong to him. He keeps a fully private life.
9. How old is Thomas Boone Quaid in 2026?
He turned 18 in November 2025, making him 18 years old as of 2026.
10. What are Thomas Boone Quaid’s parents doing now?
Dennis Quaid continues to act and is remarried. Kimberly Buffington has continued her work in real estate. Both remain involved in their children’s lives.
11. What is Thomas Boone Quaid’s net worth?
He has no independently documented income. His father Dennis Quaid has an estimated net worth of around $30–40 million.
12. Does Thomas plan to become an actor like his father and half-brother?
There is no confirmed information that he is pursuing acting or any entertainment career.
