Zoe Grace Quaid is the daughter of actor Dennis Quaid and real estate professional Kimberly Buffington. She was born in Santa Monica, California, on November 8, 2007, two minutes after her twin brother, Thomas Boone Quaid. Her older half-brother is actor Jack Quaid.

Zoe entered the public record after she and Thomas survived a severe Heparin overdose at Cedars-Sinai Medical Center as newborns. She later attended the 2024 Reagan premiere and worked at a Texas summer camp during the 2025 floods. Now 18, she graduated from high school in 2026 and plans to attend the University of Virginia.

Who Is Zoe Grace Quaid?

Zoe Grace Quaid Profile Summary

Zoe is an American young adult from a well-known Hollywood family. Unlike her father and half-brother, she has maintained a low-profile lifestyle rather than building a public entertainment career.

Why Zoe Grace Quaid Is Publicly Known

Most public interest in Zoe comes from three documented events. The first was the newborn Heparin overdose that led Dennis Quaid to support patient-safety reform. The second was her appearance at the Reagan premiere in 2024. The third was the concern for her safety during the 2025 Texas floods.

Birth, Surrogacy, and Early Life

Birth Date, Place, and Twin Brother

Thomas Boone Quaid was born at 8:26 a.m. on November 8, 2007. He weighed 6 pounds, 12 ounces. Zoe arrived two minutes later and weighed 5 pounds, 9 ounces.

The twins were born in Santa Monica, California. Dennis Quaid and Kimberly Buffington welcomed them into their family shortly afterward.

Gestational Carrier and Family Planning

Zoe and Thomas were born through a gestational carrier. In gestational surrogacy, an embryo from the intended parents or donors is placed in a carrier who has no genetic connection to the baby.

Dennis and Kimberly publicly confirmed this method of family planning. Private medical reasons behind the decision have not formed part of Zoe’s verified biography.

Family Background and Relationships

Dennis Quaid

Dennis Quaid is an American film and television actor. His early success included Breaking Away and The Right Stuff. He later appeared in Great Balls of Fire! and Dragonheart.

Family audiences may know him from The Parent Trap. Other major projects include The Day After Tomorrow, Soul Surfer, Vegas, and Reagan.

Dennis has described school drop-offs and breakfast conversations as valuable parts of fatherhood. The twins’ medical crisis also made patient safety a major part of his public work.

Kimberly Buffington

Kimberly Buffington is Zoe’s mother and worked in real estate. She raised Zoe and Thomas with Dennis during their marriage and continued sharing parenting duties after their divorce.

Kimberly played an active role during the twins’ hospital emergency. She later joined Dennis in legal action connected to the medication error.

Thomas Boone Quaid

Thomas Boone is Zoe’s fraternal twin brother. He was born two minutes before her and experienced the same hospital emergency during infancy.

The twins shared birthdays, school years, family milestones, and their 2026 transition into adulthood. Thomas plans to study at the University of Colorado Boulder.

Jack Quaid and the Extended Family

Jack Quaid is Zoe’s older half-brother. Dennis welcomed Jack with actress Meg Ryan in 1992.

Jack built an acting career through projects such as The Hunger Games and The Boys. His professional credits should not be confused with Zoe’s public profile. Actor Randy Quaid is part of the wider Quaid family as Dennis’s brother.

Her Parents’ Marriage, Divorce, and Co-Parenting

Dennis Quaid and Kimberly Buffington married on July 4, 2004. Kimberly first filed for divorce in March 2012, but the couple later reconciled.

They announced another separation in June 2016 and finalized their divorce in 2018. Their agreement covered legal custody, physical custody, and financial support for the twins. Dennis married Laura Savoie in 2020.

Growing Up Outside the Hollywood Spotlight

Privacy and Family Boundaries

Zoe grew up in a celebrity family but had limited media exposure. Dennis rarely discussed the twins in detail, and their public appearances remained uncommon.

This private upbringing kept ordinary parts of her childhood, including friendships and personal development, outside public scrutiny.

Schooling and Education

Public information about Zoe’s earlier schooling remains limited. Dennis stated that the twins performed well in school after recovering from their medical crisis.

Zoe completed 12th grade in 2026. Her graduation marked the end of high school and the start of her university education.

Social Media and Online Privacy

Zoe has kept a small online presence compared with many celebrity children. Her public activity has focused more on family milestones and education than entertainment work.

Her 2026 graduation and University of Virginia plans became visible through her social media activity. Fan pages and people with similar names should not be treated as her official accounts.

The 2007 Heparin Overdose

Why the Twins Were Hospitalized

Days after their birth, Zoe and Thomas developed staph infections near their umbilical cords. Doctors admitted both newborns to Cedars-Sinai Medical Center in Los Angeles.

The twins received intravenous lines during treatment. Heparin was used to help keep those lines from becoming blocked by blood clots.

What Went Wrong with the Heparin Dose

The prescribed infant dose was 10 units of Heparin. The twins instead received 10,000 units, which was 1,000 times the intended amount.

Hospital staff administered the high-concentration blood thinner twice. Similar packaging and failed dosage checks contributed to the medication error.

Medical Risk, Emergency Treatment, and Recovery

Heparin reduces blood clotting. A massive overdose can cause uncontrolled bleeding and place an infant’s life in immediate danger.

Doctors placed the twins under close hospital monitoring and used protamine to reverse the drug’s effects. Both babies spent days receiving emergency care before making a full recovery in early December 2007.

Medication-Safety Failures Behind the Incident

The case involved more than one human mistake. The adult-strength vials were stored incorrectly, and staff failed to verify the concentration before giving the medicine.

The incident also raised concerns about similar labels on adult and pediatric Heparin packaging. Bedside barcode checks could have matched the medicine, dose, and patient before administration.

Lawsuits, Settlement, and Patient-Safety Advocacy

Cedars-Sinai Settlement and Regulatory Action

Dennis and Kimberly reached a $750,000 settlement with Cedars-Sinai in December 2008. The agreement addressed the hospital error that endangered Zoe and Thomas.

The California Department of Public Health also fined the hospital $25,000. Regulators said the violations caused or could have caused serious injury or death.

Baxter Healthcare Lawsuit

The family separately sued Baxter Healthcare, which made the Heparin vials. The case argued that adult and pediatric packages looked too similar.

An Illinois court dismissed the first lawsuit because California was the more suitable location. Dennis later filed another case in Los Angeles Superior Court in 2010.

The Quaid Foundation and Healthcare Reform

Dennis and Kimberly formed the Quaid Foundation in early 2008. Its work focused on public awareness and preventable medical errors.

The foundation supported bedside barcode scanning. Under this system, staff scan a patient’s wristband and medication to confirm the correct drug and dose. Dennis also discussed patient safety before public and government audiences.

Documentaries and Public Campaigns

Dennis shared the twins’ experience in Chasing Zero: Winning the War on Healthcare Harm. The 2010 documentary examined medical mistakes and practical safety systems.

He later appeared in Surfing the Healthcare Tsunami in 2012. Both campaigns urged healthcare leaders to combine strong leadership, safe practices, and technology.

Documented Public Appearances and Media Timeline

The 2024 Reagan Premiere

Zoe attended the Los Angeles premiere of Reagan with her father on August 20, 2024. The event took place at the TCL Chinese Theatre in Hollywood.

Media photos showed the father and daughter together on the red carpet. It remains one of Zoe’s few widely documented Hollywood appearances.

The 2025 Texas Flood Scare

Zoe worked as a counselor at a Texas Hill Country summer camp in July 2025. Her camp was north of the main flood zone and was not directly damaged.

Dennis could not contact her until the next day. Zoe was safe and was not working at Camp Mystic, where children and counselors died during the July 4 disaster.

The floods killed more than 100 people, including nine-year-old Janie Hunt. Her grandfather, Clark Hunt, is chairman of the Kansas City Chiefs.

Zoe Grace Quaid’s Education and Life Today

High-School Graduation and College Plans

Zoe graduated from high school in late May 2026. At 18 years old, she is moving from secondary education into early adulthood.

She plans to attend the University of Virginia. Thomas will follow a separate academic path at the University of Colorado Boulder.

Current Public Profile

Zoe continues to live a private life. Her documented public activity centers on education, family events, and rare appearances with Dennis.

She has not launched a public entertainment career or developed the level of online visibility associated with many celebrity children.

Is Zoe Grace Quaid an Actress?

Zoe Grace Quaid does not have a verified professional acting career. No established film or television credits have been documented under her name as of 2026.

Her appearance at the Reagan premiere was a family red-carpet appearance, not an acting role. Jack Quaid is the sibling with credits in The Hunger Games and The Boys.

Verified Facts Versus Unconfirmed Online Claims

Net Worth and Financial Claims

No independent career earnings or personal net worth have been documented for Zoe. A reported $30 million figure reflects claims about family wealth rather than her own finances.

She graduated from high school in 2026 and has not announced paid professional work. Her father’s assets should not be assigned to her.

Height, Appearance, Religion, and Ethnicity Claims

Zoe is American and was born in California. Exact claims about her height, eye color, religion, or ethnic identity do not belong in a factual profile without reliable confirmation.

Figures such as 4 feet 8 inches, 5 feet 5 inches, or 165 centimeters should not be treated as established measurements.

Relationships and Personal-Life Claims

Zoe has not publicly confirmed a boyfriend, marriage, or other romantic relationship. Her private life has remained outside regular media coverage.

Claims about dating, suitors, or relationship status add speculation rather than useful biography information.

Hobbies, Personality, and Interests

Activities such as horseback riding, swimming, painting, songwriting, and landscape photography have not been established as central parts of Zoe’s public life.

Descriptions such as unusually brave, humble, calm, or emotionally mature should not be presented as facts without direct evidence.

Why Zoe Grace Quaid’s Story Matters

Medical-Safety Legacy

The Heparin overdose became a widely discussed example of preventable medication harm. It showed how poor storage, similar packaging, and missed dosage checks can place patients at risk.

The Quaid Foundation promoted barcode scanning, wristband matching, and stronger hospital safeguards. These systems create extra checks before medicine reaches a patient.

Privacy, Celebrity Children, and Responsible Reporting

Zoe’s public record is smaller than her father’s or Jack Quaid’s. Her limited exposure calls for clear separation between documented events and unsupported online claims.

Accurate reporting should rely on confirmed dates, public appearances, court records, and direct family updates. Name matches, stock-photo listings, and fan accounts can produce false information.

Conclusion

Zoe Grace Quaid was born on November 8, 2007, to Dennis Quaid and Kimberly Buffington. She shares her early history with twin brother Thomas Boone and has an older half-brother, Jack Quaid.

Her life includes survival from the Cedars-Sinai Heparin overdose, a rare appearance at the 2024 Reagan premiere, and safe work near the 2025 Texas flood area. After graduating in 2026, she plans to attend the University of Virginia while maintaining a private public profile.

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FAQs

Who is Zoe Grace Quaid?

Zoe Grace Quaid is the daughter of Dennis Quaid and Kimberly Buffington, the twin sister of Thomas Boone Quaid, and the half-sister of Jack Quaid.

How old is Zoe Grace Quaid?

Zoe Grace Quaid was born in Santa Monica, California, on November 8, 2007, and is 18 years old as of August 2026.

Who are Zoe Grace Quaid’s parents?

Her parents are American actor Dennis Quaid and real estate professional Kimberly Buffington, who married in 2004 and finalized their divorce in 2018.

Does Zoe Grace Quaid have any siblings?

Zoe has a twin brother, Thomas Boone Quaid, and an older half-brother, actor Jack Quaid, whose mother is Meg Ryan.

What happened to Zoe Grace Quaid as a baby?

Zoe and Thomas survived a life-threatening Heparin overdose at Cedars-Sinai after receiving 1,000 times the prescribed dose while being treated for staph infections.

Is Zoe Grace Quaid an actress?

Zoe Grace Quaid is not a professional actress and has no verified film or television credits, although she attended the 2024 Reagan premiere.

Was Zoe in danger during the 2025 Texas flood?

Zoe was working as a counselor at a nearby Texas Hill Country camp in July 2025, but the camp was safe and not Camp Mystic.

What is publicly known about Zoe Grace Quaid’s recent life?

Zoe graduated from high school in 2026 and plans to attend the University of Virginia while maintaining a private life with few public appearances.