Zoe Grace Quaid is the daughter of American actor Dennis Quaid and real estate professional Kimberly Buffington. Born on November 8, 2007, in Santa Monica, California, she grew up in a Hollywood family alongside her twin brother, Thomas Boone Quaid, and older paternal half-brother, Jack Quaid. She also became known through a serious medical emergency involving a medication error shortly after her birth.

Unlike her father and half-brother, Zoe has maintained a largely private life. As of November 2026, she is 19 years old and attends the University of Virginia, where she studies business.

Who Is Zoe Grace Quaid? Biography and Quick Facts

Zoe Grace Quaid is best known as one of Dennis Quaid’s twin children. Her father has appeared in several popular Hollywood films, while her older half-brother has established his own acting career.

Zoe was born on November 8, 2007, in Santa Monica, California. She shares her birthday with her twin brother, Thomas Boone Quaid. Both children were born through a gestational carrier.

Although her family has strong connections to the entertainment industry, Zoe has not established a publicly documented acting career. Her recent life has focused on education and college.

Zoe Grace Quaid’s Early Life, Birth and Family Background

Birth Details and Childhood

Zoe Grace Quaid was born on November 8, 2007, in Santa Monica, California. Her twin brother, Thomas Boone Quaid, arrived just two minutes apart from her.

Their birth was a major family milestone for Dennis Quaid and Kimberly Buffington. The couple welcomed the twins through a gestational carrier after experiencing fertility challenges.

Zoe spent her early childhood away from regular Hollywood publicity. Her parents generally kept their children’s daily lives private, even though Dennis frequently appeared in the media.

Why Dennis Quaid and Kimberly Buffington Used a Gestational Carrier

Dennis Quaid and Kimberly Buffington welcomed their twins through a gestational carrier in 2007. This arrangement allowed them to have biological children.

A gestational carrier carries a pregnancy for intended parents. Unlike traditional surrogacy, the carrier does not provide the egg used to create the embryo.

The twins’ birth expanded Dennis’s family and gave him two younger children. Kimberly also became a mother to twins, adding a new chapter to their family life.

Growing Up in a Hollywood Family

Growing up in the Quaid family meant having close connections to the film industry. Dennis Quaid had already built a long career in Hollywood before Zoe was born.

Her older half-brother, Jack Quaid, also entered the entertainment business. However, Zoe and Thomas followed a more private childhood.

Their family background includes both film-industry experience and personal family relationships. Despite the public interest surrounding their father, the twins have largely remained outside the entertainment spotlight.

Zoe Grace Quaid’s Parents and Family Relationships

Zoe belongs to a blended Hollywood family. Her relationships with her parents and siblings connect her to several generations of entertainment history.

Dennis Quaid: Her Father

Dennis Quaid is an American actor known for his work in films and television. He was born in Houston, Texas, in 1954 and began building his acting career during the 1970s.

His film credits include The Right Stuff, The Big Easy and Great Balls of Fire! He also became widely recognized through The Parent Trap, The Day After Tomorrow and The Rookie.

In 2024, he portrayed Ronald Reagan in the biographical film Reagan. His career has kept the Quaid family connected to Hollywood for decades.

Dennis has three children from his relationships. Zoe and Thomas are his younger children, while Jack is his eldest son.

Kimberly Buffington: Her Mother

Kimberly Buffington is Zoe’s biological mother and Dennis Quaid’s former wife. She has a professional background in real estate rather than acting.

Dennis and Kimberly married in 2004. They welcomed Zoe and Thomas in November 2007.

The couple later experienced marital difficulties and separated in 2016. Their divorce was finalized through an agreement in 2018.

Following their separation, both parents remained part of their children’s lives. Kimberly has generally maintained a lower public profile than her former husband.

Thomas Boone Quaid: Her Twin Brother

Thomas Boone Quaid is Zoe’s twin brother. He was born on November 8, 2007, just two minutes apart from her.

The twins experienced the same serious medical emergency shortly after birth. Both received an accidental heparin overdose at Cedars-Sinai Medical Center, but they recovered.

In 2026, Thomas began attending the University of Colorado Boulder. He is studying business, following a different university path from his sister.

Jack Quaid: Her Older Half-Brother

Jack Quaid is Zoe’s older paternal half-brother. He was born on April 24, 1992, to Dennis Quaid and actress Meg Ryan.

Jack developed an acting career and appeared in The Hunger Games. He later gained wider recognition through the television series The Boys and the Scream franchise.

He also appeared in the television series Vinyl. His career gives Zoe another close family connection to the entertainment industry.

The 2007 Medical Emergency: Zoe Grace Quaid’s Heparin Overdose

One of the most significant events in Zoe’s early life occurred when she was only 11 days old. The incident involved a serious medication error at Cedars-Sinai Medical Center in Los Angeles.

What Happened at Cedars-Sinai Medical Center?

In November 2007, Zoe and Thomas were receiving treatment for staph infections. Their doctors administered intravenous medication as part of their hospital care.

However, the twins accidentally received an extremely concentrated dose of heparin. The medication error placed both newborns at serious risk.

Dennis and Kimberly later spoke publicly about the incident. Their experience brought national attention to hospital medication safety.

What Is Heparin and Why Was It Administered?

Heparin is an anticoagulant, commonly known as a blood thinner. Doctors use it to help prevent blood clots in certain medical situations.

In hospitals, heparin may also be used in intravenous catheter procedures. This helps maintain access to a patient’s bloodstream during treatment.

The medication requires careful concentration and dosage checks. Even a small difference in concentration can create serious risks, especially for newborn babies.

Understanding the 1,000-Fold Dosage Error

The central problem involved the concentration of the medication.

The intended concentration was 10 units/mL, but the twins received medication containing 10,000 units/mL.

This was a serious medication administration error. The incident highlighted the risks of incorrect drug labeling, packaging and concentration selection.

It also raised questions about the procedures hospitals use to verify medication before administering it to patients.

Emergency Treatment and the Twins’ Recovery

Medical professionals responded to the overdose and treated both newborns. The twins survived the emergency and recovered.

They were discharged from the hospital in early December 2007.

The experience remained an important part of their family’s history. Dennis and Kimberly later used their public platform to discuss medication safety and preventable medical errors.

How the Medical Incident Influenced Patient-Safety Advocacy

The overdose affected more than the Quaid family. It also became part of a wider discussion about hospital safety and medication administration.

Dennis Quaid’s Congressional Testimony

On May 14, 2008, Dennis and Kimberly Quaid appeared before the U.S. House Committee on Oversight and Government Reform.

They described the medication incident and discussed the dangers of preventable hospital errors.

Their testimony helped bring attention to drug labeling, medication concentration and hospital procedures.

Dennis used his experience as a father to explain why healthcare providers need reliable medication verification systems.

The Quaid Foundation and Medication Safety

Following the incident, Dennis Quaid established the Quaid Foundation to support awareness of patient safety.

Its work focused on medication errors and the need for safer healthcare practices.

The family also helped bring attention to the importance of accurate drug packaging and hospital medication systems.

Lessons for Hospitals and Patients

The incident highlighted several areas where healthcare systems must maintain strong safeguards:

Medication verification: Healthcare professionals should confirm the correct drug and concentration.

Dosage checking: Every medication must match the prescribed amount.

Drug labeling: Packaging should clearly identify the medication’s strength.

Hospital safety protocols: Staff should follow reliable procedures before administering drugs.

Patient protection: Families should be able to ask questions about treatments and medication.

These measures help reduce preventable medication errors.

Zoe Grace Quaid’s Education and College Life in 2026

Education is one of the clearest developments in Zoe’s recent life. In 2026, she completed high school and moved into university education.

High-School Graduation

Zoe and her twin brother reached an important milestone in May 2026 when they graduated from high school.

The graduation marked the beginning of a new stage for both siblings. Their next step involved preparing for university and greater independence.

Dennis Quaid also discussed this transition publicly as his younger children prepared to leave home for college.

University of Virginia and Business Studies

Zoe attends the University of Virginia, where she studies business.

Dennis Quaid confirmed this information in an interview published on September 3, 2026. He also discussed how the twins were adjusting to their new college lives.

The University of Virginia is located in Charlottesville, Virginia. It is a well-known public research university with a broad range of academic programmes.

Zoe’s business studies represent her current academic direction. Her future professional plans have not been publicly established.

Zoe and Thomas’s Different University Paths

Although the twins share the same birthday and childhood experiences, they chose different universities.

Both began their university journeys in 2026. Their different college experiences mark a new chapter after growing up together.

Zoe Grace Quaid’s Public Appearances and Life Outside Hollywood

Although Zoe rarely appears in entertainment news, a few documented events have brought her into the public eye.

The Reagan Movie Premiere in August 2024

On August 20, 2024, Zoe appeared with her father at the Los Angeles premiere of Reagan.

The event took place at the TCL Chinese Theatre. Dennis Quaid starred as former U.S. President Ronald Reagan in the biographical film.

Her appearance attracted attention because she rarely attends major Hollywood events. It also offered a glimpse of her relationship with her father.

Working as a Summer Camp Counselor During the 2025 Texas Floods

In July 2025, Zoe worked as a summer camp counselor in Texas. She was 17 years old at the time.

During the same period, severe flooding affected parts of Texas, including the Texas Hill Country.

Dennis Quaid later discussed his concern for his daughter during the floods. He confirmed that she was safe.

The event brought attention to her summer activities outside Hollywood and showed a different part of her teenage life.

Her Private Life and Media Presence

Zoe maintains a relatively private public profile. Unlike Dennis and Jack, she does not have an established entertainment career.

Her limited public appearances mean that information about her personal interests and daily activities remains scarce.

Her family background naturally attracts attention, but she has largely stayed away from regular celebrity coverage.

Does Zoe Grace Quaid Have an Acting Career?

Zoe Grace Quaid has a strong family connection to Hollywood, but that does not establish an acting career of her own.

Her father, Dennis Quaid, has appeared in films such as The Parent Trap and The Day After Tomorrow. Her half-brother, Jack Quaid, has built a separate career through productions such as The Boys.

Zoe has not established a publicly documented filmography or professional television career.

Her recent education focuses on business studies at the University of Virginia. Therefore, it would be inaccurate to describe her as an established actress.

Zoe Grace Quaid’s Net Worth and Financial Background

There is no reliable public financial disclosure establishing Zoe Grace Quaid’s personal net worth.

Her father has earned money through decades of acting work, but his financial position should not be treated as her personal wealth.

Similarly, family assets and estimated celebrity earnings do not establish how much Zoe independently owns.

Her own professional income, assets and financial activities have not been publicly documented. Any specific figure presented as her personal net worth would therefore be speculative.

What Is Zoe Grace Quaid Doing Now in 2026?

As of November 2026, Zoe Grace Quaid is 19 years old and attending the University of Virginia.

She is studying business and has moved into university life following her high-school graduation earlier in the year.

Her twin brother, Thomas Boone Quaid, attends the University of Colorado Boulder. Both siblings are beginning their adult lives through higher education.

Zoe also remains connected to her family through Dennis Quaid and Kimberly Buffington. However, she continues to maintain a relatively private lifestyle.

Her future career direction has not been publicly confirmed. For now, her university education is the clearest documented part of her current life.

Conclusion

Zoe Grace Quaid is known through her family background, her survival of the 2007 heparin medication emergency and her connection to Hollywood actor Dennis Quaid. She grew up alongside her twin brother, Thomas Boone Quaid, and older half-brother, Jack Quaid.

In 2026, she entered a new stage of life by attending the University of Virginia and studying business. While her family has a strong entertainment background, Zoe has maintained a more private path focused on education and personal development.

FAQs

Who Is Zoe Grace Quaid?

Zoe Grace Quaid is the daughter of actor Dennis Quaid and Kimberly Buffington. She is the twin sister of Thomas Boone Quaid and Jack Quaid’s paternal half-sister.

How Old Is Zoe Grace Quaid in 2026?

Zoe Grace Quaid was born on November 8, 2007. She is 19 years old as of November 13, 2026.

Who Are Zoe Grace Quaid’s Parents and Siblings?

Her parents are Dennis Quaid and Kimberly Buffington. Her siblings are twin brother Thomas Boone Quaid and older paternal half-brother Jack Quaid.

What Happened to Zoe Grace Quaid When She Was a Baby?

In November 2007, Zoe and her twin brother accidentally received a 1,000-fold overdose of heparin at Cedars-Sinai Medical Center. Both recovered.

Where Does Zoe Grace Quaid Go to College?

Zoe attends the University of Virginia, where she studies business. Her twin brother Thomas attends the University of Colorado Boulder.

Is Zoe Grace Quaid an Actress Like Her Father and Brother?

No publicly documented professional acting career or filmography has been established for Zoe. Her father and half-brother are professional actors.

What Is Zoe Grace Quaid Doing Now?

As of November 2026, Zoe is attending the University of Virginia and studying business after graduating from high school earlier that year.

What Is Zoe Grace Quaid’s Net Worth?

Zoe Grace Quaid’s personal net worth has not been publicly established. Her father’s wealth should not be confused with her individual financial assets.