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This material may not be published, broadcast, rewritten, or redistributed. ©2026 FOX News Network, LLC. All rights reserved. Quotes displayed in real-time or delayed by at least 15 minutes. Market data provided by Factset. Powered and implemented by FactSet Digital Solutions. Legal Statement. Mutual Fund and ETF data provided by LSEG.

Marc Siegel

Marc Siegel

Marc Siegel, M.D., the Senior Medical Analyst for Fox News, is also a Clinical Professor of Medicine and a practicing internist at NYU Langone Medical Center. As the medical director of Doctor Radio on SiriusXM, Dr. Siegel has interviewed top experts on the COVID-19 pandemic, including the directors of HHS, NIH, CDC, FDA, NIAID and AMA.

Dr. Siegel is the author of six books. His most recent book, "The Miracles Among Us: How God’s Grace Plays a Role in Healing", debuted at #1 on both the New York Times and Publisher’s Weekly bestseller lists. Additional books include, "COVID: The Politics of Fear and the Power of Science," as well as "False Alarm: the Truth about the Epidemic of Fear," "Bird Flu: Everything You Need to Know about the Next Pandemic," and "Swine Flu: the New Pandemic," which was profiled by Publishers Weekly. He has also written columns that have appeared in The Los Angeles Times and The New York Daily News. His first book was the novel, "Bellevue."

Dr. Siegel has been at Fox News since 2008, when he was hired as a medical contributor. He has worked for the network as an analyst and as a reporter and writer for FoxNews.com. Notable interviews have included President Donald Trump, former President George W. Bush, former Vice President Dick Cheney, two Health and Human Services secretaries, and U.S. senators, as well as the first exclusive interview with a survivor of the Boston marathon bombing. 

Dr. Siegel traveled to the National Quarantine Unit at Nebraska Medicine in February 2020 to interview the team of scientists and the Diamond Princess passengers who contracted COVID-19, and warned the world about the coming pandemic.

Dr. Siegel is a member of the board of contributors at USA Today. He is also a columnist for FoxNews.com, The Hill, and the Wall Street Journal. He wrote a weekly column for the Los Angeles Times for six years, "The Unreal World," which examined TV and movies for medical accuracy. 

Prior to that, the doctor wrote a weekly medical news column for the New York Daily News' health section.

Siegel graduated from SUNY Buffalo School of Medicine & Biomedical Sciences and completed his residency training at the New York University Medical Center.

Follow him on X @drmarcsiegel.

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DEA begins marijuana rescheduling hearing
3 days ago

DEA begins marijuana rescheduling hearing

Fox News senior medical analyst Dr. Marc Siegel discusses the DEA’s marijuana hearings and concerns about the drug’s addictive nature and unproven medical benefits on ‘Fox & Friends.’

Parents turning to GLP-1 drugs for kids as obesity rates soar
6 days ago

Parents turning to GLP-1 drugs for kids as obesity rates soar

Fox News senior medical analyst Dr. Marc Siegel discusses the alarming rise of childhood obesity on 'Fox & Friends Weekend' and why some parents are turning to GLP-1 medications like Wegovy to remedy the trend.

Staggering fentanyl amounts hit streets as experts express concerns
June 24, 2026

Staggering fentanyl amounts hit streets as experts express concerns

Fox News senior medical analyst Dr. Marc Siegel joins 'America's Newsroom' to discuss the growing fentanyl crisis and the whistleblowers speaking out on the issue.

Full-body MRI scans grow in popularity
June 22, 2026

Full-body MRI scans grow in popularity

‘Fox & Friends’ hosts discuss the growing popularity of full-body MRI scans for early disease detection. Fox News senior medical analyst Dr. Marc Siegel shares his concerns about the technology.

New research casts doubt on cannabis benefits, cites mental health risks
June 20, 2026

New research casts doubt on cannabis benefits, cites mental health risks

Fox News senior medical analyst Dr. Marc Siegel discusses new research on modern marijuana’s high THC potency and increased mental health risks on ‘Fox & Friends Weekend.’

High-potency cannabis linked to mental health risks, expert warns
June 20, 2026

High-potency cannabis linked to mental health risks, expert warns

Senior medical contributor Dr. Marc Siegel highlights new research on modern marijuana.

Tulsi Gabbard releases documents on Fauci, alleged COVID cover-up
June 19, 2026

Tulsi Gabbard releases documents on Fauci, alleged COVID cover-up

Tulsi Gabbard releases documents on Fauci, alleged COVID cover-up

Mangione to assert 'psychiatric defense' in murder trial
June 17, 2026

Mangione to assert 'psychiatric defense' in murder trial

Fox News senior medical analyst Dr. Marc Siegel and Fox News legal analyst Kerri Urbahn discuss developments in Luigi Mangione's murder trial, where his team plans to assert a psychiatric defense.

Florida sues TikTok over allegedly addictive features
June 16, 2026

Florida sues TikTok over allegedly addictive features

Fox News senior medical analyst Dr. Marc Siegel discusses Florida’s lawsuit against TikTok and examines the potential mental health effects of social media use on ‘Fox & Friends.’

Trump sets record with 22-specialist physical exam
June 13, 2026

Trump sets record with 22-specialist physical exam

Fox News senior medical analyst Dr. Marc Siegel discusses President Donald Trump’s annual physical exam and a growing Gen Z trend of turning to the internet for health advice on ‘Fox & Friends Weekend.’

New study links ultra-processed foods to dementia risk
June 8, 2026

New study links ultra-processed foods to dementia risk

Fox News senior medical analyst Dr. Marc Siegel discusses a new study revealing ultra-processed foods increase dementia risk by nearly 60%.

Kyle Busch's death prompts warnings on pneumonia risks
June 6, 2026

Kyle Busch's death prompts warnings on pneumonia risks

Fox News senior medical analyst Dr. Marc Siegel details the dangers of pneumonia, emphasizing that it can affect anyone. He highlights the tragic death of NASCAR driver Kyle Busch from pneumonia complications.

Graham Platner under fire for mounting controversies
June 4, 2026

Graham Platner under fire for mounting controversies

'Outnumbered' panelists dissect the growing 'Platner problem' faced by Democrats as Maine Senate candidate Graham Platner confronts multiple allegations.

Tick bite ER visits hit highest level since 2017
June 1, 2026

Tick bite ER visits hit highest level since 2017

Fox News senior medical analyst Dr. Marc Siegel discusses the rise in emergency room visits linked to tick bites and efforts to prevent Lyme disease on ‘Fox & Friends.’

Tick-borne illnesses surge across US
May 30, 2026

Tick-borne illnesses surge across US

Fox News senior medical contributor Dr. Marc Siegel discusses the rise of tick-borne illnesses and details HHS Secretary Robert F. Kennedy Jr.’s efforts to combat Lyme disease on ‘Fox & Friends Weekend.’

Kyle Busch's death certificate offers new insight
May 28, 2026

Kyle Busch's death certificate offers new insight

Fox News senior medical analyst Dr. Marc Siegel discusses the events that led to NASCAR driver Kyle Busch's death and a new gene-editing therapy that could change the future of heart disease treatment.

Kyle Busch’s family reveals NASCAR champion died from severe pneumonia that led to sepsis
May 25, 2026

Kyle Busch’s family reveals NASCAR champion died from severe pneumonia that led to sepsis

Fox News senior medical analyst Dr. Marc Siegel discusses the death of NASCAR driver Kyle Busch after his family said severe pneumonia progressed into sepsis on ‘The Big Weekend Show.’

Tributes pour in for Kyle Busch after pneumonia, sepsis revealed as cause of death
May 25, 2026

Tributes pour in for Kyle Busch after pneumonia, sepsis revealed as cause of death

Fox News senior medical analyst Dr. Marc Siegel discusses NASCAR legend Kyle Busch’s death and offers guidance on recognizing and treating pneumonia on ‘Fox & Friends.’

NASCAR legend Kyle Busch reportedly died of severe pneumonia
May 23, 2026

NASCAR legend Kyle Busch reportedly died of severe pneumonia

Fox News senior medical analyst Dr. Marc Siegel discusses NASCAR champion Kyle Busch's death reportedly due to a case of severe pneumonia.

911 call reveals Kyle Busch was coughing up blood before death
May 23, 2026

911 call reveals Kyle Busch was coughing up blood before death

Fox News senior medical analyst Dr. Marc Siegel discusses the 911 call which revealed NASCAR champion Kyle Busch suffered shortness of breath and coughed up blood before his death.

New details emerge in death of Kyle Busch as NASCAR world remains in shock
May 23, 2026

New details emerge in death of Kyle Busch as NASCAR world remains in shock

Fox News senior medical analyst Dr. Marc Siegel discusses the death of NASCAR star Kyle Busch on ‘The Ingraham Angle.’

911 audio reveals Kyle Busch was overheating, coughing blood
May 22, 2026

911 audio reveals Kyle Busch was overheating, coughing blood

Fox News' Madison Scarpino and senior medical analyst Dr. Marc Siegel discuss the released audio of the 911 call made before NASCAR champion Kyle Busch's death. Audio courtesy of the Cabarrus County Sheriff's Office.

Ebola outbreak in Africa grows
May 21, 2026

Ebola outbreak in Africa grows

Dr. Marc Siegel discusses growing concerns over an Ebola outbreak in Africa, including an American doctor testing positive. The segment also covers challenges of Hantavirus quarantine.

Spanish government officials in orange and white hazmat suits spray a passenger with disinfectant on an airport tarmac.
Opinion
May 18, 2026

DR MARC SIEGEL, JENNIFER JOHNSON: Meet the angel doctors fighting hantavirus

Infectious disease expert Dr. Brett-Major focuses on both psychological and physical wellbeing of passengers quarantined 42 days in Nebraska.

Hantavirus outbreak on cruise ship, physician discusses false positive
May 18, 2026

Hantavirus outbreak on cruise ship, physician discusses false positive

Hantavirus outbreak on cruise ship, physician discusses false positive

WHO official says hantavirus outbreak is very well-contained
May 12, 2026

WHO official says hantavirus outbreak is very well-contained

Fox News senior medical analyst Dr. Marc Siegel details federal monitoring of 18 American passengers after a hantavirus outbreak on a cruise ship on ‘The Story.’

Americans from hantavirus ship monitored in Nebraska, Georgia
May 12, 2026

Americans from hantavirus ship monitored in Nebraska, Georgia

Fox News senior medical analyst Dr. Marc Siegel and UNMC infectious disease professor Dr. Mark Rupp join ‘America Reports’ to discuss quarantine measures for cruise passengers exposed to hantavirus now in the U.S.

Hantavirus outbreak: 18 Americans monitored in Atlanta and Nebraska
May 12, 2026

Hantavirus outbreak: 18 Americans monitored in Atlanta and Nebraska

Fox News senior medical analyst Dr. Marc Siegel reports live from Omaha, where the 18 Americans exposed to Hantavirus are being monitored. Dr. Siegel discusses insights on the virus, its transmission and quarantine measures.

Hantavirus outbreak on cruise ship sparks concern as passengers return to US
May 11, 2026

Hantavirus outbreak on cruise ship sparks concern as passengers return to US

Senior medical analyst Dr. Marc Siegel discusses the Hantavirus outbreak aboard the MV Hondius, noting three deaths and the possibility of human-to-human spread. Passengers are now returning to the U.S., raising questions about containment.

Hantavirus survivor shares diagnosis story amid outbreak concerns
May 11, 2026

Hantavirus survivor shares diagnosis story amid outbreak concerns

Hantavirus survivor Jennifer Benewiat shares her experience contracting the deadly disease. Fox News senior medical analyst Dr. Marc Siegel provides analysis on ‘Fox & Friends.’

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