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Co-host, Why Should I Trust You? Podcast. Investigative Reporter & Medical Contributor, @ABC and @DianeSawyer. DOCTOR: Mohs Surgeon @DermofPhilly

Mark Abdelmalek’s Journalist Portfolio

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Is your sunscreen expired? Here's what you need to know

Is your sunscreen expired? Here's what you need to know

ABC News — The options for sunscreens are seemingly endless: sprays, lotions, sticks, not to mention the range of SPF numbers. But there's another important number you should be looking for -- an expiration date.

20/20: 07/10/18: Triumph in Thailand Watch Full Episode | 07/10/2018

20/20: 07/10/18: Triumph in Thailand Watch Full Episode | 07/10/2018

ABC News, 20/20 — 20/20 full episode recap: 'I felt nervous and worried': 12 boys, coach trapped inside Thai cave; The moment when 12 boys, coach trapped inside Thai cave were found alive

Father says deportation would be a 'death sentence'

Father says deportation would be a 'death sentence'

ABC News — Days before he was scheduled to board a flight from New York to Honduras, Nelson Rosales Santos was told he could stay in the U.S. for another six months as he awaits a kidney transplant and a green card. But that might not be enough time for him to undergo the operation that would save his life, according to his lawyer.

20/20: 04/20/18: My Reality: A Hidden America - A Diane Sawyer Special Watch Full Episode | 04/20...

20/20: 04/20/18: My Reality: A Hidden America - A Diane Sawyer Special Watch Full Episode | 04/20...

ABC News — Visit The official 20/20 online at ABC.com. Get exclusive videos, blogs, photos, cast bios, free episodes and more.

Reporter's Notebook: The new Hippocratic oath

Reporter's Notebook: The new Hippocratic oath

ABC News — This spring, nearly 20,000 medical students will graduate from medical schools across the country and will likely be asked to raise their hands for a new kind of Hippocratic Oath, one that now emphasizes a patient's right to choose their own destiny.

20/20: 11/03/17: Diane Sawyer Investigates: ISIS in America Watch Full Episode | 11/03/2017

20/20: 11/03/17: Diane Sawyer Investigates: ISIS in America Watch Full Episode | 11/03/2017

ABC News — 20/20 full episode recap: When former Marine discovered teen son talking to ISIS recruiters; How ISIS uses the internet to target young Americans for recruitment; The fight against ISIS's reach on America's youth

20/20: 04/21/17: Caitlyn Jenner - The Secrets of My Life Watch Full Episode | 04/21/2017

20/20: 04/21/17: Caitlyn Jenner - The Secrets of My Life Watch Full Episode | 04/21/2017

ABC News — Visit The official 20/20 online at ABC.com. Get exclusive videos, blogs, photos, cast bios, free episodes and more.

Experts Warn of Risks of Some at-Home Chemical Peels

Experts Warn of Risks of Some at-Home Chemical Peels

ABC News, GMA — Chrissy Dixon describes herself as having "some skin issues," including "fine lines, large pores and dark spots." To address those issues, Dixon, a beauty vlogger and cosmetologist, turned to an at home chemical peel containing 30 percent trichloroacetic acid, TCA, typically used by physicians and trained professionals.

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YouTube

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Hidden America: My Reality

Hidden America: My Reality

ABC News — ABC News special on the plight of millions of Americans pursuing the American Dream, Income Inequality, and exploring the concepts and solutions around the concept of a Living Wage, 20/20

20/20: 09/09/16: The Elizabeth Vargas Interview Watch Full Episode | 09/09/2016

20/20: 09/09/16: The Elizabeth Vargas Interview Watch Full Episode | 09/09/2016

ABC News — 20/20 full episode recap: Diane Sawyer sits down with Elizabeth Vargas to discuss Vargas's secret struggle with alcohol and anxiety as revealed in her book Between Breaths: A Memoir of Panic and Addiction; anxiety and alcohol abuse among Americans is examined.

Jaycee Dugard's Triumph Over Kidnapping, Captivity

Jaycee Dugard's Triumph Over Kidnapping, Captivity

ABC News — Jaycee Dugard has powerful memories from the last 20 years, 18 of them spent as a prisoner of kidnappers Phillip and Nancy Garrido. Yet, some of the most overwhelming memories come from her first two years of freedom which she and her children have spent reunited with her mother.

Video: This Philadelphia Museum Is Dedicated to Presidents' Hair

Video: This Philadelphia Museum Is Dedicated to Presidents' Hair

ABC News — For ABC news Digital, I'm Doctor Mark in Philadelphia. The city hosting this year's Democratic National Convention. We're here, about four miles north of the convention center, at the academy of natural sciences.

Video: Dramatic Changes Aim to Help Rikers Island's Youngest Inmates: Part 2

Video: Dramatic Changes Aim to Help Rikers Island's Youngest Inmates: Part 2

ABC News — charges. I'm confused where they even come from. Reporter: He says he is innocent. I put it all in god's hands. Reporter: Several days later when we return, it's 9:00. Everyone is locked in. I walk down the hall to see Murphy. Do me a favor. Come out here.

Video: Kate del Castillo on the Tweet That Started It All: Part 1

Video: Kate del Castillo on the Tweet That Started It All: Part 1

ABC News — Good evening. So glad you're joining us. It's the story of the curious trio, the oscar-winning actor, the Mexican superstar, and the drug lord known as el chapo. And there's something to keep in mind about drugs coming into America tonight.

Sue Klebold, Mother of Columbine Killer, Speaks Out

Sue Klebold, Mother of Columbine Killer, Speaks Out

ABC News — Sue Klebold sat down with Diane Sawyer for an exclusive interview on "20/20."

Video: Inside The Doctor's Office: Why is the Wait So Long?

Video: Inside The Doctor's Office: Why is the Wait So Long?

ABC News — We're taking you today behind the scenes of a busy doctor's office. We are in downtown Philadelphia. And Philadelphia is a city full of doctors. There are five medical schools in Philadelphia alone.

20/20: Bruce Jenner - The Interview Watch Full Episode | 04/24/2015

20/20: Bruce Jenner - The Interview Watch Full Episode | 04/24/2015

ABC News — Bruce Jenner: The Interview- Diane Sawyer Special

Video: Dallas Nurse Infected With Ebola Identified As Nina Pham

Video: Dallas Nurse Infected With Ebola Identified As Nina Pham

ABC News — First person to contract Ebola in the United States.

Video: Whistleblowers: Children Are Victims of a Broken System

Video: Whistleblowers: Children Are Victims of a Broken System

ABC News — We turn back here to an ABC news investigation about our nation's most vulnerable children. Nearly 150,000 abused or neglected kids removed from their families every year. Some former caseworkers have come forward to report the system designed to rescue children is sending them back to those homes. Without sufficient supervision.

Hospital Worker Tests Negative for MERS

Hospital Worker Tests Negative for MERS

abcn.ws

Video: Officials Confirm 2nd MERS Patient in US

Video: Officials Confirm 2nd MERS Patient in US

abcn.ws — This is a special room. A second patient in the US has been diagnosed with murders. The Middle Eastern respiratory system this time in Florida where a medical professional visiting from Saudi Arabia had to be hospitalized. And isolated. Hello everyone I'm Michelle Franzen in New York that patient was admitted to Orlando's doctor.

America Strong: Penn State Raises $13.3M for Pediatric Cancer Research at Dance Marathon

America Strong: Penn State Raises $13.3M for Pediatric Cancer Research at Dance Marathon

ABC News — America Strong: Penn State Raises $13.3M for Pediatric Cancer Research at Dance Marathon

Sticker Shock: Sticker Shock: Investigating the High Cost of Simple Blood Tests

Sticker Shock: Sticker Shock: Investigating the High Cost of Simple Blood Tests

ABC News, World News with Diane Sawyer
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