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22 years after a cardiologist found her father’s 99% blocked artery, a Denver Health doctor finally got to say thank you

In 2004 an EMT student in Boulder mentioned her father’s symptoms to a cardiologist, who saw him within two days and found a 99% blocked artery. Both now work at Denver Health, and she recently reached out to thank him. Her father is 76.

Illustration of the Denver skyline at sunset with the mountains behind

Some thank-you notes take a while to write. This one took 22 years, and it connects a hospital in Boulder in 2004 with two colleagues at Denver Health today.

Denver Health shared the story on Oct. 7. In 2004, Mariah Bellinger was an emergency medical technician student rotating through the emergency department at Boulder Community Health’s hospital. On a slow day, cardiologist Matthew Holland, MD, brought her into the cardiac catheterization lab and taught her the warning signs of serious blockages.

A patient who sounded like her dad

When Holland described a patient in her 70s with chest pain and shortness of breath on exertion, Bellinger thought of her father. He was in his early 50s, an avid runner who had been feeling chest tightness on his runs. He had taken a stress test and was waiting about a month for a follow-up.

She told Holland, and Holland saw her father within two days. A catheterization revealed a 99% blockage in the left anterior descending artery, the artery tied to the heart attack often called the widow-maker. He received a stent.

Two decades later, the same hospital

Bellinger went on to become a doctor. She is now an emergency medicine physician at Denver Health’s Adult Urgent Care Center. Holland is the director of interventional cardiology at Denver Health. Recently, while consulting the cardiology team about a patient, she sent him a message to introduce herself and tell him how their paths had crossed in 2004.

Her father is 76 today. Denver Health says he is still skiing, boating and traveling, and keeping up with four grandchildren.

By the numbers

  • 22: years between the catheterization and the thank-you
  • 2: days it took for her father to be seen once she spoke up
  • 99%: the blockage found in his artery
  • 76: her father’s age now

The story is a reminder of two things: a few minutes of teaching can change a family’s life, and symptoms that show up during exercise are worth raising with a doctor instead of waiting out. Read Denver Health’s full account, including what both doctors said about it, at the link below.

More like this: Find the Good, Denver, The Denver auto body teacher who came back to lead his mentor’s program, Red Rocks Community College’s free monthly health clinic in Arvada, Learn: Health

Source: Denver Health. Verified October 10, 2026.

Details verified with the source on October 10, 2026. See something wrong? Send a correction.

Jessica Holland

FOUNDER + EDITOR, COLORADO LOCAL

Jessica Holland is a Colorado mom, entrepreneur, marketer and founder of Colorado Local. After years of constantly searching for things to do with her family, local businesses worth supporting, educational experiences for her girls, worship nights, community events and simply more GOOD news, she realized the resource she wanted didn’t really exist in one place. So she built it.

Jessica is also the founder of Holland Health Marketing, where she helps businesses grow through digital marketing, local visibility and community connection.

Her Christian faith is a big part of who she is and the way she sees the world. Colorado Local isn’t a faith-only publication, but you’ll absolutely find faith here, alongside stories about neighbors helping neighbors, churches serving their communities and people using what they have to make Colorado a little brighter.

She lives in Northern Colorado with her husband, two daughters and their very large Newfoundland, Mugsy.

Her mission for Colorado Local is pretty simple: help people get out, connect, support local and find more of the good happening right in front of us.

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