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Cardiac Krock

Cardiac Krock

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Understand Your Heart.
Know What to Do Next.

Expert guidance , trusted tools , and the answers you need about your heart health from Dr. Marc Krock.

Dr. Krock

✓Chief of Cardiology
✓Dallas Stars Cardiologist
✓Hospital Award Winner
✓20+ Years Certified

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Heart Health Resources from a Cardiologist You Can Trust

TOOLS DR. KROCK RECOMMENDS

Shop trusted at-home monitors, heart-support supplements, defibrillators, and more — handpicked by Dr. Krock to help you stay ahead of symptoms.

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UNDERSTAND YOUR HEART HEALTH

Explore expert-backed articles that break down tests, symptoms, and treatment options so you know what matters and what to ask your doctor.

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WATCH DR. KROCK ON YOUTUBE

Follow along as Dr. Krock explains heart symptoms, test results, and the latest research — in plain language, with real patient stories.

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Meet Dr. Krock

Trusted by Thousands. Chosen by the Pros.
Dr. Marc Krock is a board-certified cardiologist with 30+ years of cardiology experience and a reputation for clinical excellence. He’s the cardiologist to the Dallas Stars NHL team and has led major heart programs across North Texas. At The Heart Smart Group, he helps patients take charge of their heart health with trusted tools, clear answers, and next-step support.

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Heart Terms, Explained: What Your Cardiologist Wants You to Know

By Dr. Marc Krock, Board-Certified Interventional Cardiologist Cardiology has its own language —

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The Mediterranean Diet for Heart Health: A Cardiologist’s Practical Guide

If you are trying to eat for a healthier heart, the Mediterranean diet should be your guide. It

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Dr. Krock’s cardiologist practice in McKinney and Frisco, Texas.

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Heart health education from a real cardiologist. Learn the signs of AFib, use smart devices right, and avoid the ER with early detection.

Real footage. Real emergency. Real lives saved. T Real footage. Real emergency. Real lives saved.

This patient came in while having a heart attack and Dr. Marc Krock immediately took them to the cath lab
to place a life-saving coronary stent.

Heart attacks don’t always give you a warning.
Sometimes it’s chest pain.
Sometimes it’s jaw or shoulder discomfort.
Sometimes it’s just… something feels off.

Every second counts.
And having the right cardiologist in that moment?
It can mean the difference between life and death.

If you’ve been putting off symptoms, don’t.
Get checked by your local cardiologist. Get answers. Stay ahead of the heart attack.
Not all diets are created equal. The Mediterranea Not all diets are created equal.

The Mediterranean Diet isn’t about restriction, it’s about smarter choices that actually support your heart long-term.

✔️ Healthy fats (olive oil, nuts)
✔️ Real, whole foods
✔️ Less processed junk
✔️ Balance over extremes

This isn’t a trend.
It’s one of the most studied ways to reduce cardiovascular risk.

Start simple. Stay consistent. Your heart will thank you.
Most people focus on basic cholesterol numbers. B Most people focus on basic cholesterol numbers.

But in practice, that’s not always what tells the full story.

There’s one marker that helps us understand how aggressive those particles actually are and how likely they are to cause plaque buildup.

That’s why this number can change how we think about your risk, even when everything else looks “normal.”

If you’ve ever been told your cholesterol is fine but you still have concerns, this is worth asking about.

Start here:
Ask for advanced cholesterol testing
Look at ApoB, not just LDL
Understand your full risk, not just part of it

Simple shift. Much clearer picture.

If you're in the Frisco or McKinney, Tx area, we offer the Prevention Clinic to help you understand your numbers with confidence. Visit theheartsmartgroup.com to set up an appointment.
He felt normal. No symptoms. No warning signs. Hi He felt normal. No symptoms. No warning signs.

His calcium score said otherwise.

That one test led us to dig deeper
And we found severe blockages in multiple arteries
Including the “widowmaker”

He needed bypass surgery.

This is why prevention matter. Heart disease doesn’t always show up with symptoms.

Without baseline screening, you don't really know what is going on with your heart.

At the The Heart Smart Group in Frisco or McKinney, we have a prevention clinic pathway that is designed to educate you, get your labs, and assess risk. We’ll help you understand where you are and put a plan in place to prevent problems before they start.
Big step forward for heart care in Frisco. Gratef Big step forward for heart care in Frisco.

Grateful to Medical City Frisco for continuing to invest in advanced cardiac imaging like this new GE scanner.

This type of scan lets us see the heart in detail in order to:
• Detect plaque and early blockage
• Measure blood flow through the arteries
• Understand how severe a blockage really is

All without going straight to an invasive procedure.

In many cases, we can now:
• Catch issues earlier
• Avoid unnecessary catheterizations
• Plan procedures more precisely before ever stepping into the lab

It gives us a clearer picture before making a decision.

Who this helps
• Patients with abnormal calcium scores
• Unclear or borderline stress tests
• New symptoms like chest discomfort or decreased stamina
• Patients we already suspect may need a stent

The goal is simple. Better information leads to better decisions And better decisions lead to better outcomes
Cheering on the @DallasStars in the playoffs. Pro Cheering on the @DallasStars in the playoffs.

Proud to serve as the team cardiologist for this organization. From the ice to the exam room, heart health plays a direct role in performance, endurance, and recovery.

Grateful to support these athletes behind the scenes and help keep them competing at the highest level.
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