"My only regret is not doing this sooner."
Passed multiple stress tests. Calcium score of 984. Told things looked "pretty good" — until a heart attack while fishing.
Read full story →About ClearCardio®
Built to replace the reactive medical model — not fit into it.
ClearCardio® wasn't created to fit into the current medical system. It was created to replace it — and to save 10 million lives over the next 10 years.
The mission
Heart disease is the #1 killer in America precisely because the system waits for symptoms. We invert the model: detect the disease in its silent phase with 640-slice CCTA + FDA-cleared AI, and treat it with a personalized, physician-led plan — long before it ever causes a symptom. Because heart disease is largely genetic, measurable, and in many cases largely preventable.
Dr. John OsborneFounder & Medical Director
"Heart disease is largely genetic, 100% measurable — and in many cases, totally preventable."
Meet Dr. John Osborne, MD, PhD — your preventive cardiologist
A career built around one goal: preventing heart attacks before they start.
Dr. John Osborne, MD, PhD, is a preventive cardiologist in the Dallas–Fort Worth area and the founder and medical director of ClearCardio. He holds a PhD in Cardiovascular Physiology and is nationally recognized for his expertise in how medications interact — especially for patients who are misdiagnosed, overmedicated, undermedicated, or unknowingly on drug combinations that work against each other. He was among the first physicians in Texas to adopt cardiac CT angiography, and he hasn't performed a heart catheterization in more than two decades — not because he couldn't, but because he found a better, earlier way.
His care doesn't stop at prescriptions: every prevention plan integrates lifestyle, nutrition, exercise, sleep, and stress management. For over 25 years he's studied the genetic roots of heart disease, proving that family history is not fate — as long as you act early. Surgery is his absolute last resort. His mission: save 10 million lives over the next 10 years.
3× board-certified — cardiology, lipidology and hypertension
25,000+ CCTA scans personally read over his career
25 yrs studying the genetics of heart disease
CardiologyLipidologyHypertension
Book a Patient Assessment → The system is built to react — not prevent
Why most doctors wait for the emergency — and why that could leave your risk unmeasured for years.
The modern medical system is built to react, not prevent. Most cardiologists are trained — and reimbursed — to intervene after symptoms appear, not to find disease in its silent phase. So the system's attention and resources concentrate on late-stage procedures:
- Heart catheterizations
- Stents
- Bypass surgeries
Each costs tens of thousands of dollars. But by then the disease is already advanced — and the root cause, microscopic rupture-prone plaque, has been ignored the whole time.
< 50 of 33,000 U.S. cardiologists
are board-certified in lipidology AND hypertension — the expertise you need to detect and treat disease early.
~1,000 people worldwide
are trained and certified to read and interpret coronary CT angiograms (CCTA) — the high-resolution heart scan that can catch this plaque before symptoms appear.
Even well-intentioned doctors may rely on tests that were never designed to find early soft plaque. If you've been told to "wait and see" based on a stress test, the most important question — what's actually in your arteries — is still unanswered.
Book a Patient Assessment →Patient stories
They did everything "right" — and still had plaque.
Trusted by patients across Dallas–Fort Worth
"I had no idea. No symptoms. If I didn't catch this now, I don't know what would've happened."
A 2023 calcium score came back positive but "not alarming." The CCTA revealed stage 3 disease.
Read full story →"They told me it wasn't a big deal. But all I could think was… okay, but what if it is?"
On statins by choice since 30. Passed every stress test. A calcium score of 30 didn't sit right — the soft plaque was the real threat.
Read full story →Book a call
Stop guessing. Get real answers about your heart.
Apply to become a ClearCardio patient at our Carrollton, TX practice — serving the entire Dallas–Fort Worth area. Our Patient Assessment Team will review your history, symptoms, risk factors and prior tests — and confirm if the program is right for you. Real answers in as little as 7 days.
- HIPAA compliant
- No obligation — step 1 is a conversation, not a commitment
- Reviewed by Dr. Osborne's Patient Assessment Team