A heart doctor who diagnoses and treats heart disease, often without ever opening the chest.
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What you earn and what it costs to get there.
Median
$496,010
Bottom tenth
$107,190
Top tenth
$712,130
The national median is $496,010 a year, the bottom tenth sit near $107,190 and the top tenth near $712,130. One caution: the federal survey counts physicians who are employed and paid a wage. Cardiologists who are partners in their own practice are not in it, and the low end mostly reflects part-time and very early career work rather than a normal full-time salary.
About $70,000 to $95,000 a year
Resident and fellow salary, climbing with each year
You are paid from the first day after medical school, but that is 6 years of residency and fellowship on long hours before you earn a cardiologist's income.
$712,130 and up
Top tenth: interventional cardiologists and heart rhythm specialists
Pay follows procedures. Doctors who open blocked arteries or implant pacemakers and defibrillators earn more than general cardiologists who mostly see patients in clinic.
Tuition, fees, exams and kit. Not rent, food or travel
The low end is two years at a community college, two years at an in state public university, and an in state public medical school, with residency and the cardiology fellowship paid as jobs rather than charged as tuition. The high end is four full years of undergraduate tuition and a private medical school, plus admission testing, application and board certification fees. The Association of American Medical Colleges reports median education debt of around $200,000 for medical school graduates. Neither figure counts the fourteen to sixteen years of earnings you give up along the way, and that association runs a fee assistance program that cuts application and admission test costs for people who qualify.
The Association of American Medical Colleges reports median education debt of around $200,000 for medical school graduates. Its fee assistance program cuts application and admission test costs for students who qualify, and it is worth applying for before you spend anything.
Hospital or health system salary
Base pay plus a bonus tied to patient volume and procedures. The most common setup today.
Private practice partnership
You share the profits of the group. Higher ceiling, and invisible in government wage data.
Academic medicine
Lower pay at a university hospital in exchange for research and teaching.
Call pay and readings
Extra income for overnight availability and for interpreting scans and heart tracings.
The exact path from high school to qualified.
Four years of college, four of medical school, then six years of hospital training. No shortcuts.
Bachelor's degree
4 years
Any major, but finish the pre-medicine sciences, keep a very high grade average, and write the MCAT (Medical College Admission Test).
Medical school
4 years
An MD (doctor of medicine) or DO (doctor of osteopathic medicine) degree, with clinical rotations in the last two years.
Internal medicine residency
3 years
Paid hospital training in general adult medicine. This is the base every cardiologist is built on.
Cardiovascular disease fellowship
3 years
Specialist training in heart disease: clinic, imaging, the catheterization lab and the coronary care unit.
Board certification and license
After training
Certify in internal medicine and then in cardiovascular disease through the American Board of Internal Medicine, and hold a license from your state medical board.
Biology and chemistry
Required for every pre-medicine track.
Physics
On the medical school admission exam, and it explains how blood, pressure and electrical signals behave.
Calculus and statistics
Medicine runs on reading studies, and studies are statistics.
English
You will spend your career explaining frightening results to frightened people.
Each state licenses physicians through its own medical board, so there is no single national license. The examination is national: three steps of the United States Medical Licensing Examination, or the osteopathic equivalent. After training, you are certified by the American Board of Internal Medicine, first in internal medicine and then in cardiovascular disease, which is one of its twenty subspecialty disciplines. Certification is not the same thing as a license, but hospitals and insurers expect both.
Cardiology is one of the most competitive fellowships in internal medicine. You apply during residency, and programs look at your training hospital, your research, your letters and your board scores. Plenty of strong residents do not match on the first attempt and either reapply or choose another subspecialty. If you are planning for this, start looking at research opportunities in your first year of residency, not your last.
Things you don't need, but that help.
Interventional cardiology
One extra year. Opening blocked arteries with catheters and stents, including emergency heart attack cases.
Electrophysiology
One to two extra years. The heart's electrical system: pacemakers, defibrillators and ablations.
Heart failure and transplant
One extra year. Managing failing hearts, pumps and transplant patients.
Cardiac imaging
Echocardiography and advanced scans. Clinic hours, no overnight catheterization calls.
Adult congenital heart disease
Caring for adults born with heart defects, a group that keeps growing as childhood surgery improves.
Research
Cardiology fellowships weigh it heavily. Start early and stick with one project.
Shadowing
Spend a day in a catheterization lab and a day in clinic. They are very different jobs.
Comfort with emergencies
Heart attacks do not wait for office hours, and someone has to drive in at 3am.
A backup you would enjoy
Most pre-medicine students do not end up as cardiologists. Build a path you would still be happy on.
Day to day, pros and cons, where you'd work.
Round on the hospital's heart patients from about 7am, checking overnight tracings and lab results. Mid-morning in the catheterization lab in a lead apron, threading a catheter through a wrist artery to look at the vessels around the heart. Afternoon clinic: 15 or 20 patients with chest pain, high blood pressure, rhythm problems or failing hearts, mostly a conversation and a plan. Then readings, notes and phone calls. Call nights mean being available for anyone arriving with a heart attack.
The good
The hard parts
Things people don't tell you.
It has been the leading cause of death in the United States for decades, ahead of every form of cancer. That is the whole reason this specialty is so large and so well paid.
Hospitals are measured on how fast they can open a blocked artery after a patient arrives, with a target of 90 minutes. Muscle dies every minute it stays closed, which is why the catheterization team runs.
Most procedures now enter through the radial artery in the wrist instead of the groin. Recovery is faster, bleeding is easier to control, and patients can often sit up straight afterwards.
The American Board of Internal Medicine certifies nearly 300,000 physicians across twenty disciplines, from general internists and hospital doctors to cardiologists and other subspecialists.
Last checked September 2026. Pay figures are typical full-time annual amounts in United States dollars, based on Bureau of Labor Statistics wage data and published pay scales. They vary by state, employer and experience. Tuition is for in-state students at public schools unless the card says otherwise.