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Cardiologists in St. Louis, MO

368 listed in St. Louis, MO · Listings last verified October 2026 · How we vet listings

We list 368 cardiologists in the St. Louis area, most of them in St. Louis, Chesterfield and Bridgeton. All are physicians (MD or DO), shown with the practice's phone number, address and Google rating where we could match one. 1 practices say they offer telehealth visits. Use the filters to narrow by city, telehealth, Medicare or Medicaid.

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Linda Stronach, MD

BJC Medical Group Cardiology at Missouri Baptist Medical Center

Cardiology

Practice rating 4.8 (10 Google reviews)

Address
3023 N Ballas Rd, St. Louis 63131
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (314) 996-7272 Website Directions

Last verified Oct 2026 Report a correction

Lynne M. Seacord, MD

Washington University and Barnes-Jewish Heart& Vascular Center: Heart Care Institute

Cardiology

Practice rating 4.5 (6 Google reviews)

Address
1020 N Mason Rd, St. Louis 63141
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (314) 362-1291 Website Directions

Last verified Oct 2026 Report a correction

Madhu K. Kancherla, MD

Heart Specialty Associates

Cardiology

Practice rating 4.7 (6 Google reviews)

Address
10012 Kennerly Rd Ste 300, St. Louis 63128
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (314) 842-0602 Website Directions

Last verified Oct 2026 Report a correction

Marc A. Sintek, MD

Washington University and Barnes-Jewish Heart& Vascular Center: Heart Care Institute

Cardiology

Practice rating 4.5 (6 Google reviews)

Address
1020 N Mason Rd, St. Louis 63141
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (314) 362-1291 Website Directions

Last verified Oct 2026 Report a correction

Marc K. Lewen, DO

BJC Medical Group Cardiology at St. Peters

Cardiology

Practice rating 4.4 (5 Google reviews)

Address
10 Hospital Dr Ste 100, St. Peters 63376
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (636) 916-7272 Website Directions

Last verified Oct 2026 Report a correction

Mark A. Gdowski, MD

St. Luke's Cardiology - Heart Health Specialists

Cardiology

Practice rating 5.0 (17 Google reviews)

Address
121 Saint Lukes Center Dr Ste 303, Chesterfield 63017
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (314) 434-3278 Website Directions

Last verified Oct 2026 Report a correction

Mark R. Milunski, MD

Washington University and Barnes-Jewish Heart& Vascular Center: Heart Care Institute

Cardiology

Practice rating 4.5 (6 Google reviews)

Address
1020 N Mason Rd, St. Louis 63141
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (314) 362-1291 Website Directions

Last verified Oct 2026 Report a correction

Martin B. Ast, MD

BJC Medical Group Cardiology at St. Peters

Cardiology

Practice rating 4.4 (5 Google reviews)

Address
10 Hospital Dr Ste 100, St. Peters 63376
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (636) 916-7272 Website Directions

Last verified Oct 2026 Report a correction

In the St. Louis area

Our St. Louis listings cover the Missouri side of the metro: St. Louis County, St. Louis City, St. Charles County, Jefferson County, Franklin County and Lincoln County. Providers on the Illinois side, such as Belleville, Edwardsville and Alton, are listed under the Belleville–Metro East area.

Specialist care here is concentrated in a few large health systems: BJC HealthCare with Barnes-Jewish Hospital and Washington University physicians, Mercy, SSM Health and St. Luke's Hospital in Chesterfield. Each has clinics well beyond its main campus, so the same practice may have offices in the city, west St. Louis County and St. Charles County. Independent specialty groups practice alongside them, especially in Creve Coeur, Chesterfield and along the I-70 corridor in St. Peters, O'Fallon and Wentzville.

Most listings are in the City of St. Louis and St. Louis County, with a growing share in St. Charles County. If you live in Jefferson or Franklin County, check Festus and Washington before driving into the city.

Cardiology in the St. Louis area is anchored by the Washington University and Barnes-Jewish Heart & Vascular Center, BJC Medical Group's practice at Missouri Baptist Medical Center, Mercy, SSM Health and independent groups such as Heart Specialty Associates. Many have satellite offices in St. Charles County.

Nearby: Belleville–Metro East, IL · Columbia–Jefferson City, MO · Cape Girardeau, MO

By town

How to choose a cardiologist

A cardiologist is a doctor who diagnoses and treats conditions of the heart and blood vessels, such as high blood pressure, coronary artery disease, heart failure, abnormal heart rhythms and valve problems. Most people see one after a referral from their primary care doctor, but many practices also accept self-referred patients.

Start with the kind of heart care you need. Cardiology has subspecialties, and the right fit depends on your condition:

  • General cardiologists handle most needs: chest pain workups, blood pressure that's hard to control, cholesterol, palpitations and follow-up after a heart event.
  • Interventional cardiologists perform procedures through the blood vessels, such as stents and angioplasty.
  • Electrophysiologists specialize in heart rhythm problems such as atrial fibrillation, and implant pacemakers and defibrillators.
  • Heart failure specialists manage advanced heart failure, including medication plans and devices.

If you're not sure, a general cardiologist is the right first stop. They'll refer you on if you need a subspecialist.

Check credentials. Board certification in cardiovascular disease shows a doctor has completed specialty training and passed a certification exam. You can look up any doctor's certification for free on the American Board of Internal Medicine website [1]. Our listings show the credentials doctors report in the federal NPI registry, but we don't verify board certification.

Confirm insurance before you book. Practices change the plans they accept, so call the office or check your insurer's directory. If you have an HMO plan, you'll usually need a referral from your primary care doctor first. Medicare Part B covers medically necessary specialist visits; you typically pay 20% of the Medicare-approved amount after your deductible [3].

Think about location and hospital ties. Many cardiologists work in groups linked to a hospital system. If you may need tests or a procedure, a practice tied to a nearby hospital can keep your care in one place. Ask where they do stress tests, echocardiograms and catheterizations.

Ask about wait times and telehealth. New-patient waits for cardiology can run weeks. Ask whether there's a cancellation list, and whether follow-up visits can be done by video.

Know when not to wait. Chest pain, pressure or discomfort, shortness of breath, pain spreading to the arm, jaw or back, or sudden weakness or trouble speaking need emergency care, not an appointment. Call 911 [2].

Frequently asked questions

Do I need a referral to see a cardiologist?

It depends on your insurance. Most HMO plans require a referral from your primary care doctor before they'll cover a specialist visit. PPO plans and traditional Medicare usually don't. Even without a requirement, some cardiology practices ask for a referral or your recent test results, so call ahead and ask what to bring.

What happens at a first cardiology appointment?

Expect a review of your symptoms, medical history, family history and medications, a physical exam, and often an electrocardiogram (ECG). The cardiologist may order more tests, such as an echocardiogram, a stress test or a heart monitor you wear at home. Bring a list of your medications and any recent lab or test results.

What's the difference between a cardiologist and a cardiac surgeon?

A cardiologist diagnoses and treats heart conditions with tests, medication and procedures done through the blood vessels, such as stents. A cardiac surgeon performs open operations, such as bypass surgery or valve replacement. Most people start with a cardiologist, who refers them to a surgeon only if surgery is needed.

Does Medicare cover cardiologist visits?

Yes. Medicare Part B covers medically necessary visits to specialists, including cardiologists, as long as the doctor accepts Medicare. You typically pay 20% of the Medicare-approved amount after the Part B deductible. Medicare Advantage plans cover the same visits but may require referrals and in-network doctors.

How do I know if a cardiologist is board certified?

Look the doctor up on the American Board of Internal Medicine's free "Verify a Physician" tool, which shows whether they're certified in cardiovascular disease and its subspecialties. Our listings show the credentials doctors report to the NPI registry, but we don't verify certification ourselves.

Sources

  1. American Board of Internal Medicine — Verify a physician's certification
  2. American Heart Association — Heart attack and stroke symptoms
  3. Medicare.gov — Doctor & other health care provider services (Part B)