William A Kay, MD | Cardiology | Mercy Health - The Heart Institute, Fairfield
Mercy Health Provider

William A Kay, MD

Cardiology

Accepting New Patients

Meet William

I am trained in both adult and pediatric cardiology, and I love the variety of seeing the full spectrum of heart disease. I am especially interested in congenital and valvular heart diseases, as well as preventive cardiology. I see teenagers 13 and up who have concerns about their heart, and I speak Spanish fluently. I enjoy serving Hispanic patients and doing visits with them in their native language.

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Insurances Accepted

Information is subject to change without notice. Please contact your insurance provider for confirmation.

  • Aetna Better Health OH
  • Aetna Commercial & Aetna Medicare OH
  • AmeriHealth Caritas Medicaid OH
  • Anthem Elevance Health KY & OH
  • Buckeye Health Plan OH
  • CareSource OH
  • Cigna OH
  • CIN-MHS NON-MSSP
  • CommuniCare Medicare Advantage OH
  • Devoted Health Medicare Advantage OH KY
  • Direct Health Connect/H2B OH
  • Essence Lumeris OH
  • Frontpath Health Coalition OH
  • HealthSmart OH
  • Healthspring Medicare Advantage OH
  • Humana Military KY & OH
  • Humana OH
  • Immergrun OH
  • Medicaid KY
  • Medicaid OH
  • Medical Mutual of Ohio
  • Medicare OH
  • Medicare Railroad KY & OH
  • Medigold OH
  • Molina Medicare & Medicaid OH
  • Multiplan OH
  • Ohio Health Choice
  • Paramount Elite Medicare Advantage OH
  • Payer Provider
  • Perennial Medicare Advantage OH
  • Quality Care Partners PPO OH
  • Sagamore OH
  • Sedgwick/Careworks KY OH SC VA
  • The Health Plan OH
  • Three Rivers Health Plan OH
  • United Healthcare OH
  • USA MCO OH
  • Valor Health Plan OH
  • Wellcare Meridian MI

Ratings & Reviews

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Overall Score

4.9 out of 5 224 ratings, 32 reviews

Patient Reviews

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October 2025
Dr. Kay is so knowledgeable and approachable
October 2025
All good
October 2025
Better than expected from doctor to his nurse
October 2025
Good
October 2025
Patient care is great
October 2025
Dr Kay is so kind and knowledgeable!
October 2025
The Physician was very attentive, face to face contact, informative, caring, humorous, knowledgeable! Dr. William Aaron Kay explained thoroughly for me to completely understand!
September 2025
Doctor listen to my history and answer my questions. Cool doctor