Cardiology

Cardiology

You can now find the expert care of St. Joseph Hospital Cardiologists at St. Joseph Heritage Medical Group (SJHMG). With a breadth of experience spanning the areas of cardiovascular disease, women's heart disease and coronary heart disease, the Cardiology Department of SJHMG provides the expertise to treat the most severe conditions as well as provide ongoing preventive care.

Affiliated with St. Joseph Hospital, the physicians of the Department of Cardiology at SJHMG are at the top of their field. Warren Johnston, MD, serves as co-director of the Women's Heart Center and Dr. Thomas Kim is the medical director of non-invasive cardiology at St. Joseph Hospital.

We specialize in the prevention and treatment of a broad spectrum of heart diseases, ranging from artery blockage disease to heart failure to heart rhythm abnormalities. Our board certified cardiologists include imaging specialists, an electrophysiologist, and interventional cardiologists who offer today's most comprehensive, cutting edge approaches to the diagnosis and treatments of heart disease that is tailored to each patient's specific needs.

Whatever level of care is needed—education, prevention, diagnosis, treatment or rehabilitation—we're experts in your heart's good health. Our partnership with St. Joseph Hospital ensures we offer the entire spectrum of services, from highly effective cardiac wellness programs to state-of-the-art cardiac catheterization labs and hybrid operating room that allow the newest, lifesaving procedures.

Our physicians are currently accepting new patients. To make an appointment or for more information, call (714) 543-5555.


Meet our cardiology experts (l to r): Brian Kim, MD; Donald Mahon, MD; Warren Johnston, MD; Thomas C. Kim, MD; and Michael Chan, MD. Not pictured, David Pan, MD.

View Our Locations

Orange - 1140 W. La Veta Ste. 770

Tustin - Irvine Blvd.

Meet Our Doctors

Michael Y. Chan, MD (714) 543-5555
Cardiology (Board Certified)
Cardiovascular Disease (Board Certified)
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Office :
1140 W. La Veta Ave.
Suite 430
Orange, CA 92868
Warren D. Johnston, MD (714) 543-5555
Cardiology (Board Certified)
Cardiovascular Disease (Board Certified)
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Office :
1140 W. La Veta Ave.
Suite 430
Orange, CA 92868
Thomas C. Kim, MD (714) 543-5555
Cardiology (Board Certified)
Cardiovascular Disease (Board Certified)

Mon - Fri: 9 a.m. - 5 p.m.

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Office :
1140 W. La Veta Ave.
Suite 430
Orange, CA 92868
Brian Kim, MD (714) 543-5555
Cardiac Electrophysiology (Board Certified)
Cardiology (Board Certified)
Cardiovascular Disease (Board Certified)
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Office :
1140 W. La Veta Ave.
Suite 430
Orange, CA 92868
Donald J. Mahon, MD (714) 543-5555
Cardiology (Board Certified)
Cardiovascular Disease (Board Certified)
Interventional Cardiology (Board Certified)
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Office 1:
1140 W. La Veta Ave.
Suite 430
Orange, CA 92868

Office 2:
23141 Moulton Pkwy.
Suite 109
,
David Pan, MD (714) 543-5555
Cardiology (Board Certified)
Cardiovascular Disease (Board Certified)
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Office :
1140 W. La Veta Ave.
Suite 430
Orange, CA 92868
Aidan R. Raney, MD (714) 543-5555
Cardiology (Board Certified)
Cardiovascular Disease (Board Certified)
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Office :
1140 W. La Veta Ave.
Suite 430
Orange, CA 92868