Welcome to the website and medical portal for Dr. Marcus L Williams, M.D. This website will introduce you to state of the art cardiovascular clinical practice, cutting edge cardiovascular research and practical education on relevant topics related to heart disease.

Your health is the number one priority. A board certified invasive cardiologist, Dr. Williams works at his own private practice Horizon Cardiology.  He provides primary and urgent care, offering a full range of services that address acute and chronic cardiac related illnesses, such as acute heart attack, unstable angina, congestive heart failure and life threatening arrhythmia. A complete list of services can be found in clinical services.

In the future, you will also be able to access the ongoing clinical trials in cardiovascular research performed by Dr. Williams and his research team through Horizon Research Unlimited. They are committed to high quality, cutting edge research that will enhance the outcomes of and benefits to patients with heart disease in the community.