Nathan E. Millikan, MD

Nathan E. Millikan, MD

Cardiology, Internal Medicine, Hospital Medicine
Medical Group
Ascension Medical Group
Ascension Medical Group Ascension Medical Group
Languages Spoken


Nathan E. Millikan, MD, is a cardiologist at Ascension St. Vincent in Winchester and Anderson, Indiana. Dr. Millikan takes the time to listen to understand you and your health to deliver personalized, compassionate heart and vascular care that’s right for you. He specializes in diagnosing all types of cardiovascular disease. He provides preventive cardiology care to manage high blood pressure and cholesterol, heart attack and stroke risk factors, AFib heart rhythm disorders, and congestive heart failure. Dr. Millikan works with you to create a personalized care plan. Our cardiovascular specialists are part of a national team of doctors, sharing best practices and offering evaluation and treatment of the most complex heart conditions. Ask about virtual visits as part of your ongoing care. 

Whether you have new symptoms or want to talk to a heart doctor about a heart disease diagnosis, Dr. Millikan is here for you. Care for your heart shouldn’t wait. He has a special interest in preventive cardiology, and diagnosing and treating congestive heart failure, coronary and valvular heart disease. And you’ll have an entire heart care team dedicated to your physical and emotional health needs.   Outside the office, Dr. Millikan enjoys being involved with Young Life Ministry, sporting activities and collecting Pepsi memorabilia.  



  • Indiana University School of Medicine


  • University of Cincinnati College of Medicine


  • Iu Health Ball Memorial Hospital


Hospital Affiliations

  • Ascension St. Vincent Anderson
  • Ascension St. Vincent Carmel
  • Ascension St. Vincent Fishers
  • Ascension St. Vincent Heart Center
  • Ascension St. Vincent Hospital - Indianapolis
  • Ascension St. Vincent Randolph


  • The American Board of Internal Medicine - Cardiovascular Disease
Professional Statement
I am passionate about cardiology. I have been honored to practice cardiology for more than 20 years. I strive to inform and educate my patients about their individual diseases in a way that is understandable.
- Nathan E. Millikan, MD


Nathan E. Millikan, MD offers services at multiple Indiana locations. Contact your preferred location to book an appointment.
Why Ascension
Ascension doctors are committed to getting to know you. They take time for real back-and-forth conversations with you so they can understand all aspects of you and your life. Because great care starts with seeing your whole picture.
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