Dr. Gan Dunnington

Dr. Gan Dunnington

Location
Adventist Health St. Helena
6 Woodland Road, St. Helena, CA 94574
Phone
(‍707) 744-3842
Doctor

About Dr. Gan Dunnington,
Heart Surgeon

Hello! My name is Dr. Gan Dunnington and I am a cardiac surgeon having graduated from Virginia Commonwealth University School of Medicine in 2001. To date, I have performed approximately 4,000 cardiac surgeries, of which 1,500 involved heart valve procedures. I regularly perform surgery at Adventist Health St. Helena. Read more...

5 Stars

4 Patient Reviews for
Dr. Dunnington

"Dr. Dunnington is one of the best doctors we've met! Very friendly and clear communication. Him and his scheduler team made this surgery super heart-warming and easy to go through! Thanks again Dr. Dunnington and team!"

-- Maria Arenas, Pulmonary Valve and Sternotomy, 02/13/2026

"He explained everything very clearly with confidence. The surgery was a success and I am doing fine!!"

-- Richard Martin, Aortic Valve, Mitral Valve, Valve Repair, Valve Replacement and Sternotomy, 11/01/2017
My Specialities

My Specialities &
Clinical Interests

My heart surgery specialties include:

  • Minimally invasive mitral valve repair
  • Ross procedure for aortic valve replacement
  • Valve and atrial fibrillation surgery

In addition, I have research and clinical interests specific to:

  • Surgical Atrial Fibrillation Ablation
  • Surgical Pulsed Field Ablation
Education

Education, Training & Certificates

Dr. Gan Dunnington, heart surgeon, graduated from Virginia Commonwealth University School of Medicine in 2001.

After medical school, Dr. Dunnington completed his Surgical Internship at the Medical College of Virginia in 2002 and his Post Graduate Year 2 in general surgery at the Medical College of Virginia in 2003. Next, Dr. Dunnington completed a Post Doctoral Fellowship in Cardiothoracic Surgery at Stanford University in 2004 followed by a Clinical Cardiac Surgery Fellowship for the El Camino Hospital Cardiac Surgery Division of the Stanford Cardiothoracic Surgery Department in 2005. Dr. Dunnington completed his General Surgery Residency at Stanford in 2008, where he was named Chief Resident of Surgery, and a Cardiothoracic Surgery Fellowship at the University of Virginia in 2010.

Dr. Dunnington is board-certified by the American Board of Surgery and the American Board of Thoracic Surgery.

Schedule Appointment

Schedule Appointment with Dr. Gan Dunnington, MD

To schedule an appointment with Dr. Dunnington, you can:

The office of Dr. Dunnington is located at 6 Woodland Road, St. Helena, California 94574. To get driving directions to this office, please click the map below.

Page last updated: March 23, 2026