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Jeffrey Breneisen, MD

Jeffrey Breneisen

NorthBay Medical Group
1860 Pennsylvania Avenue
Suite 120
Fairfield, CA
(707) 646-4400 Accepted Health Plans

Professional Profile

I take the time to get to know each of my patients. New patients should plan to spend an hour with me for their initial exam. I like to talk about prevention and health education as we develop a management plan to treat his or her illness.

I'm experienced in treating coronary artery disease and congestive heart failure. I have a special interest in minimally invasive procedures performed in the cardiac catheterization lab, including diagnostic angiography, pacemaker and defibrillator implants and the whole spectrum of electro-cardiology care.

Cardiology is evolving rapidly and I stay informed about the latest treatments available. I'm also board-certified in nuclear cardiology, which provides for the noninvasive diagnosis of coronary artery disease, the assessment of the pumping function of the heart and in the prediction of outcomes in patients with heart disease. I began my career in cardiology in the Air Force and practiced at David Grant Medical Center for several years. I was in private practice for ten years and joined the NorthBay Healthcare Specialty Practices in 2014.


Medical Degree, University of Illinois College of Medicine, Chicago, IL 

Residency in Internal Medicine, David Grant Medical Center, Travis AFB, CA

Fellowship in Cardiology, Naval Medical Center, San Diego, CA


Diplomate, National Board of Medical Examiners

Board Certified in Cardiology

Board Certified in Nuclear Cardiology

Professional Memberships:

  • American Medical Association
  • American College of Physicians
  • Society of Air Force Physicians
  • Fellow, American College of Cardiology
  • California Medical Association

Languages Spoken:


Hospital Affiliations:

NorthBay Hospital VacaValley Hospital