CardioVascular Institute of North Colorado Cardiology Clinic

1800 15th Street, Suite 310
Greeley, CO 80631

Hours Today: Closed


The CardioVascular Institute of North Colorado Cardiology Clinic offers diagnosis and comprehensive treatment of cardiac, vascular and electrophysiology disorders. Our advanced treatment options provide state-of-the-art cardiovascular services. At our clinic you can count on our multidisciplinary team of cardiologists, cardiothoracic surgeons, and vascular surgeons, to explain your treatment options thoroughly and provide each patient with an exceptional level of care.

Getting Here

Hours At This Location
8 a.m. to 5 p.m.
8 a.m. to 5 p.m.
8 a.m. to 5 p.m.
8 a.m. to 5 p.m.
8 a.m. to 5 p.m.
About Us

At the CardioVascular Institute, we realize that it’s important for you to know why we’re recommending a particular heart treatment as well as what to expect. We diagnose and treat several heart conditions, including:

  • Congestive heart failure
  • Hypertension
  • Angina
  • Heart attack
  • Atrial fibrillation
  • Valvular heart disease
  • Structural Heart Defects
  • Coronary artery disease
  • Vascular disease
  • Pulmonary hypertension

Your multidisciplinary team has access to the latest in proven heart and vascular treatments including hypercholesterolemia treatment, arrhythmia treatment, cardiac nuclear imaging and echocardiography.

We offer the latest procedures to treat heart and vascular disease. Some of our specialized therapies include:

  • Left atrial appendage occlusion for stroke prevention in atrial fibrillation
  • Patent foramen ovale, atrial septal defect and ventricular septal defect closure and repair
  • Aortic aneurysm repair
  • Catheter-based peripheral vascular disease therapy
  • Implantable monitors for managing patients with heart failure

We approach structural heart problems with a multidisciplinary team. A group of experts in interventional cardiology, cardiac surgery, nursing and cardiac imaging work together to diagnose and find the most appropriate treatment for each patient. They offer minimally-invasive and robotic-assisted surgical treatments including: 

  • Transcatheter aortic valve replacement 
  • Mitral valve repair
  • Transcatheter mitral valve replacement
  • Alcohol septal ablation for hypertrophic cardiomyopathy

Keith Volk, AGACNP


Nurse Practitioner (NP), CardioVascular Institute of North Colorado Cardiology Clinic
I strive to make each of my patients feel listened to and respected. I will ensure that you leave your visit with a complete understanding of the plan of care that we have developed together.

John Drury, MD

Structural Heart Disease Cardiology, Cardiology, Cardiac Imaging

Physician, Banner Health Clinic
I am committed to helping my patients achieve a better quality of life.

Cynthia Gryboski, MD

Interventional Cardiology, Cardiology

Physician, Banner Health Clinic
I strive to teach my patients about their health and illness in terms they can understand enabling them to play an active role in their care.