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Clinics By Medical Specialty

Cardiovascular and Thoracic Surgery

University of Colorado Health Cardiothoracic Surgery brings together four board-certified cardiovascular and thoracic surgeons with more than 100 years of experience. We deliver world-class care to patients in need of quality surgical treatment for conditions of the heart, lungs and blood vessels. Our team performs twice as many cardiac surgeries as any hospital program in northern Colorado, with a combined heart surgery total of well over 15,000. We have also performed thousands of vascular and thoracic procedures resulting in positive patient outcomes.

Our board-certified surgeons and mid-level providers are dedicated to the most appropriate and advanced treatment of the heart, lungs, chest, esophagus and major blood vessels of the body. At University of Colorado Health, patients and their families can expect an experienced and compassionate team focused on providing the best possible patient experience during what are often the most difficult of medical circumstances.

Clinic locations

Loveland Clinic
Medical Ctr. of the Rockies
South Medical Office Building
Suite 100
Loveland, CO 80538

Longmont Clinic
6800 N. 79th St., Suite # 203
Niwot, CO 80503

Estes Park Clinic
555 Prospect Ave.
Estes Park, CO 80517

Steamboat Springs Clinic
940 Central Park Dr.
Steamboat, CO 80487

Fort Morgan Clinic
1000 Lincoln St.
Fort Morgan, CO 80701

Laramie Clinic
3116 Willet Dr.
Laramie, WY 82070

Craig Clinic
785 Russel St.
Craig, CO 81625

Sterling Clinic
620 Iris Dr.
Sterling, CO 80751

Meet our surgeons

Dr. Mark B. Douthit, FACS Dr. Thomas L. Matthew, FACS
Dr. Mark Guadagnoli, FACS Dr. Michael Stanton, FACS


Cardiac surgical procedures

     Thoracic procedures

     Vascular procedures




  • Surgical treatment of conditions affecting the chest including infections and malignancies.
  • Thoracic oncology including cancer of the lung, esophagus and lymph nodes.
  • Lung cancer staging and mediastinoscopy.
  • Resection of lung cancers including advanced and difficult resections (ie: sleeve resection).
  • Thoracotomy.
  • Video assisted thoracic surgery (VATS).
  • Minimally invasive thoracic surgery.
  • Robotically-assisted thoracic surgery.




  • Aortic arch surgery.
  • Management and treatment of aortic dissections.
  • Open and endovascular treatment of aortic aneurysms of the chest and abdomen.
  • Carotid endarterectomy.
  • Peripheral vascular surgery for occlusive disease femoropopliteal bypass.





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Awards and Recognition

University of Colorado Health employees dedicate themselves to providing patients and other customers with world-class care and service. Outside organizations recognize that, calling University of Colorado Health's hospitals some of the best in Colorado and even the best in the nation. Some of those accolades are listed below:



University of Colorado Health
Fort Collins, Colorado


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