Dr. Brett Williams was born and raised in Comanche, Oklahoma, a small town in southern Oklahoma where almost everyone made their living by farming, ranching or in the oil industry. He graduated from the University of Oklahoma in l978 with a Bachelor of Arts Degree, majoring in Psychology. He graduated from medical school at the University of Oklahoma Health Science Center in l982 and completed his general surgery residency at Cornell University in 1987 and his cardiovascular and thoracic surgical fellowship at State University of New York in Brooklyn in l990. After graduation, he had multiple opportunities to join practices in large metropolitan areas as well as university settings. However, he was intrigued by the “Last Best Place” and ultimately decided to establish his practice in Cardiovascular and Thoracic surgery in Great Falls, Montana in September 1990. He has provided continuous coverage in these specialties since that time. During those 28 years, Dr. Williams has championed innovations in surgical technique and technology to be able to provide state of the art care with surgical outcomes that consistently lead the region and the nation. Some of the innovations that were introduced by Dr. Williams to Central Montana include off pump coronary artery bypass grafting procedures, complex mitral valve repair, complex aortic root reconstruction and valve preservation, transmyocardial laser revascularization of the heart, minimally invasive valve surgery, minimally invasive coronary artery revascularization, surgical correction of atrial fibrillation, minimally invasive vascular surgery, minimally invasive thoracic surgery. He was one of the first surgeons to provide outpatient treatment with endovascular laser therapy for varicose veins. Dr. Williams is Board Certified by the American Board of Thoracic Surgery. A Fellow of the American College of Surgeons and a member of the Society of Thoracic Surgeons. Dr. Williams is rated as a Distinguished provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Carotid Artery Disease, Thoracic Aortic Aneurysm, Abdominal Aortic Aneurysm (AAA), Carotid Artery Surgery, and Heart Bypass Surgery.

Bennett Dykstra is a Vascular Surgeon and a General Surgeon in Kalispell, Montana. Dr. Dykstra is rated as a Distinguished provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Carotid Artery Disease, Abdominal Aortic Aneurysm (AAA), Arterial Insufficiency, Carotid Artery Surgery, and Hernia Surgery. Dr. Dykstra is currently accepting new patients.

John Craig is a General Surgeon and a Vascular Surgeon in Kalispell, Montana. Dr. Craig is rated as a Distinguished provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Carotid Artery Disease, Arterial Insufficiency, Peripheral Artery Disease, Carotid Artery Surgery, and Colostomy. Dr. Craig is currently accepting new patients.

Michael Rohrer is a Vascular Surgeon in Missoula, Montana. Dr. Rohrer is rated as a Distinguished provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Gangrene, Carotid Artery Disease, End-Stage Renal Disease (ESRD), Arterial Embolism, and Carotid Artery Surgery. Dr. Rohrer is currently accepting new patients.

P O'brien is a Vascular Surgeon in Missoula, Montana. Dr. O'brien is rated as a Distinguished provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Arterial Insufficiency, Carotid Artery Disease, and Carotid Artery Surgery. Dr. O'brien is currently accepting new patients.

Garth Olds is a General Surgeon in Bozeman, Montana. Dr. Olds is rated as a Distinguished provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Carotid Artery Disease, Carotid Artery Surgery, and Hernia Surgery. Dr. Olds is currently accepting new patients.

William Hull is a Cardiologist in Anaconda, Montana. Dr. Hull is rated as an Experienced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Angina, Atrial Fibrillation, Sick Sinus Syndrome, and Atherosclerosis. Dr. Hull is currently accepting new patients.

Bradley Berry is a Cardiologist in Missoula, Montana. Dr. Berry is rated as an Experienced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Cardiomyopathy, Bicuspid Aortic Valve, Angina, and Atherosclerosis. Dr. Berry is currently accepting new patients.

William Harper is a General Surgeon and a Vascular Surgeon in Helena, Montana. Dr. Harper is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Carotid Artery Disease, Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Parathyroidectomy, and Carotid Artery Surgery. Dr. Harper is currently accepting new patients.

Dr. Ritchie offers the full complement of cardiology services including arterial catheterization; temporary pacemakers; conventional and stress echocardiography, transesophageal echocardiography as well as exercise and pharmacologic stress testing. He also brings his expertise in all aspects of coronary angioplasty, including structural heart disease such as closure of atrial septal defects, balloon valvuloplasties; and peripheral angiography (AAA endovascular stent grafts, renal artery stents), DCA, rotablator, brachytherapy, IVUS and physiologic lesion assessment. Dr. Ritchie is board certified in Internal Medicine, Cardiovascular Diseases and Interventional Cardiology. Dr. Ritchie completed his undergraduate work at the University of Evansville, where he played baseball for three years. He attended medical school at Indiana University, where he graduated with highest honors in 1986. He then went on to complete his residency at Case Western Reserve School of Medicine in Cleveland in 1989. From there, he went on to complete his fellowship at Washington University in Saint Louis, where he performed clinical rotations while receiving interventional training. In his spare time Dr. Ritchie enjoys hiking, fishing, hunting, biking and spending time with friends and family. Dr. Ritchie is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Atrial Septal Defect (ASD), Patent Foramen Ovale, Unstable Angina, Carotid Artery Disease, and Pacemaker Implantation.

Robert Mitchell is a Cardiologist and a Vascular Surgeon in Kalispell, Montana. Dr. Mitchell is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Atrial Fibrillation, Aortic Regurgitation, Arrhythmias, Pediatric Myocarditis, and Pacemaker Implantation. Dr. Mitchell is currently accepting new patients.

Mark Morasch is a Vascular Surgeon in Great Falls, Montana. Dr. Morasch is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Thoracic Aortic Aneurysm, Carotid Artery Disease, Abdominal Aortic Aneurysm (AAA), Carotid Artery Surgery, and Aneurysm Repair. Dr. Morasch is currently accepting new patients.

Jeffrey Horn is a Vascular Surgeon in Billings, Montana. Dr. Horn is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Thoracic Aortic Aneurysm, Carotid Artery Disease, Arterial Embolism, and Carotid Artery Surgery. Dr. Horn is currently accepting new patients.

Robert Hancock is a Vascular Surgeon and a General Surgeon in Billings, Montana. Dr. Hancock is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Varicose Veins, Diverticular Disease, Abdominal Aortic Aneurysm (AAA), Carotid Artery Surgery, and Hernia Surgery. Dr. Hancock is currently accepting new patients.

Carlos Albrecht is a Cardiologist in Butte, Montana. Dr. Albrecht is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Angina, Arterial Embolism, Arrhythmias, Sick Sinus Syndrome, and Pacemaker Implantation. Dr. Albrecht is currently accepting new patients.

Steven Bailey is a Thoracic Surgeon in Great Falls, Montana. Dr. Bailey is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Hiatal Hernia, Carotid Artery Surgery, and Coronary Artery Bypass Graft (CABG).

Thomas Desmarais is a Vascular Surgeon in Billings, Montana. Dr. Desmarais is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Thoracic Aortic Aneurysm, Abdominal Aortic Aneurysm (AAA), Mesenteric Artery Ischemia, and Carotid Artery Surgery.

Dr. Jorge (pronounced “George”) Castriz is a board certified interventional cardiologist. Dr. Castriz offers the full complement of cardiology services including arterial catheterization, biventricular pacing, temporary pacemakers, conventional and stress echocardiography as well as exercise and pharmacologic stress testing. He also brings his expertise in all aspects of peripheral angiography and coronary angioplasty (AAA endovascular stent grafts, renal artery stents, angioplasty, DCA, rotablator, brachytherapy, IVUS and physiologic lesion assessment). Dr. Castriz is board certified in Internal Medicine, Cardiovascular Diseases and Interventional Cardiology and is a fellow of the American College of Cardiology. Prior to joining the Great Falls Clinic in 2013, Dr. Castriz maintained an active practice with the Cardiovascular Medical Specialists of the Palm Beaches in Jupiter, Florida. Prior to that, Dr. Castriz owned a private practice in Palm Beach Gardens, Florida for nine years. Dr. Castriz received his medical degree from the University Central Del Este in the Dominican Republic. He completed his internship and residency in Internal Medicine, and his fellowship in Interventional Cardiology at the University of Oklahoma Health Science Center in Oklahoma City, OK. Dr. Castriz is rated as an Advanced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Angina, Coronary Heart Disease, Heart Attack, Metabolic Syndrome, and Pacemaker Implantation.

Heather Hall is a Vascular Surgeon in Billings, Montana. Dr. Hall is rated as an Experienced provider by MediFind in the treatment of Carotid Artery Disease. Her top areas of expertise are Idiopathic Edema, Gangrene, Arterial Insufficiency, Peripheral Artery Disease, and Carotid Artery Surgery. Dr. Hall is currently accepting new patients.

Stewart Long is a Thoracic Surgeon in Missoula, Montana. Dr. Long is rated as an Experienced provider by MediFind in the treatment of Carotid Artery Disease. His top areas of expertise are Pleurisy, Pleural Effusion, Mitral Valve Regurgitation, Coronary Artery Bypass Graft (CABG), and Heart Valve Repair. Dr. Long is currently accepting new patients.