Timothy Gardner is a Gastroenterologist in Great Falls, Montana. Dr. Gardner is rated as an Advanced provider by MediFind in the treatment of Systemic Sclerosis (SSc). His top areas of expertise are Chronic Pancreatitis, Hereditary Pancreatitis, Acute Pancreatitis, Pancreatectomy, and Islet Cell Transplantation.

Steven Chrzanowski is a primary care provider, practicing in Internal Medicine in Great Falls, Montana. Dr. Chrzanowski is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). His top areas of expertise are Glucocorticoid-Remediable Aldosteronism, Hypertension, Familial Hypertension, and High Cholesterol.

Thomas Addison is a primary care provider, practicing in Geriatrics and Internal Medicine in Great Falls, Montana. Dr. Addison is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). His top areas of expertise are Idiopathic Edema, Generalized Tonic-Clonic Seizure, Trichohepatoenteric Syndrome, and Anemia. Dr. Addison is currently accepting new patients.

Kelly Timmer is a Nurse Practitioner in Great Falls, Montana. Ms. Timmer is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). Her top areas of expertise are Systemic Sclerosis (SSc), Menopause, and Intrauterine Device Insertion. Ms. Timmer is currently accepting new patients.

Vijay Agarwal is a Gastroenterologist in Great Falls, Montana. Dr. Agarwal is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). His top areas of expertise are Gastrointestinal Bleeding, Intestinal Cancer, Hiatal Hernia, Endoscopy, and Colonoscopy.

Chad Reihm is a Radiologist in Great Falls, Montana. Dr. Reihm is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). His top areas of expertise are Melorheostosis with Osteopoikilosis, Melorheostosis, Osteopenia, and Breast Lump.

Kathleen Blair is a primary care provider, practicing in Internal Medicine in Great Falls, Montana. Dr. Blair is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). Her top areas of expertise are Shingles, Diabetic Neuropathy, Obesity in Children, and Urinary Incontinence. Dr. Blair is currently accepting new patients.

Gabor Varju is a Pulmonary Medicine specialist and a Sleep Medicine provider in Great Falls, Montana. Dr. Varju is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). His top areas of expertise are Lung Metastases, Chronic Obstructive Pulmonary Disease (COPD), Asthma, and Asthma in Children. Dr. Varju is currently accepting new patients.

Ryan Boer is a primary care provider, practicing in Family Medicine in Great Falls, Montana. Dr. Boer is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). His top areas of expertise are Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Chronic Pain, and Familial Hypertension. Dr. Boer is currently accepting new patients.

Rayhaan Akram is a Rheumatologist in Great Falls, Montana. Dr. Akram is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). His top areas of expertise are Raynaud Phenomenon, Rheumatoid Arthritis (RA), Rheumatoid Vasculitis, and Axial Spondyloarthritis (AxSpA). Dr. Akram is currently accepting new patients.

Dr. Sisk is an experienced pulmonologist who has provided pulmonary care since 2018. Dr. Sisk has a special interest in bridging urban and rural healthcare access. In 2004, Dr. Sisk earned her Bachelor’s of Science in Biology from Missouri Western State University. Dr. Sisk graduated with her Doctor of Osteopathy in 2011 from Kansas City University of Medicine. Dr. Sisk completed her Pulmonary Critical Care Fellowship in 2018. She continued her education with a Masters of Healthcare Administration from Virginia Commonwealth University in 2019. After completing her medical degree, Dr. Sisk worked as a nocturnal hospitalist. Dr. Sisk has participated in many medical missions in developing countries to establish and provide care in rural communities. Before joining the Great Falls Clinic team, she was a pulmonary/critical care physician in Colorado, a physician assistant program instructor and a medical director for a nonprofit located in Mozambique, Africa. In her spare time, Dr. Sisk enjoys spending time in nature including hiking, camping, fishing and exploring, always with a canine sidekick. She loves international travel, hosting friends and family for good food and golf. Dr. Sisk is rated as an Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). Her top areas of expertise are Lung Metastases, Pulmonary Veno-Occlusive Disease, Interstitial Lung Disease, and Pulmonary Hypertension.

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 Experienced provider by MediFind in the treatment of Systemic Sclerosis (SSc). His top areas of expertise are Angina, Coronary Heart Disease, Heart Attack, Metabolic Syndrome, and Pacemaker Implantation.