After graduating from medical school at the University of Washington, Dr. Johnson completed his residency at Maine Medical Center in Portland, ME. Board certified in internal medicine. Dr. Johnson enjoys spending his time off camping, hunting and boating. Dr. Johnson is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, and Chronic Obstructive Pulmonary Disease (COPD).

Dr. Malters became a physician with a single goal in mind: to provide the patients he treats with the opportunity for a better quality of life. His goal is to engage every patient so that they understand and participate in their medical care.A graduate of UCLA School of Medicine, Dr. Malters completed his residency at the prestigious Cedars-Sinai Medical Center. He is board-certified in internal medicine. Outside of the office, Dr. Malters enjoys traveling and spending time outdoors, where he hunts and hikes. Dr. Malters is rated as an Experienced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Urinary Tract Infection in Children, Urinary Tract Infection (UTI), Myasthenia Gravis, Hip Replacement, and Endoscopy.

Dr. Gerbasi is a graduate of the University of Washington School of Medicine and completed the Montana Family Medicine Residency Program. His patients appreciate his approach in talking about all aspects of their wellness, including physical mental, social and more. He is respectful, attentive and takes the time to get to know his patients. Dr. Gerbasi is rated as an Experienced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Myelodysplastic Syndrome (MDS), Sepsis, Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, and Endoscopy.

Dr. Stroebe grew up in Colstrip, Montana. She earned her undergraduate degree from Carroll College in Helena, Montana and received her medical degree from the Pacific Northwest University of Health Sciences � College of Osteopathic Medicine in Yakima, Washington. Dr. Stroebe completed an internal medicine residency with Legacy Health System in Portland, Oregon. After her residency, Dr. Stroebe worked as a hospitalist and internal medicine provider in Washington state. As a board certified physician her clinical interests include chronic disease management, women�s health, preventive medicine, obesity management and rheumatology. Dr. Stroebe�is passionate about helping patients to understand their chronic health conditions, how and why we treat these conditions, and how to live a fulfilling life with their chronic health conditions.�Each patient is different and has their own story to tell. Each disease state is the same but affects each patient in a different way. I feel I am a good listener, problem solver, and critical thinker which allows me to not only treat the disease but treat the whole patient.�Happy to be back home in Montana, Dr. Stroebe enjoys spending time with her husband and their three children. Family is the center of everything she loves doing. Dr. Stroebe is rated as an Experienced provider by MediFind in the treatment of Pneumonia. Her top areas of expertise are Type 2 Diabetes (T2D), Vertigo, Sciatica, Low Potassium Level, and Hip Replacement.

Born and raised in Billings, Montana, Dr. McNamer completed her residency at Montana Family Medicine. She was drawn to working with St. Vincent Healthcare because of its faith-based philosophy. She loves the culture of Montana, knowing that through hard times and adverse circumstances, Montanans are always there as a neighbor and a friend.Dr. McNamer�s approach to patient care incorporates treating the whole person through the entire spectrum of life. She appreciates the interesting, intimate, and special experiences with people every day, and believes in patient choice and shared decision-making between the provider and patient.Dr. McNamer loves to take advantage of the beautiful Montana outdoors and mountains through hiking, trail running, skiing, and hanging out with her dogs. She believes that Montana is a unique community and values that she is able to give back. Dr. Mcnamer is rated as an Experienced provider by MediFind in the treatment of Pneumonia. Her top areas of expertise are Acute Hepatic Porphyria (AHP), Porphyria, Hypertension, and Glucocorticoid-Remediable Aldosteronism.

Dale Agner is a primary care provider, practicing in Family Medicine in Billings, Montana. Dr. Agner is rated as an Experienced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Type 2 Diabetes (T2D), Chronic Obstructive Pulmonary Disease (COPD), Sepsis, Alcoholic Cirrhosis, and Endoscopy. Dr. Agner is currently accepting new patients.

Mark Welch is a primary care provider, practicing in Internal Medicine in Libby, Montana. Dr. Welch is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Pneumonia, Heart Attack, End-Stage Renal Disease (ESRD), Endoscopy, and Pacemaker Implantation.

Gregory Lemense is a Pulmonary Medicine specialist and an Intensive Care Medicine provider in Bozeman, Montana. Dr. Lemense is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Lung Nodules, Lung Metastases, Interstitial Lung Disease, Acute Interstitial Pneumonia, and Endoscopy.

Michael Herring is a primary care provider, practicing in Internal Medicine in Bozeman, Montana. Dr. Herring is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Pneumonia, Diabetic Neuropathy, Chronic Cough, Vertigo, and Endoscopy. Dr. Herring 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 Advanced provider by MediFind in the treatment of Pneumonia. 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.

Timothy Obermiller is a Pulmonary Medicine provider in Kalispell, Montana. Dr. Obermiller is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Lung Metastases, Lung Nodules, Chronic Obstructive Pulmonary Disease (COPD), and Grass Allergy. Dr. Obermiller is currently accepting new patients.

John Mazur is a Pulmonary Medicine provider in Great Falls, Montana. Dr. Mazur has been practicing medicine for over 39 years and is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Lung Metastases, Sarcoidosis, Atypical Pneumonia, Hospital-Acquired Pneumonia, and Advanced Bronchoscopy.

Andrew Sullivan is a Pulmonary Medicine provider in Bozeman, Montana. Dr. Sullivan is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Interstitial Lung Disease, Small Cell Lung Cancer (SCLC), Acute Interstitial Pneumonia, Endoscopy, and Gastrostomy.

Sue Fessler is a Pulmonary Medicine specialist and an Intensive Care Medicine provider in Columbia Falls, Montana. Dr. Fessler is rated as an Advanced provider by MediFind in the treatment of Pneumonia. Her top areas of expertise are Lung Metastases, Chronic Cough, Lung Nodules, and Chronic Obstructive Pulmonary Disease (COPD). Dr. Fessler is currently accepting new patients.

Gyorgy Mundruczo is a Pulmonary Medicine specialist and an Intensive Care Medicine provider in Bozeman, Montana. Dr. Mundruczo is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Interstitial Lung Disease, Acute Interstitial Pneumonia, Lung Metastases, Pneumonia, and Gastrostomy. Dr. Mundruczo is currently accepting new patients.

Frederick Kahn is a Pulmonary Medicine specialist and an Infectious Disease provider in Billings, Montana. Dr. Kahn has been practicing medicine for over 45 years and is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Lung Nodules, Pulmonary Fibrosis, Lung Metastases, and Cellulitis. Dr. Kahn 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 Advanced provider by MediFind in the treatment of Pneumonia. Her top areas of expertise are Lung Metastases, Pulmonary Veno-Occlusive Disease, Interstitial Lung Disease, and Pulmonary Hypertension.

Andrew Goldberg is a Pulmonary Medicine provider in Bozeman, Montana. Dr. Goldberg is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Lung Metastases, Chronic Obstructive Pulmonary Disease (COPD), Bronchiectasis, and Chronic Cough. Dr. Goldberg is currently accepting new patients.

Keith Popovich is a Pulmonary Medicine provider in Butte, Montana. Dr. Popovich is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Obstructive Sleep Apnea, Lung Metastases, Chronic Obstructive Pulmonary Disease (COPD), and Emphysema. Dr. Popovich is currently accepting new patients.

Robert Grasseschi is a Pulmonary Medicine specialist and an Intensive Care Medicine provider in Great Falls, Montana. Dr. Grasseschi is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Lung Metastases, Pulmonary Veno-Occlusive Disease, Bronchogenic Cyst, Gastrostomy, and Endoscopy. Dr. Grasseschi is currently accepting new patients.