Dr. Ryan R. Mertens

Katrina Guest is a Pulmonary Medicine provider practicing medicine in West Des Moines, Iowa. Dr. Guest is highly rated in 13 conditions, according to our data. Her clinical expertise encompasses Lung Metastases, Chronic Obstructive Pulmonary Disease (COPD), Obstructive Sleep Apnea, Pneumonia, and Advanced Bronchoscopy. Dr. Guest is currently accepting new patients.

Ryan Brimeyer is a Pulmonary Medicine provider practicing medicine in West Des Moines, Iowa. Dr. Brimeyer is highly rated in 20 conditions, according to our data. His clinical expertise encompasses Lung Metastases, Chronic Obstructive Pulmonary Disease (COPD), Pleurisy, Advanced Bronchoscopy, and Gastrostomy. Dr. Brimeyer is board certified in American Board Of Internal Medicine - Pulmonology, American Board Of Internal Medicine, and American Board Of Internal Medicine - Critical Care Medicine. Dr. Brimeyer is currently accepting new patients.

Steven Berry is a Pulmonary Medicine provider practicing medicine in Clive, Iowa. Dr. Berry is highly rated in 2 conditions, according to our data. His clinical expertise encompasses Lung Metastases, Chronic Obstructive Pulmonary Disease (COPD), Asthma in Children, and Asthma.

Matthew Wessling, ARNP, joined The Iowa Clinic Pulmonary department because of the reputation of excellence in healthcare. During his time as a nurse and in clinical rotations, Matthew had the opportunity to work with many TIC providers, which gave him a great understanding of the excellent care they provide to patients. He chose Pulmonary and Sleep Medicine because he enjoys the opportunity to establish a relationship with patients over time, and to challenge himself in a field that is always growing and evolving. For Matthew, seeing patients grasp an understanding of their current health situation and providing them with the tools they need to better their health is something he finds most rewarding. Outside of work, Matthew enjoys spending time with his family and friends, golfing, and cheering on the Iowa Hawkeyes and St. Louis Cardinals. If he was not a provider, he might have been a sports journalist or broadcaster. Dr. Wessling is highly rated in 1 condition, according to our data. His clinical expertise encompasses Obstructive Sleep Apnea, Narcolepsy, Central Sleep Apnea, and Excessive Daytime Sleepiness. Dr. Wessling is currently accepting new patients.

Steven Zorn is a Pulmonary Medicine provider practicing medicine in West Des Moines, Iowa. Dr. Zorn is highly rated in 3 conditions, according to our data. His clinical expertise encompasses Obstructive Sleep Apnea, Excessive Daytime Sleepiness, Idiopathic Hypersomnia, and Central Sleep Apnea. Dr. Zorn is currently accepting new patients.

Jason Wittmer is a Pulmonary Medicine provider practicing medicine in Des Moines, Iowa. Dr. Wittmer is highly rated in 24 conditions, according to our data. His clinical expertise encompasses Chronic Obstructive Pulmonary Disease (COPD), Lung Metastases, Obstructive Sleep Apnea, Advanced Bronchoscopy, and Ureteroscopy. Dr. Wittmer is currently accepting new patients.