Cardiology Physicians

Ahmad Damati, MD

Dr. Ahmad Damati graduated from Hashemite University (Jordan) in 2013. After completing his residency training in Internal Medicine in 2020 at the New York Medical College (Newark, NJ), he completed his Fellow in Cardiology in 2023 at St. Joseph’s University Medical Center. He joined Centennial Shaw Heart and Vascular Physicians in 2023.

Dr. Damati is a Cardiologist and is certified in BLS/ALS. He has many research publications and special interest in treating heart failure patients.

In his spare time, he enjoys playing soccer, fitness, and reading.

“My philosophy of care is to treat patients as I would my own family. Collaborating with all specialties and using the latest medical technologies and techniques to achieve the best possible outcomes.”

Gary Bronstein, MD, FACC

Dr. Gary Bronstein graduated from Stony Brook School of Medicine (Long Island) in 1996.  After completing his residency training in Internal Medicine in 1999 at University of Michigan Medical Center he received a faculty appointment at Columbia University Medical Center (NY City) where he worked as an attending physician until 2002 when he decided to focus on Cardiology and subsequently completed his cardiovascular training at NY Medical College. He joined Shaw Heart Cardiovascular Center in 2007.

His clinical interests include consultative cardiology and non-invasive cardiac imaging, including echocardiography, nuclear cardiology, and most recently Cardiac CT Angiography (which allows non-invasive diagnosis of coronary blockages).  His hobbies include mountain hiking and scuba diving.

Ibrahim Osman, MD, FACC, FSCAI

Dr. Osman is committed to excellence in providing high quality cardiovascular care, through personalized, compassionate, evidence-based, efficient patient centered care and the most comprehensive expertise available. His treatment strategy targets the disease as well as the predisposing risk factors. He hopes to learn from his patients as much as they learn from him.

Area of interests: Coronary, peripheral vascular disease, structural heart disease, percutaneous catheter based therapy for coronary, peripheral and valvular heart disease (TAVR, Mitaclip, Triclipand TMVR), congenital ASD/PFO and VSDclosure, left atrial appendage closure device therapy and cardiac implantable electronic device therapy.

Dr. Osman is affiliated with the structural heart team and high risk complex coronary intervention program at Providence St. Vincent Hospital, Portland, OR.


  • Internal medicine residency and geriatrics medicine fellowship at George Washington
    University, Washington, DC.
  • Advanced heart failure transplant fellowship and cardiovascular fellowship at East
    Carolina University, N.C.
  • Clinical cardiac electrophysiology fellowship at Oregon Health & Science University, OR
  • Advanced Interventional cardiology fellowship at Loma Linda University, CA

Board certification in ABIM (Internal medicine), ABIM (Cardiovascular disease), ABIM (Interventional cardiology) and NBE-Echocardiography

Roger Dreiling, MDCardiovascular Service Line Medical Director

Dr. Roger Dreiling graduated from University of Kansas in 1978. After completing his residency training in Internal Medicine in 1981 at the University of Kansas, he served as Medical Chief Resident and completed his Fellow in Cardiology in 1984. He joined Centennial Shaw Heart and Vascular Physicians in 2023.

Dr. Dreiling is an Interventional Cardiologist who comes to us from Providence Heart Institute in Medford, Oregon, and has had a long standing Interventional Cardiology career in Lawrence, Kansas and Corvallis, Oregon. He is Board Certified in Internal Medicine, Cardiovascular Diseases, and Interventional Cardiology. His areas of focus are coronary artery disease, heart failure, and treatment of acute myocardial infarction.

“My philosophy of care is to treat patients as I would my own family. I enjoy collaborating with primary care colleagues in the co-management of complicated primary care problems that interact with cardiovascular conditions.”

Cardiology Nurse Practitioners

Erin Cassidy, NP

Erin is a board certified Family Nurse Practitioner who has specialized in cardiovascular medicine for the greater part of her medical career. She graduated from the University of Colorado, Colorado Springs in 2005. Erin worked in emergency, hospital, and family medicine following graduation while preparing to work in cardiovascular medicine. She began working in cardiovascular medicine in Colorado in 2007. She moved to Roseburg in 2011.

She enjoys spending time with each patient. Erin’s passion is education and having a positive impact on the individuals she cares for as well as their families.  Erin believes a team approach is the best way to provide excellent comprehensive care.

Interventional Radiology Physicians

Chuck McGlade, MDInterventional Radiology Medical Director

Dr. McGlade grew up in New York State and received his premedical degree from Johns Hopkins University, Baltimore, MD, graduating Phi Beta Kappa. He received his medical degree at Cornell Medical College in New York, New York, graduating Alpha Omega Alpha. He completed both his residency and a sub-specialty fellowship in angiography at the University of California, Los Angeles where he served as chief resident.  After relocating to Eugene/Springfield, he worked for more than 25 years performing vascular interventions and minimally invasive surgery procedures.  Dr. McGlade joined Centennial Shaw Heart and Vascular Specialists in 2018 where he has introduced advanced techniques and technology to Mercy Medical Center to be able to treat Douglas County residents locally.

Interventional Radiology Physician Assistant

Michael Peterson, PA-C

Michael is a board certified physician assistant who specializes in interventional radiology and vascular medicine. He is a graduate of the OHSU School of Medicine where he earned his master’s degree in Physician Assistant Studies with a special focus on providing medical care in rural and underserved communities.

Michael is a passionate medical provider who cares deeply for his patients and colleagues, and he takes pride in educating patients about their medical conditions and involving them in their care plan. He is dedicated to a team approach in order to provide holistic care to the Roseburg community. He has a background in organ transplant and clinical medical research.

In his free time, Michael enjoys the outdoors where he can be found hunting, fishing and hiking with his wife and son.