Dr. Stephen A. Williams is a Board Certified medical oncologist and hematologist. He earned his medical doctorate at the University of Texas Health Science Center in San Antonio, TX. He completed internship and residency at Johns Hopkins University/Sinai Hospital of Baltimore, MD, and subspecialty fellowships in Medical Oncology and Hematology at Georgetown University Hospital/Washington Hospital Center in Washington, DC, including training at the Washington Cancer Institute, the Georgetown Lombardi Cancer Center, and the National Heart, Lung, and Blood Institute at the National Institute of Health in Bethesda, MD.

Dr. Williams came to Roseburg in 2007 to provide patients with personalized, comprehensive care for cancer and blood disorders in a compassionate setting. In addition to his clinical practice, Dr. Williams is president of the Steelhead Specialty group and has served on several local health care boards, including those of DCIPA and Umpqua Health.

Dr. Joshua M. Weese is a Board Certified medical oncologist who is also trained in hematology. He has a Bachelor of Science in Physics and Mathematics from Southern Nazarene University. He completed a Master of Business Administration at LeTourneau University. Prior to medical school, he worked in the Allergy/Immunology department at Oklahoma Medical Research Foundation, engaged in research to better understand the underlying genetic and molecular abnormalities of autoimmune disease. Dr. Weese graduated with his medical degree from the University of Oklahoma in 2007, followed by Internal Medicine residency, also at the University of Oklahoma. Dr. Weese completed his Medical Oncology fellowship training at the state of the art Stephenson Cancer Center at the University of Oklahoma. While in training, he participated in clinical trial research from phase 0 thru phase III drug development. Dr. Weese also authored a study evaluating the impact of type 2 diabetes on the development of kidney failure in patients treated with cisplatin, a commonly used chemotherapeutic. Dr. Weese serves as the Chairman of the Joint Cancer Committee. He is also the Executive Vice President and Treasurer of Steelhead Specialty Group.

Sara Ray is a Board Certified Family Nurse Practitioner. She earned her degree from Gonzaga University in Spokane, Washington in 2018.  Born and raised in Douglas County, Sara earned her Associates Degree in Nursing at Umpqua Community College. She has worked in oncology since 2011 serving as a Radiation Oncology nurse as well as Director of Nursing Services for the Community Cancer Center. She transitioned into her role as a Nurse Practitioner at Steelhead Oncology in 2019. She holds a Master’s Degree in Nursing Leadership and Management as well as an Oncology Certification in Nursing.

In addition to her clinical practice, Sara serves on the Board of Directors for Douglas County Cancer Services and leads the Annual Tea and Fashion Show fundraising event.

Valerie Cooper is a Board-Certified Family Nurse Practitioner. She has a Bachelor of Science in Nursing from Southwestern Adventist University in Keene, Texas. She worked 9 years as a Registered Nurse in both the Emergency Department and Intensive Care Unit. She graduated with her Master of Science in Nursing from Gonzaga University in 2020. Valerie was raised in Roseburg, Oregon and returned in 2016 to settle down in an area surrounded by mountains. She transitioned her care from a bedside critical care nurse into her role as a Nurse Practitioner at Steelhead Oncology in 2021 and is currently working towards her Advanced Oncology Nurse Practitioner Certification. She places important value on patient education and a patient led and team-guided approach to oncology care. When not working, Valerie enjoys travel, hunting, anything outdoors, and spending time with her family and dog.