Billie Atwood, ARNP, received her Bachelor of Science degree in Nursing, and her Masters of Nursing, Family Practice from Brigham Young University in Utah. Her clinical experience includes working for a number of specialty clinics, including orthopedics, neurology, family practice and urgent care. Prior to joining the Rheumatology Clinic, Ms. Atwood managed Valley Medical Center's nationally recognized Joint Center and served as a staff nurse responsible for the care of surgical patients emerging from anesthesia.

Dr. Matthew Bremmer is originally from Oregon. After attending Oregon State University for undergraduate degree, he attended medical school at the University of Maryland. After graduating in 2008 he completed a year of Internal Medicine training at Virginia Mason Medical Center in Seattle. He returned to Baltimore for training in Dermatology at the University of Maryland. After completing his training he worked in private practice in rural Pennsylvania, prior to joining Valley.

Dr. Bremmer is Board Certified in Dermatology, and is a fellow of the American Academy of Dermatology. His interests are in medical and surgical dermatology, and he enjoys seeing adult and pediatric patients.

Dr. Bremmer and his wife live in Maple Valley. In his spare time he enjoys camping, hiking, boating, and triathlon.

Undergraduate: Oregon State University
Medical School: University of Maryland School of Medicine
Residency: University of Maryland School of Medicine

Surafel Gezahegne, MD, is board-certified in Internal Medicine, Pulmonary Diseases and Critical Care Medicine. He believes a strong patient-physician relationship is vital to patient care. He strives to provide the highest standard of care to his patients.

Dr. Gezahegne takes care of patients with lung diseases including asthma, COPD, sarcoidosis, pulmonary hypertension, interstitial lung disease and lung cancer. He performs bronchoscopy including endobronchial ultrasound (EBUS) to diagnose and stage cancer. Dr. Gezahegne also works in the intensive care unit (ICU) taking care of critically-ill patients.

Dr. Gezahegne was born and raised in Ethiopia. He moved to Washington State in 2001. He received his bachelor’s degree in microbiology and his medical degree from the University of Washington. He completed his Internal Medicine residency at Loma Linda University Medical Center in Loma Linda, California and his fellowship in Pulmonary and Critical Care Medicine at Henry Ford Hospital in Detroit, Michigan. In his spare time, Dr. Gezahegne enjoys playing soccer and racket ball as well as hiking and biking.

HOURS: 8 AM – 4:30 PM
Covington: Tuesday, Thursday, Friday
Renton: Wednesdays

Scott Lee, MD, enjoys taking care of adult and pediatric patients with a wide variety of ENT conditions. He is particularly interested in the airway, which includes sinonasal, oropharyngeal, and laryngeal disorders, plus thyroid and parathyroid surgery. Dr. Lee has also been the principal investigator in numerous research protocols, including the evaluation of tools for minimally-invasive sinus surgery, novel surgical approaches to the airway, and preoperative assessment of the airway.

Dr. Lee graduated magna cum laude from the University of Colorado with a bachelor’s degree in biochemistry. He then earned his medical degree from the University of Colorado in Denver. Next, he completed a surgery internship followed by an otolaryngology residency at Albany Medical College, where he was elected to the Alpha Omega Alpha Honor Medical Society. Dr. Lee then practiced in North Dakota and served as an Assistant Professor of Surgery with the University of North Dakota. After that, he practiced in California with privileges at Stanford, prior to joining Valley Medical Center.

Dr. Lee enjoys traveling and playing outdoors with his wife, young child, and small dog.

*Dr. Lee was voted as a Top Doctor by Seattle Met Magazine in 2019.

Reshad Mahmud, MD, MS, is a rheumatology specialist at Valley’s Renton and Covington Rheumatology clinics. He has a particular interest in autoimmunity-related lung disease, myositis, and systemic sclerosis in addition to general rheumatology.

Dr. Mahmud was born and raised in Southern California and moved east to complete a combined BS/MS/MD degree in leadership in medicine program in upstate New York that provided focus on healthcare economics, quality improvement, and clinical management. Following this, he completed an internal medicine residency program at University of Pittsburgh Medical Center where he developed his interest in rheumatology and completed a rheumatological fellowship training at University of Pittsburgh. During his spare time, he enjoys visiting national parks, enjoying live music, and exploring new cuisines.

Jeonghun (Daniel) Moon, MD, RhMSUS, provides care for a wide range of general rheumatologic conditions, which include rheumatoid arthritis, spondyloarthritis, systemic lupus erythematosus, polymyalgia rheumatica, vasculitis, gout, pseudogout, Sjogren syndrome, systemic sclerosis and myositis. He is particularly interested in musculoskeletal ultrasound evaluations and ultrasound guided interventions; diagnostic ultrasound evaluations for rheumatoid arthritis, spondyloarthritis (enthesitis) and crystal arthropathies (gout and pseudogout); assessment of inflammatory arthritis disease activity and monitoring therapeutic response; ultrasound guided aspiration and injection for accuracy, safety and better clinical outcomes.

Dr. Moon was born and raised in South Korea, and received a medical degree from Yonsei University. He completed an internal medicine training at Albert Einstein College of Medicine in Bronx, NY and a rheumatology fellowship program at University of Washington in Seattle WA. Prior to joining Valley Medical Center, he practiced rheumatology for three years at Polyclinic. He has been nominated by his peers as a rheumatologist "Top Doctor" in 2019 in Seattle Met magazine.

Sarah Sheu, MD, is a board-certified dermatologist. Her clinical interest is medical dermatology, which includes the diagnosis and treatment of skin cancers and of inflammatory skin conditions. She enjoys treating patients of all ages. Dr. Sheu spent her early life in the Midwest and attended college and medical school at Northwestern University. After graduating from medical school, Dr. Sheu completed her medical internship at Virginia Mason Medical Center and fell in love with the Seattle area during this year of her training. She completed her residency training at Stanford University and was selected as chief resident during her final year of training. After completing residency, she practiced in the Bay Area prior to joining Valley.

Dr. Sheu and her family live in Kent. In her spare time, she enjoys spending time with family and friends, hiking, fruit and vegetable gardening, baking sourdough bread, and cooking.

Pedro Trujillo, MD, earned his medical degree from the Universidad Industrial de Santander in Columbia. He performed his residency at Tulane University and a fellowship at the University of Washington.

With more than 25 years in practice, Dr. Trujillo has extensive expertise in systemic inflammatory disorders, including autoimmune and metabolic diseases manifested as crystal arthritis. He is an expert in ultrasound-guided intra-articular joint injections. Dr. Trujillo is board certified in Internal Medicine and Rheumatology and is a Fellow of the American College of Physicians.

After his fellowship in the Pacific Northwest, Dr. Trujillo traveled across the country and practiced at The Cleveland Clinic in Fort Lauderdale, FL before returning back to the Seattle area.

Board certified in cardiovascular disease, Ting-Wei Yang, MD, is skilled in invasive cardiology. Dr. Yang’s strong interest in preventive cardiology fuels his desire to partner with patients to help them achieve a path to healthy lifestyle. After 20+ years of proud active duty service in the Navy, Dr. Yang joined Valley Medical Center in 2018.

Outside work, Dr. Yang enjoys Washington’s great outdoors and on weekends is frequently seen jogging trails with his dog. He takes great joy in showing his family the world and embodies the spirit of “Yang can cook” in his pursuit of culinary excellence. While Dr. Yang is a trained classical pianist, he finds teaching his kids the piano much more painful than his own early musical education.

Education, Training & Experience

Born in Taipei, Taiwan, Dr. Yang proudly claims New Jersey as his adopted home. He studied chemical engineering at Columbia University in New York City. Commissioned as a Naval officer after college, Dr. Yang attended medical school at the Uniformed Services University of the Health Sciences in Bethesda, Maryland. He continued his training at the naval medical centers in Bethesda and Okinawa, Japan. He served his Internal Medicine residency at the Naval Medical Center in Portsmouth, Virginia and his Cardiology Fellowship at Walter Reed National Capital Military Medical Center. As a cardiologist, Dr. Yang practiced three years in Naval Hospital Jacksonville where he was recognized for exemplary patient satisfaction throughout the Navy’s cardiology community. In 2012, Dr. Yang relocated to Naval Hospital Bremerton, where he spearheaded the integration of cardiology services with Madigan Army Medical Center.