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

Dr. Kumasaka is a native Washingtonian. He grew up in West Seattle, went to University of Washington for undergraduate studies in Biology and medical school, graduating from medical school in 1988. He trained in Internal Medicine at Providence Medical Center, Portland and Virginia Mason Medical Center before returning to UW to complete his training in Dermatology. Prior to joining Valley in 2001, he practiced at Virginia Mason in Federal Way. He remains on the clinical faculty at UW Medical School and has served as the president of the Pacific Northwest Dermatological Society.

Dr. Kumasaka is board-certified in dermatology. His interests are in medical dermatology. This includes diagnosis and treatment of rashes, skin cancers and other conditions of the skin, hair and nails. He treats adults as well as children.

Dr. Kumasaka lives in Seattle with his wife and three daughters. He enjoys the outdoors, golfing, skiing and playing tennis.

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