Percy Balderia MD, RhMSUS

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Accepting New Patients

Board Certification

Subspecialty Board of Rheumatology, American College of Rheumatology’s Musculoskeletal Ultrasound Certification, American Board of Internal Medicine


Dr. Percy Balderia received his medical degree at the University of the Philippines Manila College of Medicine, where he was Valedictorian, Magna Cum Laude. He completed an internal medicine residency at Albert Einstein Medical Center in Philadelphia and a rheumatology fellowship at the University of Washington School of Medicine.

Career Influence

"Choosing rheumatology is one of the best decisions I have ever made. On a daily basis, I develop lasting relationships with my patients and help them manage their conditions long-term. Thanks to recent therapeutic breakthroughs, rheumatologists can have a tremendous impact on patients and better prevent disability than ever before. This field energizes me because even while our understanding of diseases has vastly grown, there is still a lot we do not know. I enjoy guiding patients through these uncertainties."

Clinical Interests

Dr. Balderia’s practice focuses on rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, Crohn’s disease/ulcerative colitis-associated arthritis, gouty arthritis, systemic lupus erythematosus, and poly/dermatomyositis.

Personal Interests

Outside of practice, Dr. Balderia enjoys spending time with family, cooking, hiking, and doing volunteer activities.

Practice Philosophy

"Primum non nocere – 'first, do no harm.' With the growing number of new tests and therapies available at our disposal and on the horizon for rheumatologic conditions, my role is to help patients decide which ones, if any, are evidence-based and most appropriate for them."


English, Tagalog


The Arthritis Foundation Fellow AY 2017-2018


Dr. Balderia Discusses Gouty Arthritis on KOMO Radio

Dr. Balderia Discusses Rheumatoid Arthritis