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Kevin K. Oyama

Board Certifications

Anatomic and Clinical Pathology


Cascade Pacific Pathology


Cascade Pathology Services, a Sonic Healthcare Anatomic Pathology Practice,is privileged to include Kevin K. Oyama, M.D., as a member of our medical staff. Dr. Oyama has extensive hospital and laboratory experience with an impressive academic background.

Dr. Oyama graduated with a Bachelor of Science degree from the University of Oregon in Eugene. He received his medical degree from the Oregon Health & Sciences University in Portland, where he subsequently completed both a general surgery internship and an anatomic and clinical pathology residency.

Here, Dr. Oyama has also held a series of faculty appointments since completing his postgraduate training. He taught reproductive pathophysiology to medical technology students and oversaw second-year medical students in the General Pathology Laboratories. Most recently, he was a Surgical Pathology Resident Instructor at Legacy Good Samaritan Hospital in Portland, Oregon.

Additionally, Dr. Oyama has served in various key positions for hospitals and professional committees. He is currently staff pathologist, laboratory director, and member of the surgery department executive committee for Legacy Meridian Park Hospital in Tualitin, Oregon; and medical director for Olson Memorial Clinic Laboratory in Oswego, Oregon. He holds these positions concurrently with his role at Cascade Pathology Services.

Dr. Oyama currently holds full medical licensure in the states of Oregon and Washington and is board certified by the American Board of Pathology in anatomic and clinical pathology.

Dr. Oyama belongs to six professional medical societies, including the American Society for Clinical Pathologists and the College of American Pathologists. He is the author and coauthor of peer-reviewed articles and abstracts.


University of Oregon (BS) Eugene, OR
Oregon Health & Sciences University (MD) Portland, OR

Postgraduate Training

Anatomic and Clinical Pathology Residency Oregon Health & Sciences University Portland, OR

Professional Memberships

American Society for Clinical Pathology
American Society of Clinical Oncology
College of American Pathologists
Oregon Pathology Association
Portland Area Pathology Association
United States and Canadian Academy of Pathology