Our Care Team

We are proud of our exceptional clinical team of kidney and hypertension doctors and other care teams in McMinnville and Tigard that are dedicated to providing personalized and comprehensive kidney care to our patients. Click on any of the care team below to learn more about their background and credentials.

McMinnville Offices
Marilia Campos

Marilia Campos, MD

Dr. Marilia Campos grew up in San Jose, Costa Rica where she received her medical degree from Escuela Autónoma de Ciencias Médicas. She is board certified in Internal Medicine and completed her residency at Hennepin Healthcare in Minneapolis, Minnesota.

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Ryan S. Griffiths, MD

Dr. Ryan Griffiths is a native Oregonian who is happy to have the opportunity to continue to live and work here. He grew up playing sports and raising sheep and cattle in Central Oregon. His father was a large animal vet, which helped foster this hobby. After high school, he spent one year of college at Montana State in Bozeman before transferring to Oregon State University.

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Creagh Schoen, FNP, WHCNP

Creagh Schoen is a life-long Oregonian. She grew up in Eastern Oregon where she enjoyed living in a small town surrounded by the beauty of wheat fields and the Blue Mountains. She attended Oregon State University and Oregon Health Sciences University to obtain her Bachelor of Science in Nursing.

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Tigard Offices

Firas G. Khoury, MD

Dr. Firas G. Khoury, his wife and four children, live in West Linn. He and his family relocated from Pittsburgh, Pennsylvania several years ago and has been with the Oregon Kidney and Hypertension Clinic since its inception.

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Geoffrey Xiao, PA-C

Geoffrey Xiao is a nationally board certified Physician Assistant. He earned Bachelors of Science degrees from the University of California Riverside in Biochemistry and then the University of Utah in Medical Laboratory Sciences.

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Gresham Offices
Partha Raguram, MD

Partha Raguram, MD

Partha Raguram, MD, MRCPI, FASN is board-certified in internal medicine and nephrology and has been practicing for over 36 years. He received his medical degree from Madras Medical College in India and completed his internal medicine residency and nephrology fellowship at the University of Minnesota at Hennepin County Medical Center.

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