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Infectious Diseases, Travel Medicine, Wound Care
English, Spanish
Practice Name
EvergreenHealth Infectious Disease Care
Primary Address
12303 NE 130th Lane, Suite Coral 120
Kirkland, WA 98034
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Primary Phone
Primary Fax
Practice Website
Clinical Expertise
HIV medicine and co-infections, Hepatitis C expert, Tropical Medicine, Infections in the immunocompromised patient, bone, soft tissue and post-operative infections.
Board certified in Infectious Disease and Internal Medicine
Practicing Since
Dr. Diego Lopez de Castilla has successfully treated over a 100 patients with chronic hepatitis C. He is an expert in prevention and treatment of infections.
My goal is to understand and address my patient's concerns. By applying the most current medical evidence, I partner with you to develop a treatment plan that best fits your individual needs.
Personal Information
I love traveling with my wife and two children, whether it is visiting family scattered across the globe or discovering new destinations. I enjoy cooking/eating Peruvian and Mediterranean food. I'm a master scuba diver, triathlete and ironman, and play soccer, F1.
Medical School
Universidad Peruana Cayetano Heredia | Lima, Peru
Beth Israel Medical Center | New York, NY
University of Washington, Infectious Diseases | Seattle, WA
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Patient Satisfaction Reviews


37 patients rated this physician.

The Provider Rating score is an average of all responses to care provider related questions on our nationally-recognized Patient Satisfaction Survey. Responses are measured on a scale of 1 to 5 with 5 being the best score.

Provider Explanations Easy to Understand
Provider Listened Carefully
Provider Gave Easy to Understand Instructions
Provider Knew Medical History
Provider Showed Respect

Patient Comments (6 comments)

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of EvergreenHealth.

Reviewed on January 7, 2019

Dr. Lopez de Castilla provided exceptional care for me this year with thorough, patient, deliberate attention to treat some puzzling symptoms. He was unfailingly clear, courteous, competent, and personable. I am grateful.
Reviewed on December 10, 2018

Dr. Diego Lopez de Castilla Koster is personable, very knowledgeable about all aspects of travel medicine & gives full attention to patient questions.
Reviewed on September 24, 2018

I appreciate her thorough the doctor was and his friendly manner.
Reviewed on September 7, 2018

Best provider out of 23 providers seen this year, this one has been best one yet!
Reviewed on September 5, 2018

He is an exceptional doctor!