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Dr. Mark Semis, MD is a Doctor primarily located in Colusa, CA. He has 43 years of experience. His specialties include Family Medicine and Emergency Medicine. Dr. Semis is affiliated with Colusa Regional Medical Center, California Pacific Medical Center - St Luke's Campus and Mercy Hospital. He speaks English.


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Locations & Directions

Colusa Regional Medical Center

199 E Webster St
Colusa, CA 95932

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