Phionah holds an LLB (Moi University), a Postgraduate Diploma in Law (Kenya School of Law), and an LLM in Intellectual Property and Competition Law (Munich Intellectual Property Law Center). She is a member of the Kenyan Bar with a special interest in research and policy development, particularly in the areas of Intellectual Property Law, Competition Law, and Information Privacy. She is currently focusing on research in the areas of pharmaceutical patents and health data privacy.