Dr Walker brings in Medical Governance and formerly served on the board of the New Zealand Medical Association and as a member of the General Practitioner Council of the NZMA, a member of the Medicines Classifications Committee for the Ministry of Health NZ and acts as a Medical Examiner for the Royal New Zealand College of General Practitioners. Previously, she acted as a Medical Advisor to the Rua BioScience (formerly Hikurangi Hemp Company) and as Treasurer for the New Zealand Resident Doctors Association. She is a Director and Treasurer of advocacy group General Practitioners Aotearoa and acts as the Medical Director of The Cosmetic Clinic New Zealand.