While setting up her practice, Dr McMakin bought a microcurrent therapy device dating from 1922, an era when non-pharmaceutical therapies were not yet as strictly regulated in the United States. With the hardware came a hidden treasure, a comprehensive list of frequencies and their effects.
Based on this list, Dr McMakin began treating patients with dual-channel frequency therapy, quickly gaining valuable experience with this technique. The success was overwhelming. She started to perform comprehensive teaching and training activities for other therapists and founded her own pain clinic in Portland, Oregon.
Dr McMakin is now the leading authority and developer of Frequency Specific Microcurrent (FSM). She maintains a part-time clinical practice, participates in research and teaches seminars on the use of FSM in the United States, Australia, Ireland and Europe.