Why choose a Fellowship Trained Mohs surgeon? Mohs surgeons complete the same residency program as all Board Certified Dermatologists but also engage in extensive additional training specifically in the treatment and management of skin cancers, including interpretation of pathology and reconstructive surgery. However, not all dermatologists who perform Mohs surgery have completed an approved Procedural Dermatology/Mohs fellowship. CLICK HERE to learn why it is important to choose a FELLOWSHIP TRAINED Mohs SURGEON, like Dr. Whalen.