Leffell is an internationally recognized expert in skin cancer and the Mohs technique, plastic reconstruction, and new technologies in dermatology.
Surgery | surgery | Coronary artery bypass surgery | plastic surgery | Orthopedic surgery | Plastic surgery | Bachelor of Medicine, Bachelor of Surgery | Cardiothoracic surgery | Oral and maxillofacial surgery | Craniofacial surgery | Tommy John surgery | Telepathic Surgery | Plastic Surgery | Pediatric Surgery | Bachelor of Surgery | Reconstructive surgery | Pediatric surgery | Journal of Bone and Joint Surgery | Eye surgery | Ethicon Endo-Surgery | Vascular surgery | University of Santo Tomas Faculty of Medicine and Surgery | orthopedic surgery | oral and maxillofacial surgery | Microfracture surgery | Dental Surgery | Baltimore College of Dental Surgery | Bachelor of Medicine/Bachelor of Surgery | Bachelor of Ayurveda, Medicine and Surgery | American Board of Surgery |
He has served as the president of the American Board of Dermatology, the American Society of Dermatopathology, the American Society for Mohs Surgery and the Texas Dermatological Society.