Margaret Walter. Her primary practice is as an Otolaryngology, also practicing as an Otolaryngology: Pediatric Otolaryngology, an Otolaryngology: Sleep Medicine, an Otolaryngology: Facial Plastic Surgery, an Otolaryngology: Otolaryngic Allergy, an Otolaryngology: Otology & Neurotology, an Otolaryngology: Otolaryngology/Facial Plastic Surgery, and an Otolaryngology.