California Dermatology Group PC California Dermatology Group, PC is a Dermatology practice in Santa Barbara, CA with healthcare providers who have special training and skill in diagnosing and treating children and adults with benign and malignant skin, hair, nail diseases. Dermatologists at California Dermatology Group, PC perform medical diagnosis and treatment of skin cancers, management of inflammatory skin disorders, and diagnosis of skin manifestations of systemic and infectious diseases. Dermatology is a branch of medicine dedicated to diagnosing and treating dermal infections, diseases, and cosmetic disorders.