Welcome to 450derm.com. We are a downtown San Francisco dermatology practice that focuses on the health and beauty of our patients? skin and the treatment of skin disease. Healthy, radiant skin is an achievable goal and we would like to help you realize it. Dr. Macgregor is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. His top areas of expertise are Trichoepithelioma, Multiple Familial Trichoepithelioma, Syringocystadenoma Papilliferum, and Sebaceous Adenoma.

Certified as a fellow of the American Board of Dermatology since 1989, she has enthusiastically practiced dermatology for over twenty years. Her areas of interest lie within pediatric and adult medical dermatologic problems, wound care and skin cancer exams and prevention. Dr. Tuffanelli is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Atopic Dermatitis, Actinic Keratosis, Rosacea, and Spider Angioma.

Jeffrey North is a Dermatologist in San Francisco, California. Dr. North is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. His top areas of expertise are Sebaceous Adenoma, Extramammary Paget Disease, Basal Cell Skin Cancer, Melanoma, and Tissue Biopsy.

Boris Bastian is a Laboratory Medicine provider in San Francisco, California. Dr. Bastian is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. His top areas of expertise are Melanoma, Giant Congenital Melanocytic Nevus, Familial Atypical Multiple Mole Melanoma Syndrome, and Neurocutaneous Melanosis.

Judy Ng is a Dermatologist in San Francisco, California. Dr. Ng is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Atopic Dermatitis, Spider Angioma, Telangiectasia, and Plaque Psoriasis.

Jenna Lester is a Dermatologist in San Francisco, California. Dr. Lester is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Graham-Little-Piccardi-Lassueur Syndrome, Autosomal Recessive Hypotrichosis, Actinic Keratosis, and Alopecia Areata.

Timothy Berger is a Dermatologist in San Francisco, California. Dr. Berger is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. His top areas of expertise are Bullous Pemphigoid, Dermatitis Herpetiformis, Prurigo Nodularis, and Lichen Simplex Chronicus.

Kanade Shinkai is a Dermatologist in San Francisco, California. Dr. Shinkai is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Pyoderma Gangrenosum, Cellulitis, Bullous Pemphigoid, and Acute Febrile Neutrophilic Dermatosis.

Ilona Frieden is a Pediatrics specialist and a Dermatologist in San Francisco, California. Dr. Frieden is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are PHACE Syndrome, Hemangioma, Aplasia Cutis Congenita, and Ectodermal Dysplasias.

Nina Botto is a Dermatologist in San Francisco, California. Dr. Botto has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Contact Dermatitis, Actinic Keratosis, Intertrigo, and Pyoderma Gangrenosum.

Jack Resneck is a Dermatologist in San Francisco, California. Dr. Resneck is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. His top areas of expertise are Nummular Eczema, Actinic Keratosis, Neurocutaneous Melanosis, and Familial Atypical Multiple Mole Melanoma Syndrome.

Raymond Cho is a Dermatologist in San Francisco, California. Dr. Cho is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. His top areas of expertise are Actinic Keratosis, Neurocutaneous Melanosis, Familial Atypical Multiple Mole Melanoma Syndrome, and Giant Congenital Melanocytic Nevus.

Laura Pincus is a Dermatologist in San Francisco, California. Dr. Pincus is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Mycosis Fungoides, T-Cell Lymphoma, Cutaneous T-Cell Lymphoma (CTCL), Basal Cell Skin Cancer, and Tissue Biopsy.

Jennifer Lee is a Dermatologist in San Francisco, California. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Exfoliative Dermatitis, Griscelli Syndrome, Dyschromatosis Universalis Hereditaria, and Dyschromatosis Symmetrica Hereditaria.

Ryan Arakaki is a Dermatologist in San Francisco, California. Dr. Arakaki is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. His top areas of expertise are DRESS Syndrome, Bullous Pemphigoid, Goodpasture Syndrome, and Hypersensitivity Vasculitis.

Kieron Leslie is a Dermatologist in San Francisco, California. Dr. Leslie is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. His top areas of expertise are Kaposi Sarcoma, Psoriasis, Genital Warts, and Warts.

Amanda Twigg is a Dermatologist in San Francisco, California. Dr. Twigg is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Neurocutaneous Melanosis, Giant Congenital Nevus, Giant Congenital Melanocytic Nevus, and Familial Atypical Multiple Mole Melanoma Syndrome.

Matthew Mansh is a Dermatologist in San Francisco, California. Dr. Mansh is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. His top areas of expertise are Melanoma, Actinic Keratosis, Warts, Comedones, and Hormone Replacement Therapy (HRT). Dr. Mansh is currently accepting new patients.

Elizabeth Zettersten is a Dermatologist in San Francisco, California. Dr. Zettersten is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Melanoma, Liver Spots, Universal Acquired Melanosis, and Familial Atypical Multiple Mole Melanoma Syndrome.

Lindy Fox is a Dermatologist in San Francisco, California. Dr. Fox is rated as an Experienced provider by MediFind in the treatment of Pigmented Purpuric Dermatosis. Her top areas of expertise are Perniosis, DRESS Syndrome, Liver Spots, and Universal Acquired Melanosis.