Derek Nickerson, MDJohannah Valentine, MDRossitza Lazova, MDGregory Henderson, MDAli Lashgari, MD

Derek Nickerson, MD

Derek Walter Nickerson, MD, FAAD is a board-certified dermatologist and ACMS fellowship-trained Mohs micrographic surgeon specializing in skin cancer removal and complex surgical reconstruction. As a board-certified dermatologist, he is an expert in hair, skin, and nail disorders and their treatments. Dr. Nickerson is thrilled to provide surgical, medical, and cosmetic services to the larger…
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Johannah Valentine, MD

Johannah Kone Valentine, M.D. is a board-certified dermatologist and is committed to providing exceptional care for the health of your skin. Known for her caring bedside manner, she specializes in general, pediatric and surgical dermatology. Additionally, she has expertise in cosmetic dermatology, scar treatment and advanced dermoscopy. In her free time, Dr. Valentine enjoys spending…
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Rossitza Lazova, MD

Dr. Rossitza Lazova is a nationally and internationally-recognized, board-certified dermatopathologist and is the Director of Dermatopathology. She graduated from Sofia Medical University, Sofia, Bulgaria, in 1985. She trained and became board-certified in Clinical Pathology in Bulgaria, immigrated to the United States, and completed a residency in Anatomic and Clinical Pathology at the University of Rochester…
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Gregory Henderson, MD

Dr. Gregory Henderson is board-certified in dermatology, and sees patients of all ages. He treats medical and surgical conditions of the skin and hair, including acne, eczema, psoriasis, rashes and skin cancer, and strives to provide the highest quality care to every patient. He always welcomes the opportunity to explain diagnoses and treatment plans to…
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Ali Lashgari, MD

Dr. Ali R. Lashgari is a board-certified dermatologist who’s been practicing dermatology, dermatologic surgery and cosmetic dermatology since 1996.  Dr. Lashgari received his Bachelor of Science with honors from Caltech in Pasadena, CA.  He next received his Medical Degree from University of California at San Diego (UCSD) and did his medical internship training at Yale New Haven…
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