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Meet Dr. Penzi

Dermatologist in New York and New Jersey

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Lauren Penzi, MD, is an experienced dermatologist with the team at MDCS Dermatology: Medical Dermatology & Cosmetic Surgery. Dr. Penzi welcomes patients at the practice’s locations in Commack, Plainview, and Hampton Bays, New York.

Dr. Penzi completed her bachelor’s degree in biology and mathematical sciences at Loyola University Maryland, where she graduated summa cum laude. She went on to finish her medical degree at New York Medical College in Valhalla, where she was a member of the Alpha Omega Alpha honors society. After graduating, Dr. Penzi completed an internal medicine preliminary internship at NYU Winthrop Hospital in Mineola, New York, before pursuing an alopecia clinical and research fellowship at Massachusetts General Hospital in Boston. She then furthered her training with a dermatology residency at Johns Hopkins Hospital in Baltimore, Maryland.

Dr. Penzi is a member of various academic and professional organizations, including the Phi Beta Kappa Honor Society, American Academy of Dermatology, American Society for Dermatologic Surgery, Society for Pediatric Dermatology, American Society for Laser Medicine & Surgery, and the Women’s Dermatologic Society.

In addition to her clinical training, Dr. Penzi has been published in numerous peer-reviewed medical journals and presented her research findings at various medical conferences and additionally has authored a book chapter on emergency dermatology.


Dr. Lauren Penzi is a board-certified dermatologist who specializes in medical and cosmetic dermatology. Dr. Penzi’s training and credentials set her apart as a premier dermatologist on Long Island. She attended New York Medical College, where she was admitted to the prestigious Alpha Omega Alpha honor society for graduating in the top 10% of her medical school class. She completed her intern year at NYU Winthrop Hospital and went on to complete her dermatology residency training at the renowned Johns Hopkins Hospital. Additionally, Dr. Penzi also spent a year at Harvard Dermatology for a hair loss fellowship at Massachusetts General Hospital. Throughout her training, Dr. Penzi has made many notable research contributions, and has been published in some of the top dermatology journals including JAMA Dermatology, as well as the Journal of the American Academy of Dermatology. She continues to stay at the forefront of dermatologic education and research in order to provide the best care to her patients.

Dr. Penzi is dedicated to the health and beauty of her patients’ skin. She prioritizes preventative measures to combat both skin cancer and aging. Dr. Penzi treats patients of all ages and has a special interest in acne, rosacea, skin cancer, eczema, psoriasis, and hair loss. She believes in a personalized, comprehensive, and natural approach to cosmetic dermatology. She enjoys performing a wide range of cosmetic procedures including neurotoxins, fillers, platelet rich plasma injections, and cutting-edge laser treatments.

Dr. Penzi was born and raised on Long Island, NY, where she now resides with her husband and son. She is thrilled to be able to practice dermatology in her hometown. Dr. Penzi welcomes patients at the Plainview, Commack, and Hampton Bays locations.