California Skin Institute (CSI) started as the solo dermatologic surgery practice of Greg S. Morganroth, MD in Mountain View, California. Since 2007 CSI has grown to become the largest private practice dermatology group in California, completing over 40 mergers with outstanding dermatology and cosmetic surgery practices. With an unwavering commitment to excellence in medical, surgical, and cosmetic dermatology and plastic surgery, the group offers one of the most state-of-the-art and comprehensive skin-based service lines in the United States.