Sean Fitzsimmons,
PA-C

Sean Fitzsimmons grew up in Colorado Springs in a family grounded in service—his father served 22 years in the U.S. Air Force, and his mother immigrated from the Philippines and continues to serve in childcare and hospitality. As a child, he split his time between Colorado and England, skateboarding, snowboarding, and running competitively, always curious about how his surroundings and people worked.

He earned a bachelor’s degree in Integrative Physiology at the University of Colorado Boulder, gaining early clinical exposure in a sleep laboratory and developing his interest in health and medicine. After working as a medical assistant at Vanguard Skin Specialists for three years, he received top patient-satisfaction awards and discovered his passion for dermatology.

To deepen his expertise, Sean completed his master’s in physician assistant studies at Midwestern University, focusing his capstone project on current treatments for plaque psoriasis—a serious skin condition many patients face. After serving in primary care in Pueblo and Cañon City, he returned to dermatology full-time with Vanguard.

Today, he provides dermatologic care to children and adults, delivering thoughtful diagnostics, education, and treatment in conditions ranging from eczema to skin cancer. Outside of work, he enjoys cooking, car detailing, building racecars, playing board games, and spending time with his wife Caroline and their two dogs Coconut and Butter. His background, curiosity, and heart for people drive him to blend skilled dermatologic care with warm, personal connection.