Katrina Flowers-Piercy is a board-certified Physician Assistant and the founder and CEO of LISSÈ Medical Aesthetics, established in 2013. She earned her Master of Clinical Health Sciences from the University of Washington School of Medicine Physician Assistant Program and holds a Bachelor of Science in Nursing from Pacific Lutheran University.

With over 20 years of clinical experience, Katrina brings a diverse and rigorous medical background spanning trauma surgery, acute care surgery, and emergency medicine. She has extensive experience in high-acuity settings, where she contributed to surgical critical care protocol development, provider education, and interdisciplinary leadership initiatives. Throughout her career, she has developed comprehensive training programs for medical providers and served in numerous leadership, committee, and board roles, advocating for the Physician Assistant profession.

Katrina has served as Clinical Associate Faculty at the University of Washington School of Medicine since 2018, where she has trained and mentored numerous medical professionals, underscoring her strong commitment to both clinical excellence and education.

Katrina’s interest in aesthetic medicine began during a plastic and reconstructive surgery rotation in 2011, where she developed a strong foundation in facial anatomy. She subsequently advanced her training through the American Academy of Facial Aesthetics, completing both foundational and advanced certification programs in aesthetic injectables. Her practice focuses on regenerative medicine, longevity medicine, and advanced aesthetic techniques, integrating evidence-based approaches to optimize both health and confidence.

Through extensive operating room experience, including first-assisting trauma and facial plastic surgeons, Katrina has developed exceptional expertise in facial anatomy, which is fundamental to delivering safe and effective aesthetic outcomes.

In 2013, Katrina founded her concierge injectable practice, LISSÈ Aesthetics & Therapeutics, inspired by a high-performing aesthetic clinic in New York City where she trained. Built on a foundation of clinical excellence and a patient-centered philosophy, the practice has grown organically through referrals and reputation. Today, LISSÈ Medical Aesthetics is recognized among the top 1% of clinics nationwide by Galderma and operates two locations in the greater Pacific Northwest.

Dedicated to lifelong learning, Katrina has completed over 2,600 hours of continuing medical education in aesthetic medicine since 2012. Her philosophy centers on delivering natural, refined results that empower patients to feel confident and aligned with their best selves.

Throughout her career, Katrina has led and contributed to numerous impactful initiatives, including the development of a new graduate medical professional training programs, co-chairing the implementation of a “Code Neuro” protocol at Tacoma General Hospital, and playing an integral role in the design and transition of a new emergency department facility. She also secured grant funding to support Emergency Nurse Certification for more than 200 nurses system wide, and led a frontline disaster relief medical mission team in Haiti following the 2010 earthquake.

Beyond her clinical work, Katrina is dedicated to advancing community health and opportunity through VP Charities, which she co-founded. Her philanthropic efforts have supported numerous organizations, including Swing for a Soldier, Food 4 All, Peninsula Public Schools and athletic programs, Fish Food Bank, and the Mary Bridge Festival of Trees, along with initiatives centered on youth education. She also provides direct support each year by adopting 10 families during the holiday season. In 2026, she further extended her impact by founding the LISSÈ Clinical Excellence Perpetual Scholarship for students pursuing science-based careers.

She developed a laser tattoo removal program within her local women’s correctional facility, providing services to trauma-impacted individuals. She also serves on the board of Tournakits for Kids and volunteers teaching Stop the Bleed throughout the community.

Outside of her professional endeavors, Katrina enjoys an active lifestyle that includes travel, skiing, boating, and hiking, highlighted by her summit of Mount Rainier. She is also an avid supporter of the Seattle Seahawks. Above all, she values time spent with her husband and three children.

Locations: Gig Harbor