Dr. Kathleen Joyce is a board-certified dermatologist with over two decades of experience helping patients restore not only the health of their skin, but their confidence as well. As Medical Director of Medi Tresse, Dr. Joyce brings her extensive dermatologic expertise to the specialized field of hair restoration, where she focuses on identifying the root causes of hair loss and developing personalized treatment plans for women of all ages.
Dr. Ashley Lonergan

About Dr. Lonergan Hair Restoration Specialist at Medi Tresse
Elite Training & Clinical Credentials
Dr. Lonergan’s exceptional surgical skill is backed by top-tier medical education and highly specialized fellowship training:
- Specialized Fellowship: Completed intensive training in advanced hair restoration techniques and facial rejuvenation at The Williams Center for Plastic Surgery under the mentorship of industry leaders Dr. Edwin Williams and Dr. Keimun Slaughter.
- Residency Training: Completed her residency in Otolaryngology–Head and Neck Surgery at the University of California, Irvine, gaining unparalleled mastery of facial and scalp anatomy.
- Medical Degree: Earned her MD from Tufts University School of Medicine.
- Undergraduate Degree: Graduated from the University of New Hampshire, where she studied Biochemistry, Molecular, and Cellular Biology.
Core Areas of Expertise
- Surgical Hair Transplantation: Advanced FUE and FUT precision techniques.
- Non-Surgical Hair Therapies: Comprehensive medical treatments for hair thinning.
- Facial Aesthetics: Expert facial rejuvenation surgery and advanced cosmetic injectables.


