Meet William J. Mast, FNP-BC at Preferred Dermatology

For more information or to schedule an appointment, contact us today. We proudly serve patients from Allen, TX, Anna, TX, Celina, TX, Denton, TX, Forney, TX, Greenville, TX, Lewisville, TX, McKinney, TX, Rockwall, TX, Sherman, TX, Sulphur Springs, TX, and Waxahachie, TX, and surrounding areas.

William J. Mast, FNP-BC

William J. Mast, FNP-BC
Family Nurse Practitioner

William J. Mast, FNP-BC, is a board-certified Family Nurse Practitioner seeing patients at our Sherman and Greenville locations. He earned his Bachelor of Science in Nursing from the University of Texas at Tyler and his Master of Science in Nursing from the University of Texas at Arlington. William brings over 10 years of trauma nursing experience along with more than 10 years of dermatology nursing experience, including extensive work in Mohs surgery. His broad clinical background allows him to deliver comprehensive, patient-centered dermatology care with a strong focus on skin cancer screenings, acne treatment, and overall skin health. William is committed to providing compassionate, high-quality care while helping patients feel informed and confident in their treatment plans.

Education and Training

William Mast, FNP-BC, is a board-certified Family Nurse Practitioner with extensive experience in both trauma and dermatology care. He earned his Bachelor of Science in Nursing from the University of Texas at Tyler and his Master of Science in Nursing from the University of Texas at Arlington.

William brings over 10 years of trauma nursing experience, along with more than 10 years of dermatology nursing experience, including extensive work in Mohs surgery. His diverse clinical background allows him to provide comprehensive, patient-centered dermatology care with a strong emphasis on safety, precision, and long-term skin health.

Organizations and Memberships

William Mast is a member of the following professional organizations:

• Texas Nurse Association
• American Nurses Credentialing Center

Personal Interests

William was raised in North Texas and spent the majority of his time in Bonham as a child. He is eager to serve the community and improve the health of patients all around. He loves spending time with his wife, daughter, and son and enjoys all activities outside, and is very involved in his local church as well.