William T. Long, MD, FAAD, is a double board-certified physician and a highly respected dermatologist with more than three decades of experience. Known for his clinical expertise, thoughtful approach, and deep knowledge of dermatology, Dr. Long is a trusted provider for patients seeking comprehensive care in New York City.
Dr. Long sees patients at Manhattan Dermatology’s two convenient locations in Murray Hill and Midtown East, offering medical and surgical dermatology services designed to protect and improve skin health at every stage of life.
About Dr. William T. Long
Dr. William T. Long is recognized as an expert across the full range of dermatology, from diagnosing and treating chronic skin conditions to identifying suspicious lesions and supporting skin cancer prevention. As a double board-certified physician, he brings a unique depth of medical understanding to dermatologic care, helping patients manage not only skin symptoms but also underlying factors that may affect overall health.
Patients appreciate Dr. Long’s calm, steady approach and his commitment to providing care that is clear, thorough, and personalized.
Education and Advanced Medical Training
Dr. Long earned his medical degree from Georgetown University School of Medicine in Washington, DC. After medical school, he moved to New York City for postgraduate training, completing both his internship and internal medicine residency at Mount Sinai Hospital.
He then pursued advanced specialty training and completed a second residency in dermatology at NYU Langone Medical Center, one of the nation’s most respected dermatology programs. This combination of internal medicine and dermatology training supports his well-rounded approach to skin health.
Double Board Certification and Professional Credentials
Dr. Long is board certified by:
- The American Board of Internal Medicine
- The American Board of Dermatology
He is also a Fellow of the American Academy of Dermatology (FAAD) and maintains membership with the American Society for Dermatologic Surgery, reflecting his commitment to staying current with the latest advancements in dermatologic care and treatment techniques.
Academic Leadership at NYU
In addition to caring for patients in the clinic, Dr. Long has played a major role in training future physicians. He has taught medical students and dermatology residents at NYU School of Medicine for more than 30 years, serving as a professor and clinical educator.
This long-standing academic role reflects not only his expertise, but also his dedication to advancing the field and ensuring that dermatology care continues to improve through education and evidence-based practice.
Care at Manhattan Dermatology
At Manhattan Dermatology, Dr. Long provides comprehensive dermatology care with a focus on prevention, diagnosis, and long-term skin health management. He works closely with patients to develop treatment plans that are both effective and realistic, helping them maintain healthy skin over time.
Patients commonly see Dr. Long for:
- Routine skin exams and skin cancer screening
- Evaluation of moles, growths, and changing spots
- Management of chronic skin conditions
- Dermatology care for adults and families
- Surgical dermatology services when needed
Dr. Long also practices alongside his daughter, Dr. Wendy Long Mitchell, a fellowship-trained Mohs micrographic surgeon, allowing patients to benefit from a team approach for advanced skin cancer care.