Mary Landau, M.D.

About Me

Mary Landau, M.D.

My name is Mary Elizabeth Landau. I grew up in West Virginia. I went to undergraduate at the University of North Carolina in Chapel Hill, and from there went to medical school at Duke University. I graduated from Duke University in 1993 and then went on to do my residency and my fellowship at Washington University in St. Louis. I continued migrating west and ended up in Arizona.
I was working in a large hospital setting, and my fellowship training is in skin pathology, and I always wanted to do exclusively skin pathology. I had heard about Arizona Dermatology for years as I have been in the Valley and knew the reputation and was just very fortunate when a position opened up.
I read the skin biopsies for the dermatologist and providers. I am responsible for the diagnosis of cancers, not cancer, dysplastic nevi, actinic keratosis, sun-related skin damage, inflammatory disorders. Pretty much anything that gets biopsied, I'm the person that they come to, to see what the final answer is.
I have found that not only is this a very academic environment, with very educated physicians and providers, but also it's an incredibly happy, family-oriented place where people come and stay for a long time, and it's the kind of practice you want to stay in.

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Where I Practice


My Training & Credentials

Undergraduate & Medical
University of North Carolina at Chapel Hill, Bachelor of Science in Biological Science
Duke University Medical School
Residency and fellowship training at Washington University in St. Louis, Missouri 
Professional Societies
  • American Board of Pathology combined Anatomic and Clinical Pathology – Board Certified
  • American Board of Dermatology and Pathology in Dermatopathology – Board Certified
  • Arizona Society of Pathologists – Fellow
  • College of American Pathologists (CAP) – Fellow
  • American Society of Clinical Pathologists (ASCP) – Fellow
  • American Society of Dermatopathology (ASDP) - Fellow


Conditions I Specialize In Treating