Mary S. Morris, MD, ABIM, Emeritus

Mary S. Morris, MD, ABIMDr. Mary S. Morris, or Dr. Mary as she is affectionately known to her patients, practiced at Allergy Associates of La Crosse (AAOL) from 1989 to 2020, when she retired from patient care. Previously, she served her internal medicine residency at the University of Wisconsin-Milwaukee, practiced at St. Luke’s Hospital in Milwaukee, and received her board certification in internal medicine in 1986. She and her partners at AAOL, including her late father – sublingual immunotherapy (SLIT) pioneer and board certified allergist and family practitioner David Morris, MD – authored and published the La Crosse Method™ Protocol, and have shared it with more than 2,000 physicians across the U.S. and internationally.

Dr. Mary has been a driving force toward expanding research on sublingual immunotherapy in the U.S. She has:

  • Led protocol development for a number of NIH-funded SLIT studies
  • Collaborated with leading food allergy researchers on the clinical and quality of life impact of sublingual immunotherapy on peanut allergy as well as impact on multi-antigen food treatment
  • Collaborated on a number of clinical studies including the impact of SLIT on reducing:

Dr. Morris has also lent her expertise to veterinary specialists, developing a protocol to address atopic dermatitis and allergic issues in animals, which is in broad use in the U.S. and internationally today.

In 2020, Dr. Morris retired from patient care, but she remains a partner and holds an Emeritus role at AAOL, lending her expertise to providers and staff. We’re grateful for her 30 years of patient care and her continued advocacy for treating the cause of food and environmental allergy as she continues her career.

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