Mary P. Horan M.D., M.S.

Mary P. Horan M.D., M.S.


  • English


  • Asthma
  • Lung disease (pulmonary)


Dr. Horan practices pulmonary and critical care medicine with Northwest Respiratory Associates on the Northwest Hospital Campus, where she is the clinic chief. She is also a clinical associate professor at UW. Dr. Horan received her B.A. in chemistry at St. Michael's College in Colchester, VT, and M.S. in organic chemistry at the University of Colorado/Boulder. She obtained her medical degree at the University of Vermont in 1984. Post graduate training in internal medicine, pulmonary and critical care medicine was completed at Madigan Army Medical Center in Tacoma, WA. Dr. Horan served at total of 11 years in the US Army before practicing at Valley Medical Center for 3 years. She has been a hospitalist and pulmonary/critical care provider at Northwest Hospital since 1998, now as a part time clinician. Dr. Horan's interests in information technology has led to her assuming leadership roles in informatics since 2010, and currently serves as the Chief Medical Information Officer and Sr. Director for Clinical Informatics. She is also the interim Health Information Management Sr. Director as well. She is a fellow the American College of Physicians and the American College of Chest Physicians. She is board certified in internal medicine, pulmonary medicine and critical care medicine from the American Board of Internal Medicine. Most recently, she became a diplomat in clinical informatics in 2015 from the American Board of Preventative Medicine.

Patient Care Philosophy

Dr. Horan is very interested in helping people with chronic diseases live quality lives. She has also been involved with the application of new technologies to advance the practice of medicine in the hospital setting.

Clinical Interests

Adult respiratory diseases and critical care medicine.


Institution Credential Year
University of Colorado Master 1980
Univ. of Vermont Medical education 1984
Madigan Army Medical Center Internship
Madigan Army Medical Center Residency
Madigan Army Medical Center Fellowship
Degree Institution Year
MD University of Vermont, College of Medicine 1984

Board Certifications

Certification Specialty Year
American Board of Preventive Medicine Clinical Informatics 2015
American Board of Internal Medicine Critical Care Med. (Int Med) 1991
American Board of Internal Medicine Internal Medicine 1987
American Board of Internal Medicine Pulmonary Disease 1990