About Us

About Dr. Doug McMahon Allergy and Astma Specialist

Dr. McMahon grew up in Little Canada, MN with asthma, environmental allergies as well as tree nut allergies. Based on his own symptoms he decided at a young age to pursue a career in Medicine. He went to St. Thomas Academy and then onto Boston College earning a degree in Biology. He then went to Georgetown University where he earned a Master’s Degree in Physiology and Biophysics as well as his Medical Degree while graduating the Senior Class President. He then completed his residency in Pediatrics at the University of South Florida, one of the top programs in the country for pediatric allergic and immunological disorders. He finished his formal education at the University of Wisconsin, Madison in Pediatric and Adult Allergy and Asthma, the top program in the country for Asthma research. 


Dr. McMahon is a Board certified allergy and asthma doctor and is a frequent lecturer at national medical meetings for food allergies and asthma. He's  proud to have served as the director of Outpatient Allergy at the University of Minnesota for 4 years and the president of the Minnesota Allergy Society. He is also the only Allergy trained member of the Twin Cities Children’s Asthma Committee. He is a member of the Food Allergy and Anaphylaxis Network, Anaphylaxis and Food Allergy Association of Minnesota, Minnesota Medical Society, and the American Academy of Allergy, Asthma and Immunology. Given his firsthand experience Dr. McMahon knows what his patients are experiencing, and is excited to be able to relate to his patients while providing the best care. It is his goal to have each of his patients live a ‘normal’ life by working together with an emphasis of treating the person rather than the disorder they may have.


Dr. McMahon is very involved in the community currently volunteering with Big Brothers and Big Sisters of America as well as The Phillips Neighborhood free clinic. He has participated in multiple medical mission trips including South America, Africa and the Philippines.


Dr.McMahon has been named a Top Doctor by his peers in MN and in America for the past 7 years.


Sofia Vasilyeva, PA-C 

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Sofia grew up in the Twin Cities and always knew that she wanted to become a provider that delivers compassionate, patient centered, and culturally competent care to both patients and their families. Her interest in allergies and asthma was sparked at a young age when she saw the life changing effects of excellent treatment for these conditions among her close family members and friends. To be able to do this herself, she obtained her Bachelor of Arts degree in biology from the University of Minnesota Twin Cities and then attended Northwestern College in Iowa for her Master of Science degree in Physician Assistant Studies.


Sofia is a member of the Minnesota and American Academy of Physician assistants and is board certified by the National Commission on the Certification of Physician Assistants. She is extremely driven and dedicated to providing the best quality care to patients of all ages and caring for all members of a family in the long term. Sofia is very excited to be a provider at the Allergy and Asthma Center of Minnesota family and is grateful for the opportunity to be a part in helping to make these life changing measures for patients and their families.



Alexa Stilp, PA-C 

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Alexa grew up in the Northeast Metro and as an outdoor enthusiast, she enjoys everything the state of Minnesota has to offer. She has been immersed in healthcare, as an allergy and asthma patient, since she was born. Her experiences have driven her desire to pursue a career as a Physician Assistant and care for patients of all ages. She obtained her Bachelor of Science degree in Biomedical Sciences from the University of Wisconsin - La Crosse. She then attended Saint Catherine University in St. Paul where she earned her Master’s in Physician Assistant Studies. 


Alexa is board certified by the National Commission on the Certification of Physician Assistants. She is also a member of both the Minnesota and American Academy of Physician Assistants. Alexa finds great joy in being able to establish lasting relationships with her patients and deliver thoughtful, expert care. She is delighted to be part of the Allergy and Asthma Center of Minnesota team.  She looks forward to helping every patient enjoy and engage in the activities they so desire here in the wonderful Midwest and beyond. 



Chris Monk, CNP 

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Chris grew up in Central Nebraska where he developed a love for healthcare and helping others. He started his career by obtaining a Bachelors of Science from the University of Nebraska at Omaha. Next, Chris obtained his Bachelor's degree in Science of nursing at Clarkson College he pursued a career in the public health sector to help those in need. Chris continued his education during this time pursuing his Masters in Nursing through the University of Nebraska Medical Center to become a Primary care Nurse Practitioner. In his spare time Chris enjoys going for hikes and camping with his dogs and family.  


Chris is board certified by the  American Association of Nurse Practitioners. Chris strives to provide the most current evidenced based medical care available. Chris enjoys working with patients of all ages and is excited to be contributing to the health needs of the Duluth community. 



Dr. McMahon In The News:

Dr. Doug McMahon peanut desensitization program in Minnesota
Dr. Doug McMahon from Allergy and Asthma Center of Minnesota discusses peanut allergies on twin cities live
Dr. Doug McMahon from Allergy & Asthma Center of Minnesota discusses Halloween and Food Allergies on KARE 11

Dr. Douglas McMahon