Dr. Margaret Co, MD

Fantastic allergist. Does exactly what an allergist should so. Listens carefully and then does the diagnostic work. Tested me thoroughly in office right away. In 20 minutes, she found out I was allergic to something that I would never have expected. But we all change as we get older. Prescribed a simple low-cost nasal spray that does the job perfectly. Dr. Co says there are only a few months of the year when the spray is necessary. A great visit, a great result!

Dr. Co is thorough in her explanations and listens carefully to her patients. At least, this is what I have experienced. I've been with her for about 7 yrs to treat all my allergy issues; asthma, eczema and seasonal allergies. Always on time, no wait and very pleasant. Wish she were my physician for everything!

Dr. Co is very throughout and informative. She takes her time to listen to your every concern. I highly recommend her to anyone needing a good allergist.

Dr. Co is an outstanding diagnostician. She listened intently, was kind and thoughtful and provided excellent feedback. I would definitely recommend and see her again

Dr. Co is one of the most thorough Allergist and immunologist I’ve ever been to. She also spends a good amount of time with her patients.

I have been suffering from a facial fungus for the past five years and every dermatologist I visited simply looked through a database and offered a cream or ointment. Nothing worked until I met Dr. Co. Her approach was different - scientific by elimination. First, she checked for possible allergies over a period of a couple days and after eliminating any possible reaction from a litany of body lotions and shampoos, she finally nailed the root cause. Sorry I just forgot the medical terminology she used from Mayo clinic. The ointment she prescribed worked like magic. The facial fungus disappeared within a couple of days and my skin recovered. thank you Dr. Co.

Dr.Co is very bright. She really listens to your issues and does everything to resolve them. She is kind, patient and has gone above and beyond to see me ASAP either in person or via telemed when I really need her. I have and would continue to recommend her to my friends & family.

Dr Co was very professional and tested for allergies. Found that I had none. She ten tested for Streep throat also negative. She suggested I test for Covid which I did and this also was negative. She suggested I take Musinex DM 12 hr for viral infection. I am better

Dr. Co is knowledgeable and personable. She explains everything but also listens. The staff in the Emerson office (especially Clara) are very friendly too! I definitely recommend her.

Dr Co was very informative and asks the pertinent questions to diagnose current conditions.

I went to see Dr Co to get allergy tested and it was determined that I have no allergies just a very sensitive nasal lining which makes my nose run constantly. I just needed a nasal spray which works great. She also suggested I get tested for a penicillin allergy that I've had all my life. It was such a relief to learn that I have no allergy to penicillin. Dr Co is so easy to talk to. She spent plenty of time with me explaining what the allergy tests would look like. I would definitely recommend her to my friends and family.

Initial consultation: Dr Co very methodical and thorough, spent necessary amount of time to understand current situation to determine future treatment. Also periodic reassessment of initial determination is part of her methodology. Very satisfied with her care and view.

I have had Dr. Co as my allergist for about over 6 years now. I can attest to her expertise and excellence knowledge in the field! Especially, when it came to my key allergies & eczema skin routine. Whenever something goes wrong with my allergies or skin, I go to her always! I trust knowing she will give very helpful suggestions, and will be absolutely thorough to get to the bottom of your problem. Recommend her!

Our appointment was kept on time. Her staff was proficient. My first visit to Dr. Margaret Co was very productive. I had suffered an asthma attack resulting in an ER visit a few days earlier. She heard all my symptoms, they were numerous. Prioritized and setup plan of attack. Prescribed the necessary meds to control my asthma to prevent another asthma attack episode. Since I felt my asthma attack was due to allergies. I never had asthma before. We setup a follow up to test for allergies.

I am Dr. Co's patient for over 30 years. She is very easy to talk to and is happy and willing to answer any questions She is friendly and caring to her patients. I would recommend her to anyone in need of a good allergist. Thank you Dr. Co.

She is the best

After 75 years I find out I’m not allergic to penicillin!! Thank you Dr Co!! The test was easy and definitely worth the one hour of my time.

I have known Dr. Co for over 30 years and her patient care has been consistent and patient centered. She is easy to talk to and is happy to answer any questions pertaining to my diagnosis. I would recommend her to anyone in need of a good allergist. Thank you for your commitment Dr. Co.

I’ve been going to Dr. Co for thirty years. She has always taken wonderful care of me. She always listens to my concerns and gives me advice and suggestions. I would highly recommend her to anyone looking for a compassionate, knowledgeable Allergist.

I have been seeing Dr. Co for allergy shots for over a year. She is very professional, helpful, and responsive to any issues I am having. I highly recommend her!