Dr. Co is a graduate of the University of the Philippines College of Medicine. She completed her Residency at Long Island Jewish Medical Center and her Fellowship in Allergy and Immunology at New York Presbyterian Hospital – Cornell Campus. Prior to joining Bergen Medical Associates, she was in private practice in Ridgewood, NJ for over 20 years. Dr. Co is Board Certified in Allergy and Immunology and sees both adults and children. She believes in the importance of patient education and partnership in managing their conditions. Her special interests include food allergy, asthma, allergic skin disorders and immune therapies. Dr. Co is a Castle Connolly Top Doctor in her field.
Margaret Co, M.D.
Reviews
“I saw Dr. Co today for an allergic reaction visit. She spent almost an hour doing detective work try to pinpoint what I came into contact with from personal hygiene products to cosmetics and shampoo/conditioner hair products. I will be seeing her for allergy testing later this month but I have to say that she was quite thorough with the interview along with the exam. I cannot say enough about her and her staff. I would like to give my thanks to Melissa at the Front Desk for being so kind with scheduling me for follow up visits and also to Diana the Medical Assistant who reviewed my health history, medications very thoroughly and taking my vital signs. Every person I encountered was very professional and their demeanor warm & comforting. Thank you!!!”
11/2025
“I’ve had such a great experience at Dr. Co’s practice at Bergen Medical Associates. The professionalism and patience of the team are impressive and appreciated. The time that Dr. Co spent with me to read over my medical history and ask questions to truly understand my symptoms was unlike any other Dr. I’ve seen. This has continued over several visits and tests prior to coming up with a solution and a plan.In today’s world of rushed medical care, I highly recommend you contact Dr. Co’s practice for a much better patient experience.”
5/2025
“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!”
– S.S., 8/2024
“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.”
11/26/23
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