Marvin Den

Marvin Den, MD

Allergy and Immunology, Internal Medicine
4.6 rating based on 99 ratings
(4.6/5 stars) 99 Reviews | 13 Comments
  • Norwalk
    40 Cross Street, Norwalk, CT 06851
  • (203) 845-4800
  • 203-845-4873
  • German

About the Provider

Dr. Den is board certified in allergy and immunology and internal medicine.  He was awarded his medical degree from the New York University School of Medicine, followed by his internship and residency at St. Luke’s-Roosevelt Hospital Center, New York, NY.  He then completed a fellowship in allergy, clinical immunology, infectious diseases and epidemiology at St. Luke’s-Roosevelt Hospital Center.

Previously, he was president of Norwalk Medical Group and has also been in private practice with the Group. He is assistant chair of the Department of Medicine at Norwalk Hospital and co-chair of pharmacy and therapeutics.  He is also an assistant clinical professor of medicine at Quinnipiac University, Frank H. Netter MD School of Medicine.

Dr. Den is a Fellow, American College of Allergy, Asthma and Immunology as well as a Fellow, American College of Chest Physicians. He is a member of the Alpha Omega Alpha Honor Medical Society.  He has been on the “American Top Physicians’ list of the Consumers’ Research Council of America from 2004-2014.

He is fluent in German and Yiddish as well as English.

Medical School
New York University School of Medicine
Degree: Doctor of Medicine
Mount Sinai West - Formerly Roosevelt Hospital
Mount Sinai West - Formerly Roosevelt Hospital
St Lukes-Roosevelt Hospital Center Program
Board Certification
Allergy and Immunology
Internal Medicine
Hospital Affiliation
Norwalk Hospital

Office Location (1)

  • Norwalk
    40 Cross Street
    Norwalk, CT 06851
    Ph: (203) 845-4800
    Fax: 203-845-4873


As I put before, I have seen Dr. Den for years as has my entire family and parts of my extended family. I even moved away to another state and still returned to his office. He has always had my best interests in mind, is always honest and is always willing to listen to any and all of my health concerns.
February 26, 2018
I recommend Dr. Den to my friends
February 15, 2018
Dr. Den has been my personal physician for almost 40 years. I would never go to anyone else - - unless he retired - - and then I would ask him for a recommendation.
January 9, 2018
Dr. Den is one of the best diagnosticians and health care providers that I have ever encountered.
November 9, 2017
I have been seeing Dr Den for more than 30 years and that shows how pleased I am with the service
October 27, 2017
Dr. Den has been my doctor for some time and is caring and listens to and answers my questions
October 26, 2017
This was my first visit with Dr. Den. Made me feel very comfotable
October 26, 2017
October 14, 2017
Dr Den is the best! Knowledgeable, Personable, Down to earth.
October 5, 2017
I see *Dr. Den every month for allergy shots as well as annual physicals, etc. He has ALWAYS been very professional physicals, etc. He has ALWAYS been very professional and gives me excellent care.
October 2, 2017
September 30, 2017
I definitely would recommend Dr. Den
September 11, 2017
Dr. Marvin Den has been my personal physician for almost 40 years and I would not use anyone else. He is knowledgeable, conscientious, understanding , very professional and respectfully concerned for me as his patient - - and he also has a great sense of humor.
September 10, 2017