Marvin Den, MD

Addiction Medicine · Internal Medicine · Allergy & Immunology

21+ years in practiceNPI: 1659363356Licensed in CT

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Credentials & Recognition

Specialties

Addiction MedicineInternal MedicineAllergy & Immunology

NPI sub-specialties

Allergy & Immunology207K00000X

Internal Medicine207R00000X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Google Reviews

4.0 / 5.0

1 review

Years in Practice

21+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#10

Top Allergists & Immunologists in Connecticut, 2026

Allergy & Immunology · Connecticut · 2026

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Frequently Asked Questions about Dr. Marvin Den, MD

Where does Dr. Marvin Den, MD practice?+
Dr. Marvin Den, MD practices in New York, NY. 40 CROSS ST 4TH FL NORWALK, CT 068514647.
What is Dr. Marvin Den, MD's phone number?+
Dr. Marvin Den, MD's practice phone is 203-845-4800. Office contact information is verified on the PBCMMG profile.
What does Dr. Marvin Den, MD specialize in?+
Dr. Marvin Den, MD's primary specialty is Addiction Medicine, with additional focus on Internal Medicine, Allergy & Immunology.
Is Dr. Marvin Den, MD board certified?+
Board certification status for Dr. Marvin Den, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Marvin Den, MD been practicing?+
Dr. Marvin Den, MD has been in active practice for 21+ years, based on NPI enumeration and state licensing records.
What is Dr. Marvin Den, MD's NPI number?+
Dr. Marvin Den, MD's National Provider Identifier (NPI) is 1659363356, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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