NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey Marcus Cohen, M.D.

Dermatology Physician in New Haven, CT · enumerated 2015.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1689054397

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Registry record

Entity type Individual (Type 1)
Name Jeffrey Marcus Cohen
Credential M.D.
Sex Male
Practice address 2 Church St S Ste 305, New Haven, CT, 06519
Phone (203) 789-1249
Enumeration date Jun 8, 2015
Last updated in NPPES Aug 12, 2019

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 264183 (MA) Secondary
207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 63676 (CT) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is NPI 1689054397 active?
Yes, as of the latest NPPES snapshot, NPI 1689054397 is active (record last updated 2019-08-12).
How do I verify Jeffrey Cohen's NPI record?
Cross-check NPI 1689054397 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-12.