Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Eric B Nicholson, MD, PHD

Psychiatry Physician in Norwalk, CT · enumerated 2013.

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

National Provider Identifier

1356779748

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Registry record

Entity type Individual (Type 1)

Name Dr. Eric B Nicholson

Credential MD, PHD

Sex Male

Practice address Norwalk, CT, 06850

Phone (203) 838-8168

Enumeration date Oct 22, 2013

Last updated in NPPES Oct 22, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 037825 (CT) Primary

2084P0802X Addiction Psychiatry Physician Allopathic & Osteopathic Physicians · License 037825 (CT) Secondary

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

How do I verify Eric Nicholson's NPI record?

Cross-check NPI 1356779748 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1356779748 active?

Yes, as of the latest NPPES snapshot, NPI 1356779748 is active (record last updated 2013-10-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-10-22.