Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Chad O'Brien, LICSW

Clinical Social Worker in Dover, NH · enumerated 2012.

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

National Provider Identifier

1720344682

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Registry record

Entity type Individual (Type 1)

Name Mr. Chad O'Brien

Credential LICSW

Sex Male

Practice address 66 Old Rochester Rd Ste 308, Dover, NH, 03820

Phone (469) 734-7144

Enumeration date Apr 5, 2012

Last updated in NPPES May 23, 2019

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 2106 (NH) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Chad O'Brien's NPI record?

Cross-check NPI 1720344682 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1720344682 active?

Yes, as of the latest NPPES snapshot, NPI 1720344682 is active (record last updated 2019-05-23).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-23.