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

Daniel Joseph Mckiernan, R.N.

Registered Nurse in Middle Island, NY · enumerated 2011.

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

National Provider Identifier

1740561810

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Registry record

Entity type Individual (Type 1)

Name Daniel Joseph Mckiernan

Credential R.N.

Sex Male

Practice address Middle Island, NY, 11953

Phone (631) 356-6599

Enumeration date Sep 2, 2011

Last updated in NPPES Sep 2, 2011

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

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 646546 (NY) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Daniel Mckiernan?

The National Provider Identifier (NPI) for Daniel Mckiernan is 1740561810, a Type 1 (individual) record in the CMS NPPES registry.

Where does Daniel Mckiernan practice?

The practice location on file with NPPES is in Middle Island, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-02.