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

Mrs. Andrea Amelia Llewellyn

Addiction (Substance Use Disorder) Counselor in White Plains, NY · enumerated 2017.

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

National Provider Identifier

1770006793

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Registry record

Entity type Individual (Type 1)

Name Mrs. Andrea Amelia Llewellyn

Sex Female

Practice address White Plains, NY, 10601

Phone (914) 946-2810

Enumeration date Jul 21, 2017

Last updated in NPPES Jun 16, 2018

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 12371 (NY) Primary

163W00000X Registered Nurse Nursing Service Providers · License 461772-1 (NY) Secondary

Other identifiers

Identifier	Type	State	Issuer
461772-1	Other	NY	LICENSE

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

Is NPI 1770006793 active?

Yes, as of the latest NPPES snapshot, NPI 1770006793 is active (record last updated 2018-06-16).

How do I verify Andrea Llewellyn's NPI record?

Cross-check NPI 1770006793 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-16.