Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sydney Stone, LMSW

Social Worker in Hunt Valley, MD · enumerated 2022.

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

National Provider Identifier

1043946221

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Registry record

Entity type Individual (Type 1)

Name Sydney Stone

Credential LMSW

Sex Female

Practice address 11350 Mccormick Rd Ste 800, Hunt Valley, MD, 21031

Phone (410) 800-2169

Enumeration date Jul 28, 2022

Last updated in NPPES Jul 28, 2022

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 28947 (MD) 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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Sydney Stone?

Sydney Stone is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-28.