Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Elizabeth Buck, LMSW
Social Worker in Irving, NY · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1558841205
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Registry record
Entity type Individual (Type 1)
Name Mary Elizabeth Buck
Credential LMSW
Sex Female
Practice address 36 Thomas Indian School Dr, Irving, NY, 14081
Phone (716) 532-5582
Fax (716) 242-6344
Enumeration date Aug 21, 2018
Last updated in NPPES Aug 21, 2018
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 089274-1 (NY) 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.
Frequently asked questions
Is NPI 1558841205 active?
Yes, as of the latest NPPES snapshot, NPI 1558841205 is active (record last updated 2018-08-21).
How do I verify Mary Buck's NPI record?
Cross-check NPI 1558841205 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-21.