Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sarah Niamh Mullin, LMSW
Social Worker in Massapequa, NY · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1154127835
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Registry record
Entity type Individual (Type 1)
Name Sarah Niamh Mullin
Credential LMSW
Sex Female
Practice address 100 Veterans Blvd, Massapequa, NY, 11758
Phone (516) 234-8098
Enumeration date Feb 22, 2025
Last updated in NPPES Feb 22, 2025
Taxonomy & licenses
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 1154127835 active?
Yes, as of the latest NPPES snapshot, NPI 1154127835 is active (record last updated 2025-02-22).
How do I verify Sarah Mullin's NPI record?
Cross-check NPI 1154127835 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-22.