Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jay David Marson, MSW
Social Worker in White Plains, NY · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1518174119
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Registry record
Entity type Individual (Type 1)
Name Jay David Marson
Credential MSW
Sex Male
Practice address 222 Westchester Avenue, Suite 406, White Plains, NY, 10604
Phone (914) 946-4666
Fax (914) 946-4003
Enumeration date May 16, 2007
Last updated in NPPES Jul 8, 2007
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 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 Jay Marson?
Jay Marson 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.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.