Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Katharine X Martin, MSW
Social Worker in Oneonta, NY · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1912889569
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Registry record
Entity type Individual (Type 1)
Name Ms. Katharine X Martin
Credential MSW
Sex Female
Practice address 282 Main St., Martink@Otsegocountyny.Gov, Oneonta, NY, 13820
Phone (607) 376-5525
Fax (607) 376-5525
Enumeration date Jul 24, 2025
Last updated in NPPES Sep 11, 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 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 Katharine Martin?
Katharine Martin 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.