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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mary Candida Tsidemidis I

General Practice Registered Nurse in Saint James, NY · enumerated 2024.

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

National Provider Identifier

1619747813

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Registry record

Entity type Individual (Type 1)
Name Mary Candida Tsidemidis I
Sex Female
Practice address Saint James, NY, 11780
Phone (631) 487-1627
Enumeration date Jan 8, 2024
Last updated in NPPES Jan 8, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 336883-01 (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.

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Frequently asked questions

Where does Mary Tsidemidis practice?
The practice location on file with NPPES is in Saint James, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Tsidemidis?
The National Provider Identifier (NPI) for Mary Tsidemidis is 1619747813, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-08.