Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maria Istafanos, DO

Anesthesiology Physician in Oceanside, NY · enumerated 2021.

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

National Provider Identifier

1588245252

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Registry record

Entity type Individual (Type 1)

Name Maria Istafanos

Credential DO

Sex Female

Practice address 1 Healthy Way, Oceanside, NY, 11572

Phone (516) 623-2000

Enumeration date Apr 15, 2021

Last updated in NPPES Mar 18, 2026

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 25MB12983200 (NJ) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

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

What is the NPI number for Maria Istafanos?

The National Provider Identifier (NPI) for Maria Istafanos is 1588245252, a Type 1 (individual) record in the CMS NPPES registry.

Where does Maria Istafanos practice?

The practice location on file with NPPES is in Oceanside, NY. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-18.