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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Peter M Castellano, DNP

Acute Care Nurse Practitioner in Manhasset, NY · enumerated 2026.

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

National Provider Identifier

1205753035

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Registry record

Entity type Individual (Type 1)
Name Mr. Peter M Castellano
Credential DNP
Sex Male
Practice address 300 Community Dr, Manhasset, NY, 11030
Phone (516) 562-0100
Enumeration date Jul 2, 2026
Last updated in NPPES Jul 2, 2026

Taxonomy & licenses

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 433664 (NY) Primary
DNP · Doctor of Nursing Practice: A clinical doctorate for advanced practice nurses. About the DNP 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

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 Peter Castellano?
Peter Castellano is registered in NPPES with the primary taxonomy of Acute Care Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-02.