Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Iwona Roztoczynska, PA

Physician Assistant in Flushing, NY · enumerated 2006.

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

National Provider Identifier

1861419590

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Registry record

Entity type Individual (Type 1)

Name Iwona Roztoczynska

Credential PA

Sex Female

Practice address 56-45 Main St, New York Hospital Medical Center of Queen Emergency Dep, Flushing, NY, 11355

Phone (718) 670-1231

Fax (610) 617-6280

Enumeration date Jul 17, 2006

Last updated in NPPES Feb 8, 2010

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 008001 (NY) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA credential

Other identifiers

Identifier	Type	State	Issuer
G400000716	Other	NY	MEDICARE NUMBER

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Iwona Roztoczynska?

Iwona Roztoczynska is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-08.