Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Adina L Ornstein, MS, PA-C

Physician Assistant in New York, NY · enumerated 2007.

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

National Provider Identifier

1356539662

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Registry record

Entity type Individual (Type 1)

Name Ms. Adina L Ornstein

Credential MS, PA-C

Sex Female

Practice address 100 E 77th St, New York, NY, 10075

Phone (212) 434-2000

Enumeration date Oct 11, 2007

Last updated in NPPES May 11, 2011

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 011893 (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

What specialty is Adina Ornstein?

Adina Ornstein 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 2011-05-11.