Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ari Simon Natinsky
Psychologist in Chicago, IL · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578160776
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Registry record
Entity type Individual (Type 1)
Name Dr. Ari Simon Natinsky
Sex Male
Practice address 3410 W Roosevelt Rd, Chicago, IL, 60624
Phone (773) 840-8108
Fax (872) 702-3091
Enumeration date Oct 1, 2020
Last updated in NPPES Oct 1, 2020
Taxonomy & licenses
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.
Frequently asked questions
What specialty is Ari Natinsky?
Ari Natinsky is registered in NPPES with the primary taxonomy of Psychologist. 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 2020-10-01.