Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Robert S Nissan, M.D.
Family Medicine Physician in Northport, NY · enumerated 2005 · practices at Northport Family Medicine P.C.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669479010
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00590001 | Medicaid | NY | - |
| 24A921 | Other | NY | MEDICARE LEGACY |
| 1C2496 | Other | - | HEALTHNET |
| 0520035 | Other | - | AETNA |
| 442081060 | Other | NY | MEDICARE RAILROAD PTAN |
| CP521 | Other | - | OXFORD |
| 0065892 | Other | - | GHI |
| 24A921 | Other | NY | BLUE CROSS BLUE SHIELD |
| 10263 | Other | - | VYTRA |
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
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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-24.