Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor
Dr. Lotfi Ben-Youssef, M.D.
Orthopaedic Surgery Physician in Sidney, MT · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609919364
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Registry record
Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0069628 | Medicaid | MT | - |
| 15041 | Medicaid | ND | - |
| 000017170 | Other | MT | BC BS MT |
| 0179554 | Medicaid | MT | - |
| 0000082342 | Other | MT | MEDICARE GROUP |
| 184683900 | Other | - | FEDERAL WC |
| 200001236 | Other | - | RR MEDICARE |
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 2010-02-18.