Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor
Dr. Joseph John Williams, MD
Orthopaedic Surgery Physician in Saint Louis, MO · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841298478
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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 |
|---|---|---|---|
| 009235 | Other | MO | SSM EXCLUSIVE CHOICE |
| 0900042 | Other | MO | UNITED HEALTH CARE |
| 2273874 | Other | MO | AETNA |
| 7924 | Other | MO | GROUP HEALTH PLAN |
| 200008457 | Other | - | RR MEDICARE |
| 101381 | Other | MO | HEALTHLINK |
| 200883205 | Medicaid | MO | - |
| 22312 | Other | MO | BLUE CROSS BLUE SHIELD |
| P-65360611 | Other | - | MULTIPLAN |
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 2011-11-01.