Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor
Mrs. Ruby K Osterloh, M.A., CCC-A
Audiologist in Billings, MT · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689722928
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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 |
|---|---|---|---|
| 3583732 | Medicaid | IA | - |
| 9583724 | Medicaid | IA | - |
| 1583724 | Medicaid | IA | - |
| 6583724 | Medicaid | IA | - |
| 4583724 | Medicaid | IA | - |
| 5583724 | Medicaid | IA | - |
| 1689722928 | Other | MT | INDIAN HEALTH SERVICE, CONTRACT AUDIOLOGIST |
| 2583724 | Medicaid | IA | - |
| 2583732 | Medicaid | IA | - |
| 36832 | Other | NE | BCBS ENT |
| 36835 | Other | NE | BCBS BT |
| 8583724 | Medicaid | IA | - |
| 0583724 | Medicaid | IA | - |
| 3583724 | Medicaid | IA | - |
| 0583732 | Medicaid | IA | - |
| 7583724 | Medicaid | IA | - |
| 1583732 | Medicaid | IA | - |
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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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-19.