Kaiser Foundation Hospitals
Kaiser Foundation Hospitals is a healthcare organization registered as End-Stage Renal Disease (ESRD) Treatment Clinic/Center in Hayward, CA, holding Type 2 (organization) NPI 1245305952 since 2006. The authorized official on file is Thomas Hanenburg, Svp/Area Manager.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1245305952 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Kaiser Foundation Hospitals |
| Other name | <Unavail> |
| Practice address | 27303 SLEEPY HOLLOW S, Hayward, CA, 94545 |
| Phone | 5107842079 |
| Enumeration date | 2006-11-21 |
| Last updated in NPPES | 2021-04-14 |
Authorized official
| Name | Thomas Hanenburg |
|---|---|
| Title | Svp/Area Manager |
| Phone | 5107844355 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 261QE0700X | End-Stage Renal Disease (ESRD) Treatment Clinic/Center | Primary | 140000053 | CA |
Copy-ready billing details
Provider: Kaiser Foundation Hospitals NPI: 1245305952 Taxonomy: 261QE0700X (End-Stage Renal Disease (ESRD) Treatment Clinic/Center) Address: 27303 SLEEPY HOLLOW S, Hayward, CA, 94545
Verify this record
Cross-check NPI 1245305952 against the authoritative CMS record: view Kaiser Foundation Hospitals on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-04-14.