Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Hanneke Jamieson Holderbach, COTA/L

Occupational Therapy Assistant in Portland, OR · enumerated 2006 · practices at West Hills Convalescent Center Limited Partnership.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1144399015

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Registry record

Entity type Individual (Type 1)

Name Mrs. Hanneke Jamieson Holderbach

Credential COTA/L

Sex Female

Practice address 5701 Sw Multnomah Blvd, Portland, OR, 97219

Phone (503) 244-1107

Enumeration date Nov 7, 2006

Last updated in NPPES Mar 3, 2017

Taxonomy & licenses

224Z00000X Occupational Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 0730113076 (VT) Primary

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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Frequently asked questions

Where does Hanneke Holderbach practice?

The practice location on file with NPPES is in Portland, OR. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Hanneke Holderbach?

The National Provider Identifier (NPI) for Hanneke Holderbach is 1144399015, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-03.