Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Linda Cari Estergard, LCSW, PHD, PC

Psychologist in Lake Oswego, OR · enumerated 2007 · practices at Linda C Estergard, Phd, Lcsw, PC.

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

National Provider Identifier

1134342587

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Registry record

Entity type Individual (Type 1)

Name Ms. Linda Cari Estergard

Credential LCSW, PHD, PC

Sex Female

Practice address Lake Oswego, OR, 97035

Phone (503) 675-2830

Fax (503) 675-2852

Enumeration date Apr 11, 2007

Last updated in NPPES Jul 5, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 2106 (OR) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
R161082	Other	OR	MEDICARE PTAN-INDIVIDUAL
R138282	Other	OR	MEDICARE PTAN-GROUP

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Linda Estergard?

Linda Estergard is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-05.