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

Gregg Olson, LMFT, RN

Registered Nurse in Eugene, OR · enumerated 2006.

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

National Provider Identifier

1841398146

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Registry record

Entity type Individual (Type 1)

Name Gregg Olson

Credential LMFT, RN

Sex Male

Practice address Eugene, OR, 97401

Phone (541) 207-7136

Enumeration date Sep 20, 2006

Last updated in NPPES Feb 23, 2011

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

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC 34228 (CA) Secondary

163W00000X Registered Nurse Nursing Service Providers · License 200840395RN (OR) Primary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License TO556 (OR) Secondary

163W00000X Registered Nurse Nursing Service Providers · License 288983 (CA) Secondary

LMFT · Licensed Marriage and Family Therapist: A licensed therapist specializing in relational and family psychotherapy. About the LMFT credential

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

What specialty is Gregg Olson?

Gregg Olson is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Christine Jensen-Fox Family Medicine Physician · Eugene, OR NPI 1942287933 Anna Williams Child & Adolescent Psychiatry Physician · Eugene, OR NPI 1770553190 Michael Reaves Psychiatry Physician · Eugene, OR NPI 1265488324 Paul Helms Psychiatry Physician · Eugene, OR NPI 1205864436 Carmel Lakhani Psychiatry Physician · Eugene, OR NPI 1699790550 Paul Choi Psychiatry Physician · Eugene, OR NPI 1134235567 Wendy Saville Psychiatry Physician · Eugene, OR NPI 1386740389 Sarah Salisbury Marriage & Family Therapist · Eugene, OR NPI 1225138258

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-23.