Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Nicholas A. Oleen-Junk, Ph.D., Pllc

Psychologist in League City, TX · enumerated 2020 · authorized official Nicholas Oleen-Junk, Licensed Psychologist.

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

National Provider Identifier

1063019248

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Registry record

Entity type Organization (Type 2)

Legal business name Nicholas A. Oleen-Junk, Ph.D., Pllc

Practice address 216 N Michigan Ave, League City, TX, 77573

Phone (281) 332-5100

Fax (281) 332-5155

Enumeration date Oct 1, 2020

Last updated in NPPES Oct 1, 2020

Taxonomy & classification

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

Authorized official

Name Nicholas Oleen-Junk

Title Licensed Psychologist

Phone (281) 332-5100

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 → Validate an NPI →

Frequently asked questions

Where is Nicholas A. Oleen-Junk, Ph.D., Pllc located?

The practice location on file with NPPES is in League City, TX.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-10-01. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-01.