Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Eryn Michelle Mcmaster, PHD

Psychologist in Edmond, OK · enumerated 2018.

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

National Provider Identifier

1588150536

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Registry record

Entity type Individual (Type 1)

Name Dr. Eryn Michelle Mcmaster

Credential PHD

Sex Female

Practice address 1900 E 15th St Ste 800b, Edmond, OK, 73013

Phone (405) 455-6868

Fax (405) 562-3444

Enumeration date Jul 2, 2018

Last updated in NPPES Aug 9, 2024

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 1103 (NE) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Eryn Mcmaster?

Eryn Mcmaster 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-09.