Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Greyson Holliday

Psychologist in Champaign, IL · enumerated 2025 · practices at Graceway Psychology Group, LLC.

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

National Provider Identifier

1689559213

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Registry record

Entity type Individual (Type 1)

Name Dr. Greyson Holliday

Sex Male

Practice address 201 W Springfield Ave Ste 211, Champaign, IL, 61820

Phone (217) 621-6180

Enumeration date Aug 11, 2025

Last updated in NPPES Aug 11, 2025

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 071.022314 (IL) 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 Greyson Holliday practice?

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

What is the NPI number for Greyson Holliday?

The National Provider Identifier (NPI) for Greyson Holliday is 1689559213, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Teresa Davenport Psychologist · Champaign, IL NPI 1851663256 Weimin Blocher Counseling Psychologist · Champaign, IL NPI 1235577990 Graceway Psychology Group, LLC Clinical Psychologist · Champaign, IL NPI 1275900896 Michelle Lemay Clinical Psychologist · Champaign, IL NPI 1437091782

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-11.