NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Gillian Crowley Livesay, MHS, OTRL

Occupational Therapist in Fairfax, VA · enumerated 2007.

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

National Provider Identifier

1235258468

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mrs. Gillian Crowley Livesay
Credential MHS, OTRL
Sex Female
Practice address 8270 Willow Oaks Corporate Dr # 2120, Fairfax, VA, 22031
Phone (571) 423-4864
Enumeration date Mar 28, 2007
Last updated in NPPES Mar 20, 2018

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 056006827 (IL) Primary

Other identifiers

Identifier Type State Issuer
113326 Other - HEALTHLINK PROV ID
4117 Other IL HAMP PROVIDER ID
7216 Other - PERSONALCARE PROV ID
203 Other IL BLUE CROSS PROV ID

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 is the NPI number for Gillian Livesay?
The National Provider Identifier (NPI) for Gillian Livesay is 1235258468, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gillian Livesay practice?
The practice location on file with NPPES is in Fairfax, VA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-20.