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Trillium Inc

Obstetrics & Gynecology Physician in Westlake Village, CA · enumerated 2023 · authorized official Troy Williams, Medical Director.

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

National Provider Identifier

1053027516

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Registry record

Entity type Organization (Type 2)
Legal business name Trillium Inc
Practice address 1240 S Westlake Blvd Ste 137, Westlake Village, CA, 91361
Phone (818) 597-9320
Fax (818) 597-9328
Enumeration date Jan 27, 2023
Last updated in NPPES Jan 27, 2023

Taxonomy & classification

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Troy Williams
Title Medical Director
Phone (805) 217-4055

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 is the NPI number for Trillium Inc?
The NPI for Trillium Inc is 1053027516, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Trillium Inc?
NPPES lists Troy Williams (Medical Director) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-27.