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Olivia Houlihan, LPC

Mental Health Counselor in Elmhurst, IL · enumerated 2021 · practices at Green Door Therapy LLC.

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

National Provider Identifier

1184380735

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Registry record

Entity type Individual (Type 1)
Name Olivia Houlihan
Credential LPC
Sex Female
Practice address 126 N York St Ste 2, Elmhurst, IL, 60126
Phone (630) 384-9560
Enumeration date Nov 9, 2021
Last updated in NPPES Nov 9, 2021

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 178017575 (IL) Primary
LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

Other identifiers

Identifier Type State Issuer
178017575 Other IL LPC

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 Olivia Houlihan practice?
The practice location on file with NPPES is in Elmhurst, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Olivia Houlihan?
The National Provider Identifier (NPI) for Olivia Houlihan is 1184380735, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-09.