Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

GUSSY ELVIK, PLLC
NPI 1639084981
Counselor - Mental Health in Norman, OK

Q: What is Gussy Elvik, PLLC's NPI number?

The NPI number for Gussy Elvik, PLLC is 1639084981. It was assigned to this organization in the NPPES registry on August 18, 2026. The provider is doing business as Once Upon a Therapy.

Q: What is Gussy Elvik, PLLC's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Q: When was this NPI record last updated?

The NPPES record for Gussy Elvik, PLLC was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 18, 2026

102 W EUFAULA ST STE 213, NORMAN, OK 73069(405) 996-8588 Get Directions Write a Review

NPPES record added: September 17, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 17, 2026, Aug 18, 2026 (2 updates tracked since 2026).

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About Gussy Elvik, Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GUSSY ELVIK, PLLC (NPI 1639084981), doing business as Once Upon A Therapy, is a healthcare organization registered as a mental health in Norman, Oklahoma and active in the NPI registry since August 2026. The organization lists Augusta Anne Elvik, Lpc-s,rpt, as its authorized official.

NPPES Registry Identity

NPI1639084981

Entity TypeOrganization

Primary Taxonomy101YM0800X

Legal Business NameGUSSY ELVIK, PLLC

Location Address102 W EUFAULA ST STE 213Norman, OK 73069-5656

Mailing Address102 W Eufaula St Ste 213Norman, OK 73069-5656 · (405) 996-8588

Phone(405) 996-8588

Organization SubpartNo

Authorized OfficialAugusta Anne ElvikLpc-s,rpt · (405) 996-8588

Enumeration DateAugust 18, 2026

Last NPPES UpdateSeptember 17, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 17, 2026

✔ NPI 1639084981 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

102 W EUFAULA ST STE 213, Norman, OK 73069

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Other Names 1

Doing Business AsOnce Upon A Therapy

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gussy Elvik, PLLC's NPI number?

The NPI number for Gussy Elvik, PLLC is 1639084981. It was assigned to this organization in the NPPES registry on August 18, 2026. The provider is doing business as Once Upon a Therapy.

Where is Gussy Elvik, PLLC located?

Gussy Elvik, PLLC is located at 102 W Eufaula St Ste 213, Norman, OK 73069. The listed phone number is (405) 996-8588.

What is Gussy Elvik, PLLC's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Gussy Elvik, PLLC was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.