Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CALLEN GROFF
NPI 1992518351
Counselor - Mental Health in Seattle, WA

Q: What is Callen Groff's NPI number?

The NPI number for Callen Groff is 1992518351. It was assigned to this individual provider in the NPPES registry on January 29, 2025.

Q: What is Callen Groff'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 Callen Groff was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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 January 29, 2025

4501 15TH AVE S, SEATTLE, WA 98108(509) 386-2403 Get Directions Write a Review

NPPES record last updated: August 12, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

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About Callen Groff NPPES

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

CALLEN GROFF (NPI 1992518351) is an individual mental health provider in Seattle, Washington and active in the NPI registry since January 2025.

NPPES Registry Identity

NPI1992518351

Entity TypeIndividualFemale

Primary Taxonomy101YM0800X

Provider Legal NameCALLEN GROFF

Location Address4501 15TH AVE SSeattle, WA 98108-1873

Mailing Address4501 15th Ave S Ste 102Seattle, WA 98108-1874 · (509) 386-2403

Phone(509) 386-2403

Sole ProprietorNo

Enumeration DateJanuary 29, 2025

Last NPPES UpdateAugust 12, 2026

NPPES CertifiedAugust 12, 2026

✔ NPI 1992518351 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

4501 15TH AVE S, Seattle, WA 98108

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Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MISS ALISHA BACHMAN LMFT

Marriage & Family Therapist

4501 15TH AVE S
SEATTLE, WA 98108

King County (253) 254-5227

JC MAYBERRY-ABE LMHC

Counselor (Mental Health)

4501 15TH AVE S, SUITE 103
SEATTLE, WA 98108

King County (206) 790-7366

MEGAN CHRISTINE SLADE LMHC

Counselor (Mental Health)

4501 15TH AVE S, SUITE 103
SEATTLE, WA 98108

King County (406) 425-1198

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 Callen Groff's NPI number?

The NPI number for Callen Groff is 1992518351. It was assigned to this individual provider in the NPPES registry on January 29, 2025.

Where is Callen Groff located?

Callen Groff practices at 4501 15th Ave S, Seattle, WA 98108. The listed phone number is (509) 386-2403.

What is Callen Groff'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 Callen Groff was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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.