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GRETA KATHERINE HAMMER
NPI 1770138836
Counselor - Mental Health in Bellingham, WA

Active since August 06, 2019PECOS Enrolled
1328 PARKSTONE LN, BELLINGHAM, WA 98229(509) 361-4310 Get Directions Write a Review

NPPES record last updated: July 16, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 23, 2021, Aug 6, 2019 (2 updates tracked since 2019).

About Greta Katherine Hammer NPPES

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

GRETA KATHERINE HAMMER (NPI 1770138836) is an individual mental health provider in Bellingham, Washington and active in the NPI registry since August 2019. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1770138836
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameGRETA KATHERINE HAMMER
Location Address1328 PARKSTONE LNBellingham, WA 98229-2580
Mailing Address1328 Parkstone LnBellingham, WA 98229-2580
Phone(509) 361-4310
Sole ProprietorNo
Enumeration DateAugust 6, 2019
Last NPPES UpdateJuly 16, 20252 updates tracked since enumeration
NPPES CertifiedJuly 16, 2025
✔ NPI 1770138836 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1328 PARKSTONE LN, Bellingham, WA 98229
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Secondary Practice Locations 2

Location 13645 E McLeod RdBellingham, WA 98226-8700 · Phone (360) 676-2220
Location 23600 Meridian StBellingham, WA 98225-1756 · Phone (360) 676-6000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Greta Katherine Hammer is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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 Greta Hammer's NPI number?

The NPI number for Greta Hammer is 1770138836. It was assigned to this individual provider in the NPPES registry on August 6, 2019.

Where is Greta Hammer located?

Greta Hammer practices at 1328 Parkstone Ln, Bellingham, WA 98229. The listed phone number is (509) 361-4310.

What is Greta Hammer's specialty?

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

Is Greta Hammer enrolled in Medicare?

Yes. Greta Hammer is registered in the Medicare PECOS enrollment system.

What insurance does Greta Hammer accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Greta Hammer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Greta Hammer was last updated on July 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.