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MS. MALLORY ANNE GRIMSTE LCSW
NPI 1841591609
Social Worker in Branford, CT

Active since November 10, 2010Opted out of Medicare · through Dec 7, 2027
250 W MAIN ST STE 203, BRANFORD, CT 06405(203) 228-8971(203) 429-8628 Get Directions Write a Review

NPPES record last updated: October 6, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Oct 6, 2025, Sep 18, 2025 (2 updates tracked since 2025).

About Ms. Mallory Anne Grimste Lcsw NPPES

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

MS. MALLORY ANNE GRIMSTE LCSW (NPI 1841591609) is an individual social worker in Branford, Connecticut and active in the NPI registry since November 2010. She has opted out of Medicare through December 7, 2027.

NPPES Registry Identity

NPI1841591609
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameMS. MALLORY ANNE GRIMSTECredential: LCSW
Location Address250 W MAIN ST STE 203Branford, CT 06405-4032
Mailing Address250 W Main St Ste 203Branford, CT 06405-4032 · (203) 228-8971 · Fax (203) 429-8628
Phone(203) 228-8971
Fax(203) 429-8628
Sole ProprietorNo
Enumeration DateNovember 10, 2010
Last NPPES UpdateOctober 6, 20252 updates tracked since enumeration
NPPES CertifiedOctober 6, 2025
✔ NPI 1841591609 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
250 W MAIN ST STE 203, Branford, CT 06405
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Ms. Mallory Anne Grimste Lcsw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from December 7, 2023 through December 7, 2027.

Opt-Out Effective DateDecember 7, 2023
Opt-Out In Effect ThroughDecember 7, 2027Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES

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

MALLORY GRIMSTE LLC
Social Worker (Clinical)
250 W MAIN ST STE 203
BRANFORD, CT 06405
South Central Connecticut Planning Region (203) 228-8971

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 Mallory Grimste's NPI number?

The NPI number for Mallory Grimste is 1841591609. It was assigned to this individual provider in the NPPES registry on November 10, 2010.

Where is Mallory Grimste located?

Mallory Grimste practices at 250 W Main St Ste 203, Branford, CT 06405. The listed phone number is (203) 228-8971.

What is Mallory Grimste's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Mallory Grimste enrolled in Medicare?

No. Mallory Grimste has opted out of Medicare through December 7, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Mallory Grimste was last updated on October 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.