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

RACHAEL THALHEIMER MSW, LCSW
NPI 1407528334
Social Worker in Holliston, MA

Active since September 29, 2021
360 WOODLAND ST, HOLLISTON, MA 01746(508) 233-3324 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 14, 2026, Sep 29, 2021 (2 updates tracked since 2021).

About Rachael Thalheimer Msw, Lcsw NPPES

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

RACHAEL THALHEIMER MSW, LCSW (NPI 1407528334) is an individual social worker in Holliston, Massachusetts and active in the NPI registry since September 2021.

NPPES Registry Identity

NPI1407528334
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameRACHAEL THALHEIMERCredential: MSW, LCSW
Location Address360 WOODLAND STHolliston, MA 01746-1826
Mailing Address126 Marilyn StHolliston, MA 01746-2036 · (508) 233-3324
Phone(508) 233-3324
Sole ProprietorYes
Enumeration DateSeptember 29, 2021
Last NPPES UpdateJuly 14, 20262 updates tracked since enumeration
NPPES CertifiedJuly 14, 2026
✔ NPI 1407528334 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.
360 WOODLAND ST, Holliston, MA 01746
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care.Insurance ›

Other Providers at the Same Location NPPES 10

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

MR. STEVE W BISSON M.A.
Counselor (Mental Health)
360 WOODLAND ST
HOLLISTON, MA 01746
Middlesex County (508) 902-7845
MAEGAN ALEXA GARVEY VISCONTI LMHC, BC-DMT
Counselor (Mental Health)
360 WOODLAND ST
HOLLISTON, MA 01746
Middlesex County (860) 271-3139
DWINNELLS BEHAVIORAL HEALTH LLC
Counselor (Mental Health)
360 WOODLAND ST
HOLLISTON, MA 01746
Middlesex County (978) 254-4119
LYNN DECOURSEY ROTHBERG LIC. AC.
Acupuncturist
360 WOODLAND ST
HOLLISTON, MA 01746
Middlesex County (508) 429-3906
THROUGH THE VALLEY COUNSELING
Social Worker (Clinical)
360 WOODLAND ST
HOLLISTON, MA 01746
Middlesex County (508) 233-3324
LARISSA JAMES
Counselor
360 WOODLAND ST
HOLLISTON, MA 01746
Middlesex County (508) 902-7845
A NEW LEAF COUNSELING, LLC
Counselor (Mental Health)
360 WOODLAND ST
HOLLISTON, MA 01746
Middlesex County (508) 474-5475
COURTNEY ROMANOWSKI LMHC
Counselor (Mental Health)
360 WOODLAND ST
HOLLISTON, MA 01746
Middlesex County (774) 249-1704

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 Rachael Thalheimer's NPI number?

The NPI number for Rachael Thalheimer is 1407528334. It was assigned to this individual provider in the NPPES registry on September 29, 2021.

Where is Rachael Thalheimer located?

Rachael Thalheimer practices at 360 Woodland St, Holliston, MA 01746. The listed phone number is (508) 233-3324.

What is Rachael Thalheimer's specialty?

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

What insurance does Rachael Thalheimer accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Rachael Thalheimer 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 Rachael Thalheimer was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 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.