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

MS. ELAINE BLACK JOST LICSW
NPI 1831181296
Counselor - Mental Health in Watertown, MA

Q: What is Elaine Jost's NPI number?

The NPI number for Elaine Jost is 1831181296. It was assigned to this individual provider in the NPPES registry on August 21, 2005.

Q: What is Elaine Jost'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 Elaine Jost was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 44 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 21, 2005

14 APPLETON TER, WATERTOWN, MA 02472(617) 969-9877(617) 924-4647 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

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About Ms. Elaine Black Jost Licsw NPPES

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

MS. ELAINE BLACK JOST LICSW (NPI 1831181296) is an individual mental health provider in Watertown, Massachusetts, licensed in Massachusetts (105526) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1831181296

Entity TypeIndividualFemale

Primary Taxonomy101YM0800X

Provider Legal NameMS. ELAINE BLACK JOSTCredential: LICSW

Location Address14 APPLETON TERWatertown, MA 02472-3556

Mailing Address14 Appleton TerWatertown, MA 02472-3556 · (617) 969-9877 · Fax (617) 924-4647

Phone(617) 969-9877

Fax(617) 924-4647

Sole ProprietorNo

Enumeration DateAugust 21, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1831181296 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

License✔ Licensed in MA · 105526

14 APPLETON TER, Watertown, MA 02472

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Accepted Insurance

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

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 Elaine Jost's NPI number?

The NPI number for Elaine Jost is 1831181296. It was assigned to this individual provider in the NPPES registry on August 21, 2005.

Where is Elaine Jost located?

Elaine Jost practices at 14 Appleton Ter, Watertown, MA 02472. The listed phone number is (617) 969-9877.

What is Elaine Jost's specialty?

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

What insurance does Elaine Jost accept?

Health plans from Anthem Blue Cross and Blue Sheld and Anthem Blue Cross and Blue Shield list Elaine Jost 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 Elaine Jost was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 44 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.