Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Monika E Herrick Ostroff, L.I.C.S.W.

Clinical Social Worker in Newton, MA · enumerated 2006 · practices at Multi-Service Eating Disorders Association Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1639105885

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Registry record

Entity type Individual (Type 1)

Name Monika E Herrick Ostroff

Credential L.I.C.S.W.

Sex Female

Practice address 1320 Centre St Ste 101, Newton, MA, 02459

Phone (617) 558-1881

Fax (603) 217-5910

Enumeration date Jun 22, 2006

Last updated in NPPES Feb 23, 2023

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 1096 (NH) Primary

Other identifiers

Identifier	Type	State	Issuer
30422923	Medicaid	NH	-
14Y001391NH01	Other	NH	ANTHEM OF NH
S400644996	Other	MA	MEDICARE MA

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Monika Herrick Ostroff practice?

The practice location on file with NPPES is in Newton, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Monika Herrick Ostroff?

The National Provider Identifier (NPI) for Monika Herrick Ostroff is 1639105885, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Multi-Service Eating Disorders Association Inc Mental Health Clinic/Center (Including Community Mental Health Center) · Newton, MA NPI 1861038473 Alivia Carlton Clinical Social Worker · Newton Centre, MA NPI 1699509604

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-23.