Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katharine Glossner Iesiev, LICSW

Clinical Social Worker in Springfield, MA · enumerated 2018 · practices at Bio-Medical Applications of Massachusetts, Inc..

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

National Provider Identifier

1285100826

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Registry record

Entity type Individual (Type 1)

Name Katharine Glossner Iesiev

Credential LICSW

Sex Female

Practice address 2000 Main St, Springfield, MA, 01103

Phone (413) 739-5601

Fax (413) 746-5033

Enumeration date Oct 22, 2018

Last updated in NPPES Dec 3, 2020

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 121478 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
121478	Other	MA	LICSW

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

How do I verify Katharine Iesiev's NPI record?

Cross-check NPI 1285100826 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1285100826 active?

Yes, as of the latest NPPES snapshot, NPI 1285100826 is active (record last updated 2020-12-03).

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Bio-Medical Applications of Massachusetts, Inc. End-Stage Renal Disease (ESRD) Treatment Clinic/Center · Springfield, MA NPI 1871502583

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-03.