Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Diane Decker Knasin, MA LMHC NCC CADAC

Addiction (Substance Use Disorder) Counselor in Seekonk, MA · enumerated 2006.

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

National Provider Identifier

1033277256

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Registry record

Entity type Individual (Type 1)

Name Ms. Diane Decker Knasin

Credential MA LMHC NCC CADAC

Sex Female

Practice address 178 Lauren Drive, Seekonk, MA, 02771

Phone (508) 336-9895

Fax (508) 557-1014

Enumeration date Dec 4, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 619 (MA) Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License MHC00009 (RI) Secondary

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License LCDCS00030 (RI) Secondary

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License GR10297004 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
341811	Other	-	PHCS MULTIPLAN
73111137	Other	-	AETNA
LM0429	Other	MA	BC
1218634	Other	MA	BC MAGELLAN
10420	Other	-	MAGELLAN
6212949	Other	-	UHC
017915	Other	-	VALUE OPTIONS
2028804	Other	-	FIRST HEALTH
406351	Other	RI	BLUE CHIP MAGELLAN
71569	Other	RI	BC HEALTHMATE

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 Diane Knasin's NPI record?

Cross-check NPI 1033277256 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1033277256 active?

Yes, as of the latest NPPES snapshot, NPI 1033277256 is active (record last updated 2025-09-11).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.