Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Amy Diane Duff, M.S.W.

Social Worker in Coldwater, MI · enumerated 2007 · practices at Kerry A Mello Lmsw.

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

National Provider Identifier

1447440805

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Registry record

Entity type Individual (Type 1)

Name Ms. Amy Diane Duff

Credential M.S.W.

Sex Female

Practice address 200 Orleans Blvd, Coldwater, MI, 49036

Phone (517) 278-2129

Fax (517) 279-8172

Enumeration date Jul 31, 2007

Last updated in NPPES Jul 31, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 6801087378 (MI) Primary

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

Is NPI 1447440805 active?

Yes, as of the latest NPPES snapshot, NPI 1447440805 is active (record last updated 2007-07-31).

How do I verify Amy Duff's NPI record?

Cross-check NPI 1447440805 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-31.