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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Heidi Lynn Thacker

Speech-Language Pathologist in Fairfield, ME · enumerated 2018.

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

National Provider Identifier

1639652670

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Registry record

Entity type Individual (Type 1)
Name Heidi Lynn Thacker
Sex Female
Practice address Fairfield, ME, 04937
Phone (207) 453-4200
Enumeration date Sep 14, 2018
Last updated in NPPES Sep 14, 2018

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License SP1011 (ME) 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.

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Frequently asked questions

How do I verify Heidi Thacker's NPI record?
Cross-check NPI 1639652670 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1639652670 active?
Yes, as of the latest NPPES snapshot, NPI 1639652670 is active (record last updated 2018-09-14).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-14.