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

Erin Mackenzie Holden, LADC, CCS

Q: What is the NPI number for Erin Holden?

The National Provider Identifier (NPI) for Erin Holden is 1053983072, a Type 1 (individual) record in the CMS NPPES registry.

Addiction (Substance Use Disorder) Counselor in Casco, ME · enumerated 2021.

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

National Provider Identifier

1053983072

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Registry record

Entity type Individual (Type 1)

Name Erin Mackenzie Holden

Credential LADC, CCS

Sex Female

Practice address Casco, ME, 04015

Phone (207) 595-6854

Enumeration date Jul 12, 2021

Last updated in NPPES Jul 12, 2021

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers 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

What is the NPI number for Erin Holden?

The National Provider Identifier (NPI) for Erin Holden is 1053983072, a Type 1 (individual) record in the CMS NPPES registry.

Where does Erin Holden practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-12.