Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison Colleen Holmberg, M.S. CCC-SLP/A

Audiologist in Northampton, MA · enumerated 2009.

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

National Provider Identifier

1811124696

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Registry record

Entity type Individual (Type 1)

Name Allison Colleen Holmberg

Credential M.S. CCC-SLP/A

Sex Female

Practice address 243 King St Ste 105, Northampton, MA, 01060

Phone (413) 586-9572

Enumeration date Jun 18, 2009

Last updated in NPPES Jun 23, 2018

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 3388 (MA) Secondary

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 486 (MA) 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 Allison Holmberg?

The National Provider Identifier (NPI) for Allison Holmberg is 1811124696, a Type 1 (individual) record in the CMS NPPES registry.

Where does Allison Holmberg practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-23.