NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Allison Christofferson, M.S CF-SLP

Speech-Language Pathologist in Suffolk, VA · enumerated 2015 · practices at Suffolk City Public Schools.

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

National Provider Identifier

1467823203

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mrs. Allison Christofferson
Credential M.S CF-SLP
Sex Female
Practice address 100 N Main St, Suffolk, VA, 23434
Enumeration date Oct 19, 2015
Last updated in NPPES Dec 7, 2018

Taxonomy & licenses

2355S0801X Speech-Language Assistant Speech, Language and Hearing Service Providers Secondary
235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 2204000086 (VA) 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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Allison Christofferson?
Allison Christofferson is registered in NPPES with the primary taxonomy of Speech-Language Pathologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-12-07.