Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison Marie Oster, PT, DPT

Physical Therapist in Grayslake, IL · enumerated 2024.

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

National Provider Identifier

1982440020

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Registry record

Entity type Individual (Type 1)

Name Allison Marie Oster

Credential PT, DPT

Sex Female

Practice address 1475 E Belvidere Rd, Pavilion C, Suite 173, Grayslake, IL, 60030

Phone (630) 933-1500

Enumeration date Jul 8, 2024

Last updated in NPPES Jul 8, 2024

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 070.028312 (IL) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

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 specialty is Allison Oster?

Allison Oster is registered in NPPES with the primary taxonomy of Physical Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-08.