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

Ms. Melanie Sison, PTA

Physical Therapy Assistant in Wilmington, CA · enumerated 2013 · practices at Northstar Rehabilitation, Inc..

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

National Provider Identifier

1386074425

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Registry record

Entity type Individual (Type 1)
Name Ms. Melanie Sison
Credential PTA
Sex Female
Practice address Wilmington, CA, 90744
Phone (773) 934-0431
Enumeration date Nov 26, 2013
Last updated in NPPES Nov 26, 2013

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

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License AT6931 (CA) 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

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 Melanie Sison?
Melanie Sison is registered in NPPES with the primary taxonomy of Physical Therapy Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-26.