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

Mariella Petrowski, P.T.

Physical Therapist in Tewksbury, MA · enumerated 2007.

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

National Provider Identifier

1295914901

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Registry record

Entity type Individual (Type 1)

Name Mariella Petrowski

Credential P.T.

Sex Female

Practice address Tewksbury, MA, 01876

Phone (617) 909-3721

Fax (978) 412-9991

Enumeration date Oct 30, 2007

Last updated in NPPES Oct 30, 2007

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

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 8295 (MA) 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

Is NPI 1295914901 active?

Yes, as of the latest NPPES snapshot, NPI 1295914901 is active (record last updated 2007-10-30).

How do I verify Mariella Petrowski's NPI record?

Cross-check NPI 1295914901 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-30.