Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Lois Ann Masiello, MPT

Orthopedic Physical Therapist in Manassas, VA · enumerated 2006.

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

National Provider Identifier

1619065117

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Registry record

Entity type Individual (Type 1)

Name Ms. Lois Ann Masiello

Credential MPT

Sex Female

Practice address 9010 Hornbaker Rd, Suite 101, Manassas, VA, 20109

Phone (703) 361-9677

Fax (703) 361-9678

Enumeration date Oct 10, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2251X0800X Orthopedic Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 2305006057 (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

Where does Lois Masiello practice?

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

What is the NPI number for Lois Masiello?

The National Provider Identifier (NPI) for Lois Masiello is 1619065117, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.