Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Julia Mast, OTR/L

Occupational Therapist in Arnold, MD · enumerated 2021.

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

National Provider Identifier

1043977382

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Registry record

Entity type Individual (Type 1)

Name Julia Mast

Credential OTR/L

Sex Female

Practice address 406 Howard Ave, Arnold, MD, 21012

Phone (610) 724-9507

Enumeration date Nov 22, 2021

Last updated in NPPES Nov 22, 2021

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 06231 (MD) 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

How do I verify Julia Mast's NPI record?

Cross-check NPI 1043977382 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1043977382 active?

Yes, as of the latest NPPES snapshot, NPI 1043977382 is active (record last updated 2021-11-22).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-22.