Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mallory Noel Maclellan, MS, OTR/L

Occupational Therapist in Frederick, MD · enumerated 2024.

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

National Provider Identifier

1174343925

Verified

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Registry record

Entity type Individual (Type 1)

Name Mallory Noel Maclellan

Credential MS, OTR/L

Sex Female

Practice address 4640 Wedgewood Blvd Ste 101-105, Frederick, MD, 21703

Phone (240) 457-9558

Enumeration date Oct 16, 2024

Last updated in NPPES Oct 16, 2024

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 10386 (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

Is NPI 1174343925 active?

Yes, as of the latest NPPES snapshot, NPI 1174343925 is active (record last updated 2024-10-16).

How do I verify Mallory Maclellan's NPI record?

Cross-check NPI 1174343925 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Julianna Freeze Physical Therapist · Frederick, MD NPI 1598420440 Lakeia Walker Speech-Language Pathologist · Frederick, MD NPI 1366271850 Alexa Gonzalez Occupational Therapist · Frederick, MD NPI 1265262539 Colleen Granata Speech-Language Pathologist · Frederick, MD NPI 1164256905 Taylor Zaranski Physical Therapist · Frederick, MD NPI 1841014123

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-16.