NPI Portal NPI Lookup & Verification

Mrs. Mackenzie Dumar-Sillick, SLP

Mrs. Mackenzie Dumar-Sillick is a Speech-Language Pathologist provider (Speech-Language Pathologist) practicing in Baltimore, MD, registered in the NPPES registry with NPI 1275615460 since 2006. The credential SLP stands for Speech-Language Pathologist.

✓ Active NPI ✓ Valid NPI checksum

NPI 1275615460
Entity type Individual (Type 1)
Name Mrs. Mackenzie Dumar-Sillick
Credential SLP
Sex Female
Practice address 1026 CROMWELL BRIDGE RD, Baltimore, MD, 21286
Phone 4105831515
Fax 4105832491
Enumeration date 2006-10-19
Last updated in NPPES 2007-07-08

Taxonomy & licenses

Taxonomy code Specialty Primary License State
235Z00000X Speech-Language Pathologist Primary 05360 MD

SLP — Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP credential

Copy-ready billing details
Provider: Mackenzie Dumar-Sillick, SLP
NPI: 1275615460
Taxonomy: 235Z00000X (Speech-Language Pathologist)
Address: 1026 CROMWELL BRIDGE RD, Baltimore, MD, 21286

Other providers at this practice address

NPI Name Type Specialty Location
1770663098 Dawn Carey Individual Occupational Therapist Baltimore, MD
1326128869 Bonnie Allen Individual Physical Therapist Baltimore, MD
1538249925 Elizabeth Appel Individual Physical Therapist Baltimore, MD
1902986474 Care Resources Organization Rehabilitation Clinic/Center Baltimore, MD
1801976170 Lynn Bacharach Individual Physical Therapist Baltimore, MD
1477634756 Laura Cochran Individual Occupational Therapist Baltimore, MD
1174604920 Romy Dorsey Individual Occupational Therapist Baltimore, MD
1043391865 Carolyn Dinatale Individual Speech-Language Pathologist Baltimore, MD

Verify this record

Cross-check NPI 1275615460 against the authoritative CMS record: view Mrs. Mackenzie Dumar-Sillick on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

How do I verify Mackenzie Dumar-Sillick's NPI record?
Cross-check NPI 1275615460 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1275615460 active?
Yes — as of the latest NPPES snapshot, NPI 1275615460 is active (record last updated 2007-07-08).

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.