NPI Portal NPI Lookup & Verification

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

Marni Greenberg, M.S., CCC-SLP

Speech-Language Pathologist in North Bethesda, MD · enumerated 2019.

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

National Provider Identifier

1376191759

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Marni Greenberg
Credential M.S., CCC-SLP
Sex Female
Practice address North Bethesda, MD, 20852
Phone (301) 468-1111
Enumeration date Aug 29, 2019
Last updated in NPPES Jul 6, 2022

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

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 08466 (MD) Secondary
235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers 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 Marni Greenberg practice?
The practice location on file with NPPES is in North Bethesda, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marni Greenberg?
The National Provider Identifier (NPI) for Marni Greenberg is 1376191759, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-06.