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

Dr. Marie Diane Cooper, PH.D.

Speech-Language Pathologist in Upper Marlboro, MD · enumerated 2008 · practices at Care Speech Language Pathology Service, LLC.

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

National Provider Identifier

1659536506

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Registry record

Entity type Individual (Type 1)

Name Dr. Marie Diane Cooper

Credential PH.D.

Sex Female

Practice address Upper Marlboro, MD, 20772

Phone (202) 386-7745

Fax (301) 868-6212

Enumeration date Jul 21, 2008

Last updated in NPPES Jul 21, 2008

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 01017829 (MD) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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.

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Frequently asked questions

What specialty is Marie Cooper?

Marie Cooper is registered in NPPES with the primary taxonomy of Speech-Language Pathologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Care Speech Language Pathology Service, LLC Speech-Language Pathologist · Upper Marlboro, MD NPI 1841663168

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-21.