Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Grace Weeks, CRNP

Family Nurse Practitioner in California, MD · enumerated 2025 · practices at Medstar Medical Group - Southern Maryland LLC.

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

National Provider Identifier

1528923604

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Registry record

Entity type Individual (Type 1)

Name Mary Grace Weeks

Credential CRNP

Sex Female

Practice address 22590 Shady Court, California, MD, 20619

Phone (301) 373-7900

Fax (301) 373-6900

Enumeration date Dec 19, 2025

Last updated in NPPES May 1, 2026

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R254662 (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.

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Frequently asked questions

How do I verify Mary Grace Weeks's NPI record?

Cross-check NPI 1528923604 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1528923604 active?

Yes, as of the latest NPPES snapshot, NPI 1528923604 is active (record last updated 2026-05-01).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-01.