Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Liesl Shockley Grenier, M.D.

Dermatopathology Physician in Bethesda, MD · enumerated 2010.

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

National Provider Identifier

1003139718

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Registry record

Entity type Individual (Type 1)

Name Dr. Liesl Shockley Grenier

Credential M.D.

Sex Female

Practice address 8901 Rockville Pike, Bethesda, MD, 20889

Phone (301) 295-4000

Enumeration date Mar 9, 2010

Last updated in NPPES Feb 1, 2024

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License R3333 (TX) Secondary

207ND0900X Dermatopathology Physician Allopathic & Osteopathic Physicians · License R3333 (TX) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Liesl Grenier's NPI record?

Cross-check NPI 1003139718 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1003139718 active?

Yes, as of the latest NPPES snapshot, NPI 1003139718 is active (record last updated 2024-02-01).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-01.