Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Clark Gray, M.D.

Otolaryngology Physician in Baltimore, MD · enumerated 2006.

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

National Provider Identifier

1942239496

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Registry record

Entity type Individual (Type 1)

Name Dr. William Clark Gray

Credential M.D.

Sex Male

Practice address 16 S Eutaw St, Suite 500, Baltimore, MD, 21201

Phone (410) 328-5828

Fax (410) 328-5827

Enumeration date Jun 30, 2006

Last updated in NPPES Jun 9, 2021

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License D17424 (MD) Primary

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

Other identifiers

Identifier	Type	State	Issuer
914651200	Medicaid	MD	-

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 William Gray's NPI record?

Cross-check NPI 1942239496 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1942239496 active?

Yes, as of the latest NPPES snapshot, NPI 1942239496 is active (record last updated 2021-06-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-09.