Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Cottrell Lang Jr., M.D.

Diagnostic Radiology Physician in Atlanta, GA · enumerated 2005.

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

National Provider Identifier

1346231925

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Registry record

Entity type Individual (Type 1)

Name Dr. William Cottrell Lang Jr.

Credential M.D.

Sex Male

Practice address 3193 Howell Mill Rd Nw, Suite 110, Atlanta, GA, 30327

Phone (404) 352-0444

Fax (404) 352-2529

Enumeration date Nov 2, 2005

Last updated in NPPES May 19, 2008

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 012509 (GA) 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
000922061J	Medicaid	GA	-
300027801	Other	GA	RAILROAD MEDICARE
P00092169	Other	GA	RAILROAD MEDICARE

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

Is NPI 1346231925 active?

Yes, as of the latest NPPES snapshot, NPI 1346231925 is active (record last updated 2008-05-19).

How do I verify William Lang's NPI record?

Cross-check NPI 1346231925 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-19.