Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Mark Mcclellan, MD

Family Medicine Physician in Crosby, TX · enumerated 2005 · practices at D M Mcclellan MD PA.

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

National Provider Identifier

1679574826

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. David Mark Mcclellan

Credential MD

Sex Male

Practice address 5214 S Main St, Crosby, TX, 77532

Phone (281) 328-4888

Fax (281) 328-8345

Enumeration date Aug 9, 2005

Last updated in NPPES Jan 14, 2009

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License G0476 (TX) 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
00Z953	Other	TX	MEDICARE PIN

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 David Mcclellan's NPI record?

Cross-check NPI 1679574826 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1679574826 active?

Yes, as of the latest NPPES snapshot, NPI 1679574826 is active (record last updated 2009-01-14).

Other providers at this practice address

Browse all →

D M Mcclellan MD PA Family Medicine Physician · Crosby, TX NPI 1750538187

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-14.