Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Brian Buckner, M.D.

Q: What is the NPI number for Mark Buckner?

The National Provider Identifier (NPI) for Mark Buckner is 1396752879, a Type 1 (individual) record in the CMS NPPES registry.

Emergency Medicine Physician in Sherman, TX · enumerated 2006.

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

National Provider Identifier

1396752879

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Registry record

Entity type Individual (Type 1)

Name Mark Brian Buckner

Credential M.D.

Sex Male

Practice address 913 Cottonwood Dr, Sherman, TX, 75090

Phone (903) 868-9565

Fax (903) 893-8916

Enumeration date Aug 1, 2006

Last updated in NPPES Mar 6, 2012

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License J1898 (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
752684562	Medicaid	TX	-
8W0344	Other	TX	BCBS
123463510	Medicaid	TX	-
123463511	Medicaid	TX	-
123463507	Medicaid	TX	-
123463509	Medicaid	TX	-
123463508	Medicaid	TX	-
8W0739	Other	TX	BCBS

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

Where does Mark Buckner practice?

The practice location on file with NPPES is in Sherman, TX. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mark Buckner?

The National Provider Identifier (NPI) for Mark Buckner is 1396752879, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Herve Hosek Clinic/Center · Sherman, TX NPI 1740392786 Herve D. Hosek M D Family Medicine Physician · Sherman, TX NPI 1780866673 Sherman Immediate Care Clinic Pllc Urgent Care Clinic/Center · Sherman, TX NPI 1962702431 Mark Buckner MD PA Emergency Care Clinic/Center · Sherman, TX NPI 1497038913 Ednah Silmon Psychiatric/Mental Health Nurse Practitioner · Sherman, TX NPI 1437663788

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-06.