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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr Mark D Winchester MD Pllc

Family Medicine Physician in Blanchard, OK · enumerated 2008 · authorized official Mark Winchester, Physician/Owner.

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

National Provider Identifier

1518110261

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Registry record

Entity type Organization (Type 2)
Legal business name Dr Mark D Winchester MD Pllc
Other name <Unavail>
Practice address 1019 N Council Ave, Blanchard, OK, 73010
Phone (405) 485-8100
Fax (405) 485-8104
Enumeration date Oct 28, 2008
Last updated in NPPES Oct 28, 2008

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 17303 (OK) Primary

Authorized official

Name Mark Winchester
Title Physician/Owner
Phone (405) 485-8100

Other identifiers

Identifier Type State Issuer
100186300A Medicaid OK -

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

Who is the authorized official for Dr Mark D Winchester MD Pllc?
NPPES lists Mark Winchester (Physician/Owner) as the authorized official for this organization.
What is the NPI number for Dr Mark D Winchester MD Pllc?
The NPI for Dr Mark D Winchester MD Pllc is 1518110261, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-28.