Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr Mark D Winchester MD PLLC

Organization Family Medicine Physician · NPI 1518110261

Dr Mark D Winchester MD PLLC is a Family Medicine Physician in Blanchard, Oklahoma. Licensed in Oklahoma. Registered with an NPI since 2008.

Licensed in
OK
In the registry since
2008
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1019 N Council Ave
Blanchard, OK 73010-8003
Phone: (405) 485-8100
Fax: (405) 485-8104
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 17303 (OK)

Record details

NPI number1518110261
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Winchester — Physician/Owner · (405) 485-8100
Other names Mark Winchester, M.D.
NPI enumeratedOctober 28, 2008
Last updated in NPPESOctober 28, 2008
Mailing addressPo Box 1789, Blanchard, OK 73010-1789

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