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

Kathleen M Harder MD PLLC

Organization Internal Medicine Physician · NPI 1669678124

Kathleen M Harder MD PLLC is an Internal Medicine Physician in Stillwater, Oklahoma. Registered with an NPI since 2007.

In the registry since
2007
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

709 S Western Rd
Stillwater, OK 74074-4126
Phone: (405) 707-9800
Fax: (405) 707-0004
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X

Record details

NPI number1669678124
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Kathleen Harder — Owner-Physician · (405) 707-9800
Other names Stillwater Internal Medicine
NPI enumeratedJune 22, 2007
Last updated in NPPESMarch 20, 2008
Mailing addressPo Box 639, Stillwater, OK 74076-0639

Other providers in Stillwater