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

Karl C Larson, MD

Individual provider Family Medicine Physician · NPI 1063528529

Karl C Larson, MD is a Family Practice in Oshkosh, Wisconsin. Graduated from Medical College of Wisconsin in 1981, 45 years ago. Practices with Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc, a 554-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
45
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2725 Jackson St
Oshkosh, WI 54901-1513
Phone: (920) 223-7500
Fax: (920) 223-7630
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 28253 (WI)

Record details

NPI number1063528529
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 21, 2006
Last updated in NPPESDecember 17, 2009
Mailing address2725 Jackson St, Oshkosh, WI 54901-1513

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1981 (45 years in practice)
Group practice Aspirus Rhinelander And Tomahawk Hospitals And Clinics, Inc. — 554 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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