Dr Karen M Gremminger, MD - Medicare Medical Oncology in Oshkosh, WI

Dr Karen M Gremminger, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Oshkosh, Wisconsin. She went to Texas Tech University Health Science Center School Of Medicine and graduated in 1991 and has 33 years of diverse experience with area of expertise as Medical Oncology. She is a member of the group practice Cobre Valley Regional Medical Center, San Carlos Apache Healthcare Corporation and her current practice location is 491 S Washburn St, Oshkosh, Wisconsin. You can reach out to her office (for appointments etc.) via phone at (920) 292-5555.

Dr Karen M Gremminger is licensed to practice in Arizona (license number 64504) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1174668404.

Contact Information

Dr Karen M Gremminger, MD
491 S Washburn St,
Oshkosh, WI 54904-6733
(920) 292-5555
Not Available

Map and Direction




Physician's Profile

Full NameDr Karen M Gremminger
GenderFemale
SpecialityMedical Oncology
Experience33 Years
Location491 S Washburn St, Oshkosh, Wisconsin
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Karen M Gremminger attended and graduated from Texas Tech University Health Science Center School Of Medicine in 1991
  NPI Data:
  • NPI Number: 1174668404
  • Provider Enumeration Date: 02/21/2007
  • Last Update Date: 02/16/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3678545902
  • Enrollment ID: I20210909003593

Medical Identifiers

Medical identifiers for Dr Karen M Gremminger such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1174668404NPI-NPPES
098945MedicaidAZ
32367700MedicaidWI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 38760 (Wisconsin)Secondary
207RH0003XInternal Medicine - Hematology & Oncology 64504 (Arizona)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Cobre Valley Regional Medical CenterGlobe, AZHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Cobre Valley Regional Medical Center064818169331
San Carlos Apache Healthcare Corporation0648580597116

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Karen M Gremminger allows following entities to bill medicare on her behalf.
Entity NameCobre Valley Regional Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1871566521
PECOS PAC ID: 0648181693
Enrollment ID: O20040312001228

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Karen M Gremminger is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Karen M Gremminger, MD
122 E College Ave,
Appleton, WI 54911-5794

Ph: (920) 996-3264
Dr Karen M Gremminger, MD
491 S Washburn St,
Oshkosh, WI 54904-6733

Ph: (920) 292-5555

Reviews and Comments


Internal Medicine Doctors in Oshkosh, WI

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Robert D. Geck, M.D.
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Practice Location: 855 N Westhaven Dr, Oshkosh, WI 54904
Phone: 920-303-8700    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

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