Gregory N Geissinger, PAC - Medicare Physician Assistant in Marshfield, WI

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Gregory N Geissinger, PAC is a medicare enrolled "Physician Assistant" in Marshfield, Wisconsin. He graduated from nursing school in 2000 and has 26 years of diverse experience with area of expertise as Physician Assistant. He is a member of the group practice Mchs Hospitals Inc, Aspirus Medical Group, Inc. and his current practice location is 1000 N Oak Ave, Marshfield, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (715) 387-5297.

Gregory N Geissinger is licensed to practice in Wisconsin (license number 1225) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1699882969.

Contact Information

Gregory N Geissinger, PAC
1000 N Oak Ave,
Marshfield, WI 54449
(715) 387-5297
Not Available

Map and Direction




Provider's Profile

Full NameGregory N Geissinger
GenderMale
SpecialityPhysician Assistant
Experience26 Years
Location1000 N Oak Ave, Marshfield, Wisconsin
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Gregory N Geissinger graduated from nursing school in 2000
  NPI Data:
  • NPI Number: 1699882969
  • Provider Enumeration Date: 08/24/2006
  • Last Update Date: 11/17/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 0941480735
  • Enrollment ID: I20110210001156

Medical Identifiers

Medical identifiers for Gregory N Geissinger such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1699882969NPI-NPPES
42996700MedicaidWI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363A00000XPhysician Assistant 1225 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Aspirus Wausau HospitalWausau, WIHospital
Aspirus Rhinelander HospitalRhinelander, WIHospital
Marshfield Medical CenterMarshfield, WIHospital
Aspirus Ironwood HospitalIronwood, MIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mchs Hospitals Inc56980711731195
Aspirus Medical Group, Inc.1052223625272

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. Gregory N Geissinger allows following entities to bill medicare on his behalf.
Entity NameAspirus Medical Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1003021452
PECOS PAC ID: 1052223625
Enrollment ID: O20031103000267
Entity NameMarshfield Clinic Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952347981
PECOS PAC ID: 2264345206
Enrollment ID: O20031106000590
Entity NameAspirus Wausau Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922321140
PECOS PAC ID: 6406757442
Enrollment ID: O20040114000297
Entity NameMchs Hospitals Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093221434
PECOS PAC ID: 5698071173
Enrollment ID: O20180208000096

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. Gregory N Geissinger 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
Gregory N Geissinger, PAC
1000 N Oak Ave,
Marshfield, WI 54449-5777

Ph: Not Available		Gregory N Geissinger, PAC
1000 N Oak Ave,
Marshfield, WI 54449

Ph: (715) 387-5297

Reviews and Comments


Physician Assistant Nurses in Marshfield, WI

Eugene H. Larson, PA
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Morgan J Behling, PA
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Practice Location: 1000 N Oak Ave, Marshfield, WI 54449
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Michael J. Bauman, PA
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Casee Bell, PA-C
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Practice Location: 1000 N Oak Ave, Marshfield, WI 54449
Phone: 715-387-5744    
Jenna A Weisenberger, PA
Physician Assistant
Medicare: Accepting Medicare Assignments
Practice Location: 1000 N Oak Ave, Marshfield, WI 54449
Phone: 715-387-5511    
Tera R Wiesman, PAC
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Medicare: Accepting Medicare Assignments
Practice Location: 1000 N Oak Ave, Marshfield, WI 54449
Phone: 800-782-8581    
Hannah Flak,
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Medicare: Accepting Medicare Assignments
Practice Location: 1000 North Oak Avenue, Marshfield, WI 54449
Phone: 715-387-5511    

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.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.