Dr Gregory Wayne Grzesik, DO - Medicare Internal Medicine in Rhinelander, WI

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Dr Gregory Wayne Grzesik, DO is a medicare enrolled "Internal Medicine" physician in Rhinelander, Wisconsin. He went to Lake Erie College Of Osteopathic Medicine, Erie and graduated in 2013 and has 11 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Howard Young Medical Center Inc Of Woodruff Wisconsin, Aspirus Rhinelander And Tomahawk Hospitals And Clinics Inc and his current practice location is 2251 N Shore Dr, Rhinelander, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (715) 361-4700.

Dr Gregory Wayne Grzesik is licensed to practice in Wisconsin (license number 65797-21) 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 1316389372.

Contact Information

Dr Gregory Wayne Grzesik, DO
2251 N Shore Dr,
Rhinelander, WI 54501-6710
(715) 361-4700
Not Available

Map and Direction




Physician's Profile

Full NameDr Gregory Wayne Grzesik
GenderMale
SpecialityInternal Medicine
Experience11 Years
Location2251 N Shore Dr, Rhinelander, 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:
  • Dr Gregory Wayne Grzesik attended and graduated from Lake Erie College Of Osteopathic Medicine, Erie in 2013
  NPI Data:
  • NPI Number: 1316389372
  • Provider Enumeration Date: 07/18/2013
  • Last Update Date: 08/23/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 2961706643
  • Enrollment ID: I20160705002027

Medical Identifiers

Medical identifiers for Dr Gregory Wayne Grzesik such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1316389372NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 125-062888 (Illinois)Secondary
207R00000XInternal Medicine 65797-21 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ascension St Marys HospitalRhinelander, WIHospital
Ascension Sacred Heart HospitalTomahawk, WIHospital
Howard Young Medical CenterWoodruff, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Howard Young Medical Center Inc Of Woodruff Wisconsin418351960638
Aspirus Rhinelander And Tomahawk Hospitals And Clinics Inc9335059856321

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 Gregory Wayne Grzesik allows following entities to bill medicare on his behalf.
Entity NameAscension Medical Group-northern Wisconsin Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1265507537
PECOS PAC ID: 8426960022
Enrollment ID: O20031103000345
Entity NameAspirus Rhinelander & Tomahawk Hospitals & Clinics Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1144991340
PECOS PAC ID: 9335059856
Enrollment ID: O20031126000706
Entity NameAspirus Merrill Hospital & Clinics Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124084678
PECOS PAC ID: 0143117556
Enrollment ID: O20040301001179
Entity NameHoward Young Medical Center Inc Of Woodruff Wisconsin
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184673352
PECOS PAC ID: 4183519606
Enrollment ID: O20040419000970

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 Gregory Wayne Grzesik 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 Gregory Wayne Grzesik, DO
2251 N Shore Dr,
Rhinelander, WI 54501-6710

Ph: (715) 361-4700		Dr Gregory Wayne Grzesik, DO
2251 N Shore Dr,
Rhinelander, WI 54501-6710

Ph: (715) 361-4700

Reviews and Comments


Internal Medicine Doctors in Rhinelander, WI

Richard A Reinhart, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2251 N Shore Dr Ste 200, Rhinelander, WI 54501
Phone: 715-393-1220    
Christopher G Koeppl, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2251 N Shore Dr, Rhinelander, WI 54501
Phone: 715-361-4700    
Steven Brooks, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2251 N Shore Dr, Rhinelander, WI 54501
Phone: 715-361-4700    
Dr. Fariba Nikpour, D.O
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2251 N Shore Dr, Rhinelander, WI 54501
Phone: 715-361-2000    
Bruce A Kotila, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2251 North Shore Dr, Rhinelander, WI 54501
Phone: 715-361-4700    
Margaret Abel, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2251 N Shore Dr, Ste 200, Rhinelander, WI 54501
Phone: 715-361-4700    

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.