William T Witmer, MD - Medicare Cardiovascular Disease (cardiology) in Green Bay, WI

William T Witmer, MD is a medicare enrolled "Internal Medicine - Interventional Cardiology" physician in Green Bay, Wisconsin. He went to Vanderbilt University School Of Medicine and graduated in 1988 and has 36 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Baycare Aurora Llc and his current practice location is 2845 Greenbrier Rd Ste 310, Green Bay, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (920) 288-8300.

William T Witmer is licensed to practice in Wisconsin (license number 30867) 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 1033130653.

Contact Information

William T Witmer, MD
2845 Greenbrier Rd Ste 310,
Green Bay, WI 54311-6519
(920) 288-8300
(920) 288-8305

Map and Direction




Physician's Profile

Full NameWilliam T Witmer
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience36 Years
Location2845 Greenbrier Rd Ste 310, Green Bay, 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:
  • William T Witmer attended and graduated from Vanderbilt University School Of Medicine in 1988
  NPI Data:
  • NPI Number: 1033130653
  • Provider Enumeration Date: 07/21/2006
  • Last Update Date: 09/30/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 4183672512
  • Enrollment ID: I20050112000154

Medical Identifiers

Medical identifiers for William T Witmer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1033130653NPI-NPPES
34603000MedicaidWI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0011XInternal Medicine - Interventional Cardiology 30867 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Aurora Baycare Medical CtrGreen bay, WIHospital
Aurora Medical Ctr Manitowoc CountyTwo rivers, WIHospital
Door County Medical CenterSturgeon bay, WIHospital
Bay Area Medical CenterMarinette, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Baycare Aurora Llc0244130557173

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. William T Witmer allows following entities to bill medicare on his behalf.
Entity NameBaycare Clinic Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588609648
PECOS PAC ID: 4385554328
Enrollment ID: O20031105000087
Entity NameAurora Medical Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1427271378
PECOS PAC ID: 6709794258
Enrollment ID: O20031105000725
Entity NameBaycare Aurora Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1255387726
PECOS PAC ID: 0244130557
Enrollment ID: O20051012000579

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. William T Witmer 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
William T Witmer, MD
2845 Greenbrier Rd Ste 310, Po Box 8900,
Green Bay, WI 54308-8900

Ph: (920) 288-8300
William T Witmer, MD
2845 Greenbrier Rd Ste 310,
Green Bay, WI 54311-6519

Ph: (920) 288-8300

Reviews and Comments


Internal Medicine Doctors in Green Bay, WI

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Medicare: Accepting Medicare Assignments
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Phone: 920-435-8326    Fax: 920-430-4659

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.