William John Schaeffer, DO - Medicare Emergency Medicine in Milwaukee, WI

William John Schaeffer, DO is a medicare enrolled "Emergency Medicine" physician in Milwaukee, Wisconsin. His current practice location is 9200 W Wisconsin Ave, Milwaukee, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (414) 955-6450.

William John Schaeffer is licensed to practice in Wisconsin (license number 80141) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1487174405.

Contact Information

William John Schaeffer, DO
9200 W Wisconsin Ave,
Milwaukee, WI 53226-3522
(414) 955-6450
(414) 955-0082

Map and Direction




Physician's Profile

Full NameWilliam John Schaeffer
GenderMale
SpecialityEmergency Medicine
Location9200 W Wisconsin Ave, Milwaukee, Wisconsin
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1487174405
  • Provider Enumeration Date: 06/21/2017
  • Last Update Date: 07/06/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3577832013
  • Enrollment ID: I20210820001988

Medical Identifiers

Medical identifiers for William John Schaeffer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1487174405NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 80141 (Wisconsin)Primary

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 John Schaeffer allows following entities to bill medicare on his behalf.
Entity NameHurley Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982630844
PECOS PAC ID: 2961308481
Enrollment ID: O20031208000375

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 John Schaeffer 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 John Schaeffer, DO
9200 W Wisconsin Ave,
Milwaukee, WI 53226-3522

Ph: (414) 955-6450
William John Schaeffer, DO
9200 W Wisconsin Ave,
Milwaukee, WI 53226-3522

Ph: (414) 955-6450

Reviews and Comments


Emergency Medicine Doctors in Milwaukee, WI

Dr. Colleen Ann Crowe, M.D., M.P.H.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 9200 W Wisconsin Ave, Milwaukee, WI 53226
Phone: 414-805-6469    
Natalia Rumas, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2323 N Lake Dr, Milwaukee, WI 53211
Phone: 414-290-6720    Fax: 414-290-6755
Adam C Ankrum, D.O.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 111 E Wisconsin Ave, Suite 2000, Milwaukee, WI 53202
Phone: 414-290-6720    Fax: 414-290-6755
Andrea Michelle Kraus, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3237 S 16th St Ste 100, Milwaukee, WI 53215
Phone: 414-647-5203    Fax: 414-858-2236
Lisa Hubbard, CFNP
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 5000 W Chambers St, Milwaukee, WI 53210
Phone: 414-447-2000    Fax: 414-874-4393
Mckenna Jean Knych,
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 9200 W Wisconsin Ave, Milwaukee, WI 53226
Phone: 414-805-6450    Fax: 414-805-6464
Dr. Alina M Winans, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 945 N 12th St, Milwaukee, WI 53233
Phone: 414-219-2000    Fax: 414-219-6650

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.