William C Haselow, MD - Medicare Emergency Medicine in Eau Claire, WI

William C Haselow, MD is a medicare enrolled "Emergency Medicine" physician in Eau Claire, Wisconsin. He went to Wayne State University School Of Medicine and graduated in 1984 and has 40 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice St Josephs Hospital Of The Hospital Sisters Of The Third Order Of St F and his current practice location is 900 W Clairemont Ave, Eau Claire, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (414) 290-6715.

William C Haselow is licensed to practice in Wisconsin (license number 30013-020) 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 1811942444.

Contact Information

William C Haselow, MD
900 W Clairemont Ave,
Eau Claire, WI 54701-6122
(414) 290-6715
(414) 290-6755

Map and Direction




Physician's Profile

Full NameWilliam C Haselow
GenderMale
SpecialityEmergency Medicine
Experience40 Years
Location900 W Clairemont Ave, Eau Claire, 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 C Haselow attended and graduated from Wayne State University School Of Medicine in 1984
  NPI Data:
  • NPI Number: 1811942444
  • Provider Enumeration Date: 05/23/2006
  • Last Update Date: 12/17/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 7618877804
  • Enrollment ID: I20050725000575

Medical Identifiers

Medical identifiers for William C Haselow such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1811942444NPI-NPPES
930068403OtherWIMEDICARE RAILROAD
31809700MedicaidWI
930072839OtherWIMEDICARE RAILROAD
930046182OtherWIMEDICARE RAILROAD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 30013-020 (Wisconsin)Primary
207P00000XEmergency Medicine 30013-20 (Wisconsin)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Sacred Heart HospitalEau claire, WIHospital
St Joseph's HospitalChippewa falls, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
St Josephs Hospital Of The Hospital Sisters Of The Third Order Of St F387048859615

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 C Haselow allows following entities to bill medicare on his behalf.
Entity NameSt Josephs Hospital Of The Hospital Sisters Of The Third Order Of St F
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164429908
PECOS PAC ID: 3870488596
Enrollment ID: O20040220000036
Entity NameDoor County Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093743874
PECOS PAC ID: 5395735088
Enrollment ID: O20040514000588
Entity NameFroedtert &the Medical College Of Wisconsin Community Physicians Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568787448
PECOS PAC ID: 3678760063
Enrollment ID: O20101210000699

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 C Haselow 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 C Haselow, MD
111 E Wisconsin Ave, Suite 2000,
Milwaukee, WI 53202-4815

Ph: (414) 290-6720
William C Haselow, MD
900 W Clairemont Ave,
Eau Claire, WI 54701-6122

Ph: (414) 290-6715

Reviews and Comments


Emergency Medicine Doctors in Eau Claire, WI

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Matthew Olmstead, D.O.
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Tracy Marko, MD
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Phone: 715-838-5222    
Cheryl M Colbenson, D.O.
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Practice Location: 900 W Clairemont Ave, Eau Claire, WI 54701
Phone: 715-717-4121    

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.