Dr William E Cayley Jr, MD MDIV - Medicare Family Practice in Eau Claire, WI

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Dr William E Cayley Jr, MD MDIV is a medicare enrolled "Family Medicine" physician in Eau Claire, Wisconsin. He went to Medical College Of Wisconsin and graduated in 1996 and has 30 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Oakleaf Clinics Inc and his current practice location is 3802 Oakwood Mall Dr, Eau Claire, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (715) 839-9280.

Dr William E Cayley Jr is licensed to practice in Wisconsin (license number 39025-20) 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 1053340067.

Contact Information

Dr William E Cayley Jr, MD MDIV
3802 Oakwood Mall Dr,
Eau Claire, WI 54701-3016
(715) 839-9280
Not Available

Map and Direction




Physician's Profile

Full NameDr William E Cayley Jr
GenderMale
SpecialityFamily Practice
Experience30 Years
Location3802 Oakwood Mall Dr, 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:
  • Dr William E Cayley Jr attended and graduated from Medical College Of Wisconsin in 1996
  NPI Data:
  • NPI Number: 1053340067
  • Provider Enumeration Date: 07/02/2006
  • Last Update Date: 03/21/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7416855523
  • Enrollment ID: I20031229000321

Medical Identifiers

Medical identifiers for Dr William E Cayley Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1053340067NPI-NPPES
32472600MedicaidWI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 39025-20 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Oakleaf Surgical HospitalAltoona, WIHospital
Mayo Clinic Health System OakridgeOsseo, WIHospital
Augusta Health And RehabilitationAugusta, WINursing home

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Oakleaf Clinics Inc448683132890

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 William E Cayley Jr allows following entities to bill medicare on his behalf.
Entity NamePrevea Clinic Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306869276
PECOS PAC ID: 0042123150
Enrollment ID: O20031106000034
Entity NameOakleaf Clinics Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1295127082
PECOS PAC ID: 4486831328
Enrollment ID: O20110602000195

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 William E Cayley Jr 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 William E Cayley Jr, MD MDIV
719 W Hamilton Ave Ste B,
Eau Claire, WI 54701-6970

Ph: (715) 552-9784		Dr William E Cayley Jr, MD MDIV
3802 Oakwood Mall Dr,
Eau Claire, WI 54701-3016

Ph: (715) 839-9280

Reviews and Comments


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Omar Yasser Elmahdy Hafz, MBBCH
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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.