Dr William C Leach Jr, DO - Medicare Obstetrics/gynecology in Manitowoc, WI

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Dr William C Leach Jr, DO is a medicare enrolled "Obstetrics & Gynecology" physician in Manitowoc, Wisconsin. He graduated from medical school in 2002 and has 24 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice Mercy Health System Corporation, Mercy Health System Corporation and his current practice location is 600 York St, Manitowoc, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (920) 320-8742.

Dr William C Leach Jr is licensed to practice in Wisconsin (license number 46781) 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 1558399279.

Contact Information

Dr William C Leach Jr, DO
600 York St,
Manitowoc, WI 54220-6825
(920) 320-8742
(920) 320-8775

Map and Direction




Physician's Profile

Full NameDr William C Leach Jr
GenderMale
SpecialityObstetrics/gynecology
Experience24 Years
Location600 York St, Manitowoc, 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 C Leach Jr graduated from medical school in 2002
  NPI Data:
  • NPI Number: 1558399279
  • Provider Enumeration Date: 06/29/2006
  • Last Update Date: 04/20/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7719980911
  • Enrollment ID: I20231117002212

Medical Identifiers

Medical identifiers for Dr William C Leach Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1558399279NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 46781 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Walworth Hospital & Medical CenterLake geneva, WIHospital
Mercy Health System CorpJanesville, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Health System Corporation7416860440757
Mercy Health System Corporation7416860440757

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 C Leach Jr allows following entities to bill medicare on his behalf.
Entity NameRockford Health Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043242886
PECOS PAC ID: 2567374036
Enrollment ID: O20031103000584
Entity NameMercy Health System Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598718603
PECOS PAC ID: 7416860440
Enrollment ID: O20031111000307

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 C Leach 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 C Leach Jr, DO
600 York St,
Manitowoc, WI 54220-6825

Ph: (920) 320-8742		Dr William C Leach Jr, DO
600 York St,
Manitowoc, WI 54220-6825

Ph: (920) 320-8742

Reviews and Comments


Obstetrics & Gynecology Doctors in Manitowoc, WI

Robert Nolan Hetz, MD
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 304 N Rapids Rd, Manitowoc, WI 54220
Phone: 920-683-0321    Fax: 920-683-9078
Sivakami Kangayappan, M.D
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 1220 Fleetwood Dr, Manitowoc, WI 54220
Phone: 920-684-9415    
Dr. Stephanie Wise Grosvenor, D.O.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 1650 S 41st St, Manitowoc, WI 54220
Phone: 920-476-6200    

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.