Dr William A Fabricius, MD - Medicare Hematology/oncology in Greenville, MI

Dr William A Fabricius, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Greenville, Michigan. He graduated from medical school in 2002 and has 22 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Cancer And Hematology Centers Of Western Mi, P.c. and his current practice location is 615 S Bower St, Greenville, Michigan. You can reach out to his office (for appointments etc.) via phone at (616) 954-9800.

Dr William A Fabricius is licensed to practice in Maine (license number MD20974) 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 1568698645.

Contact Information

Dr William A Fabricius, MD
615 S Bower St,
Greenville, MI 48838-2614
(616) 954-9800
Not Available

Map and Direction




Physician's Profile

Full NameDr William A Fabricius
GenderMale
SpecialityHematology/oncology
Experience22 Years
Location615 S Bower St, Greenville, Michigan
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 A Fabricius graduated from medical school in 2002
  NPI Data:
  • NPI Number: 1568698645
  • Provider Enumeration Date: 06/03/2009
  • Last Update Date: 07/06/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 0446414395
  • Enrollment ID: I20210630001915

Medical Identifiers

Medical identifiers for Dr William A Fabricius such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1568698645NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology MD20974 (Maine)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Spectrum Health United HospitalGreenville, MIHospital
Spectrum HealthGrand rapids, MIHospital
Spectrum Health Big Rapids HospitalBig rapids, MIHospital
Spectrum Health Reed City HospitalReed city, MIHospital
Spectrum Health Gerber MemorialFremont, MIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Cancer And Hematology Centers Of Western Mi, P.c.408252679386

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 A Fabricius allows following entities to bill medicare on his behalf.
Entity NameCancer & Hematology Centers Of Western Mi, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528018389
PECOS PAC ID: 4082526793
Enrollment ID: O20031103000091

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 A Fabricius 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 A Fabricius, MD
5800 Foremost Dr Se Ste 300,
Grand Rapids, MI 49546-7062

Ph: () -
Dr William A Fabricius, MD
615 S Bower St,
Greenville, MI 48838-2614

Ph: (616) 954-9800

Reviews and Comments


Internal Medicine Doctors in Greenville, MI

Kevin Clark Reed, DO
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Phone: 616-754-3001    Fax: 616-754-3828
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Dr. David Crittenden Md, M.D.
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Phone: 616-225-8707    Fax: 616-225-8967
Gregory Raymond Page, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 707 S Greenville West Dr, Greenville, MI 48838
Phone: 616-754-3001    Fax: 616-754-3828

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).

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