Dr William Michael Brennan Jr, DDS - Medicare Dentist in Downers Grove, IL

Dr William Michael Brennan Jr, DDS is a medicare enrolled "Dentist" provider in Downers Grove, Illinois. His current practice location is 5133 Washington St, Suite 4, Downers Grove, Illinois. You can reach out to his office (for appointments etc.) via phone at (630) 969-4645.

Dr William Michael Brennan Jr is licensed to practice in Illinois (license number ) 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 1265501175.

Contact Information

Dr William Michael Brennan Jr, DDS
5133 Washington St, Suite 4,
Downers Grove, IL 60515-4788
(630) 969-4645
Not Available

Map and Direction




Healthcare Provider's Profile

Full NameDr William Michael Brennan Jr
GenderMale
SpecialityDentist
Location5133 Washington St, Downers Grove, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1265501175
  • Provider Enumeration Date: 11/06/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 1759602592
  • Enrollment ID: I20150605000872

Medical Identifiers

Medical identifiers for Dr William Michael Brennan Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1265501175NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
122300000XDentist (Illinois)Primary

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 Michael Brennan 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 Michael Brennan Jr, DDS
1516 S Wabash Ave, #602,
Chicago, IL 60605-2903

Ph: (312) 765-0097
Dr William Michael Brennan Jr, DDS
5133 Washington St, Suite 4,
Downers Grove, IL 60515-4788

Ph: (630) 969-4645

Reviews and Comments


Dentist in Downers Grove, IL

Dr. Samar Islam, DDS
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Phone: 630-964-7852    
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Phone: 630-963-6750    Fax: 630-963-6761
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Phone: 630-743-4967    

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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