Dr William A Brennan Jr, MD - Medicare Psychiatry & Neurology in Westbrook, ME

Dr William A Brennan Jr, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Westbrook, Maine. His current practice location is 123 Andover Rd, Westbrook, Maine. You can reach out to his office (for appointments etc.) via phone at (207) 761-2200.

Dr William A Brennan Jr is licensed to practice in Maine (license number MD15334) 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 1700861028.

Contact Information

Dr William A Brennan Jr, MD
123 Andover Rd,
Westbrook, ME 04092-3848
(207) 761-2200
(207) 761-2108

Map and Direction




Physician's Profile

Full NameDr William A Brennan Jr
GenderMale
SpecialityPsychiatry & Neurology - Psychiatry
Location123 Andover Rd, Westbrook, Maine
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1700861028
  • Provider Enumeration Date: 12/09/2005
  • Last Update Date: 10/14/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 5092747212
  • Enrollment ID: I20050908000258

Medical Identifiers

Medical identifiers for Dr William A Brennan Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1700861028NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry MD15334 (Maine)Primary

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 Brennan Jr allows following entities to bill medicare on his behalf.
Entity NameMainehealth
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790265502
PECOS PAC ID: 7517860588
Enrollment ID: O20040701000166

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 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 A Brennan Jr, MD
15 Newell Ridge Rd,
Cumberland, ME 04021-3915

Ph: (207) 829-2054
Dr William A Brennan Jr, MD
123 Andover Rd,
Westbrook, ME 04092-3848

Ph: (207) 761-2200

Reviews and Comments


Psychiatry & Neurology Doctors in Westbrook, ME

Sally A. Cooper, MD
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 123 Andover Rd, Westbrook, ME 04092
Phone: 207-761-2200    Fax: 207-761-2108
David F Ray, MD
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 123 Andover Rd, Westbrook, ME 04092
Phone: 207-761-2200    Fax: 207-761-7773
Dr. Shannon Janice Ezovski, MD
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 123 Andover Rd, Westbrook, ME 04092
Phone: 207-761-2200    
Girard E Robinson, MD
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 123 Andover Rd, Westbrook, ME 04092
Phone: 207-761-2200    Fax: 207-842-7773
Dr. Gabriel E. Matos, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 123 Andover Rd, Westbrook, ME 04092
Phone: 207-761-2200    
Brendan P. Kirby, MD
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 123 Andover Rd, Westbrook, ME 04092
Phone: 207-761-2200    Fax: 207-761-2108
Mr. Juan C Mateo, PMHNP
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 123 Andover Rd, Westbrook, ME 04092
Phone: 207-761-2200    

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.