Margaret-mary Williams, MD - Medicare Internal Medicine in Brockton, MA

Margaret-mary Williams, MD is a medicare enrolled "Internal Medicine" physician in Brockton, Massachusetts. She went to Albany Medical College Of Union University and graduated in 1987 and has 37 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Steward Medical Group Inc and her current practice location is 1 Pearl St, Suite 1400, Brockton, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (508) 897-6200.

Margaret-mary Williams is licensed to practice in Massachusetts (license number 71259) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1992792055.

Contact Information

Margaret-mary Williams, MD
1 Pearl St, Suite 1400,
Brockton, MA 02301-2864
(508) 897-6200
(508) 897-6321

Map and Direction




Physician's Profile

Full NameMargaret-mary Williams
GenderFemale
SpecialityInternal Medicine
Experience37 Years
Location1 Pearl St, Brockton, Massachusetts
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Margaret-mary Williams attended and graduated from Albany Medical College Of Union University in 1987
  NPI Data:
  • NPI Number: 1992792055
  • Provider Enumeration Date: 10/04/2005
  • Last Update Date: 01/21/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 6305884024
  • Enrollment ID: I20050421001410

Medical Identifiers

Medical identifiers for Margaret-mary Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1992792055NPI-NPPES
3074749MedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 71259 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Good Samaritan Medical CenterBrockton, MAHospital
Morton HospitalTaunton, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Steward Medical Group Inc28606887281338

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. Margaret-mary Williams allows following entities to bill medicare on her behalf.
Entity NameSteward Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629398219
PECOS PAC ID: 2860688728
Enrollment ID: O20101119000007
Entity NameSteward Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629398219
PECOS PAC ID: 2860688728
Enrollment ID: O20101119000332

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. Margaret-mary Williams 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
Margaret-mary Williams, MD
1 Pearl St, Suite 1400,
Brockton, MA 02301-2864

Ph: (508) 897-6200
Margaret-mary Williams, MD
1 Pearl St, Suite 1400,
Brockton, MA 02301-2864

Ph: (508) 897-6200

Reviews and Comments


Internal Medicine Doctors in Brockton, MA

Louis D. Gottlieb, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 680 Centre St, Managed Care, Brockton, MA 02302
Phone: 508-941-7065    Fax: 508-941-6373
Gloria Ibarra, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 63 Main St, Brockton, MA 02301
Phone: 508-559-6699    Fax: 508-559-5073
Elsie Varughese, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 63 Main St, Brockton, MA 02301
Phone: 508-559-6699    Fax: 508-583-4649
Jane G Butlin, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1 Pearl St, Suite 2200, Brockton, MA 02301
Phone: 508-897-6051    Fax: 508-897-6096
Jacob Mandell, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 680 Centre St, Brockton Hospital, Brockton, MA 02302
Phone: 508-941-7150    
Jolly Abeskheron, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1 Pearl St, Suite 1000, Brockton, MA 02301
Phone: 508-897-6060    Fax: 508-897-6063
Xin He,
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 110 Liberty St, Brockton, MA 02301
Phone: 508-894-0400    

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.