Dr Brett Brunner Williams, MD - Medicare Infectious Disease in Boston, MA

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Dr Brett Brunner Williams, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Boston, Massachusetts. He went to Toledo Medical College and graduated in 2008 and has 16 years of diverse experience with area of expertise as Infectious Disease. He is a member of the group practice Cook County, Northwestern Medical Faculty Foundation, Rush University Medical Center and his current practice location is 1 Deaconess Rd, Deaconess 306, Boston, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (419) 902-6222.

Dr Brett Brunner Williams is licensed to practice in Illinois (license number 036-127789) 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 1447426606.

Contact Information

Dr Brett Brunner Williams, MD
1 Deaconess Rd, Deaconess 306,
Boston, MA 02215-5321
(419) 902-6222
Not Available

Map and Direction




Physician's Profile

Full NameDr Brett Brunner Williams
GenderMale
SpecialityInfectious Disease
Experience16 Years
Location1 Deaconess Rd, Boston, Massachusetts
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 Brett Brunner Williams attended and graduated from Toledo Medical College in 2008
  NPI Data:
  • NPI Number: 1447426606
  • Provider Enumeration Date: 05/07/2008
  • Last Update Date: 05/04/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 5991976235
  • Enrollment ID: I20110919000485

Medical Identifiers

Medical identifiers for Dr Brett Brunner Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1447426606NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease 036-127789 (Illinois)Primary
207R00000XInternal Medicine 036.127789 (Illinois)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Rush University Medical CenterChicago, ILHospital
Northwestern Lake Forest HospitalLake forest, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Cook County2860398088619
Northwestern Medical Faculty Foundation45875768143255
Rush University Medical Center54966588741007

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 Brett Brunner Williams allows following entities to bill medicare on his behalf.
Entity NameNorthwestern Medical Faculty Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346235314
PECOS PAC ID: 4587576814
Enrollment ID: O20031105000541
Entity NameCook County
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588612832
PECOS PAC ID: 2860398088
Enrollment ID: O20031209000747
Entity NameRush University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093819542
PECOS PAC ID: 5496658874
Enrollment ID: O20040202000228
Entity NameRush University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1518196138
PECOS PAC ID: 8628114956
Enrollment ID: O20090930000174

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 Brett Brunner 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
Dr Brett Brunner Williams, MD
1 Deaconess Rd, Deaconess 306,
Boston, MA 02215-5321

Ph: (419) 902-6222		Dr Brett Brunner Williams, MD
1 Deaconess Rd, Deaconess 306,
Boston, MA 02215-5321

Ph: (419) 902-6222

Reviews and Comments


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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.

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