Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Brett Brunner Williams, MD

Individual provider Infectious Disease Physician · NPI 1447426606

Dr. Brett Brunner Williams, MD is an Infectious Disease in Boston, Massachusetts. Graduated from Toledo Medical College in 2008, 18 years ago. Practices with Rush University Medical Group, a 1,499-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
18
Trained at
Toledo Medical College
Licensed in
IL
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1 Deaconess Rd Deaconess 306
Boston, MA 02215-5321
Phone: (419) 902-6222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 036-127789 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036.127789 (IL)

Record details

NPI number1447426606
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 7, 2008
Last updated in NPPESMay 4, 2021
Certification dateMay 4, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolTOLEDO MEDICAL COLLEGE
Graduated 2008 (18 years in practice)
Group practice Rush University Medical Group — 1499 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

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