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

Dr. Keith William Brennan, MD

Individual provider Internal Medicine Physician · NPI 1659668580

Dr. Keith William Brennan, MD is an Internal Medicine in Providence, Rhode Island. Qualified in 2011, 15 years ago. Practices with Mount Sinai School of Medicine, a 151-clinician group and accepts Medicare assignment. Licensed in Rhode Island.

Years since qualifying
15
Licensed in
RI
In the registry since
2011
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

825 Chalkstone Ave
Providence, RI 02908-4728
Phone: (401) 456-2145
Fax: (401) 456-6809
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence LP02331 (RI)

Record details

NPI number1659668580
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 29, 2011
Last updated in NPPESJune 29, 2011
Mailing address825 Chalkstone Ave, Providence, RI 02908-4728

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Mount Sinai School Of Medicine — 151 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Providence