


Dr. Keith Brennan, MD
Dr. Keith Brennan, MD is an internist in Oceanside, NY. He is affiliated with Mount Sinai South Nassau.
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1 Healthy Way Oceanside, NY 11572Compare Dr. Keith Brennan, MD with other Internists near you
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About Me
biography
Dr. Keith Brennan, MD is an internist in Oceanside, NY. He is affiliated with Mount Sinai South Nassau.Internal Medicine
*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Winthrop - University Hospital
Fellowship Hospital, 2015Roger Williams Medical Center
Residency Hospital, 2014
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Affiliated Hospitals
- Recipient of 8
hospital awardsView all awardsSurgical Care Excellence Award™ (2023)
Superior clinical outcomes in surgical care across 15 of the most common in-hospital surgical procedures including cardiac, vascular, joint replacement, prostate, spine, and gastrointestinal surgeries
View all patient feedbackHow patients felt about the care they received at this hospital.
77%Patients said they were given information about recovering at home7% lower than the national average
71%Patients said that doctors always listened to them and explained things well5% lower than the national average