of
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Christopher Brennan, MD

Dr. Brennan is an internal medicine doctor in the West Islip area. He is affiliated with St Francis Hospital and 3 more hospitals.
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Conditions treated

Tap to see more details about our calculations for each condition.

Top 25%
2.5k doctors
Top 15%
2.5k doctors
Top 5%
1.3k doctors
Dr. Brennan saw cardiovascular disease (CVD) patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
2.4k doctors
Top 15%
2.4k doctors
Top 5%
1.2k doctors
Dr. Brennan saw vascular disease patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
2.7k doctors
Top 15%
2.7k doctors
Top 5%
1.3k doctors
Dr. Brennan saw pain patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
159 doctors
Top 15%
160 doctors
Top 5%
79 doctors
Dr. Brennan saw more alcohol withdrawal patients than 75% of similar doctors in the NYC area in 2014–2018. Learn more.
Top 25%
669 doctors
Top 15%
669 doctors
Top 5%
334 doctors
Dr. Brennan saw more sepsis patients than 85% of similar doctors in the NYC area in 2014–2018. Learn more.
Top 25%
1.6k doctors
Top 15%
1.6k doctors
Top 5%
815 doctors
Dr. Brennan saw heart disease patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
217 doctors
Top 15%
217 doctors
Top 5%
108 doctors
Dr. Brennan saw angina patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
830 doctors
Top 15%
830 doctors
Top 5%
414 doctors
Dr. Brennan saw shortness of breath patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
2.3k doctors
Top 15%
2.3k doctors
Top 5%
1.1k doctors
Dr. Brennan saw digestive tract conditions patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
2.3k doctors
Top 15%
2.3k doctors
Top 5%
1.2k doctors
Dr. Brennan saw diabetes patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
2.0k doctors
Top 15%
2.0k doctors
Top 5%
1.0k doctors
Dr. Brennan saw type 2 diabetes patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
700 doctors
Top 15%
700 doctors
Top 5%
350 doctors
Dr. Brennan saw acute renal failure patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
809 doctors
Top 15%
809 doctors
Top 5%
404 doctors
Dr. Brennan saw more kidney failure patients than 75% of similar doctors in the NYC area in 2014–2018. Learn more.
Top 25%
2.0k doctors
Top 15%
2.0k doctors
Top 5%
976 doctors
Dr. Brennan saw more anemia patients than 75% of similar doctors in the NYC area in 2014–2018. Learn more.
Top 25%
257 doctors
Top 15%
257 doctors
Top 5%
128 doctors
Dr. Brennan saw alcoholism patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
1.0k doctors
Top 15%
1.0k doctors
Top 5%
524 doctors
Dr. Brennan saw more hemorrhage patients than 75% of similar doctors in the NYC area in 2014–2018. Learn more.
Top 25%
364 doctors
Top 15%
364 doctors
Top 5%
181 doctors
Dr. Brennan saw drug abuse patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
136 doctors
Top 15%
136 doctors
Top 5%
67 doctors
Dr. Brennan saw diabetic ketoacidosis (DKA) patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
2.0k doctors
Top 15%
2.0k doctors
Top 5%
998 doctors
Dr. Brennan saw lung condition patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
1.5k doctors
Top 15%
1.5k doctors
Top 5%
756 doctors
Dr. Brennan saw high cholesterol patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
1.2k doctors
Top 15%
1.2k doctors
Top 5%
583 doctors
Dr. Brennan saw coronary artery disease (CAD) patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
292 doctors
Top 15%
292 doctors
Top 5%
146 doctors
Dr. Brennan saw opiate dependence patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
1.0k doctors
Top 15%
1.0k doctors
Top 5%
508 doctors
Dr. Brennan saw abnormal breathing patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
1.2k doctors
Top 15%
1.2k doctors
Top 5%
597 doctors
Dr. Brennan saw more cellulitis patients than 75% of similar doctors in the NYC area in 2014–2018. Learn more.
Top 25%
1.1k doctors
Top 15%
1.1k doctors
Top 5%
530 doctors
Dr. Brennan saw atrial fibrillation (Afib) patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
1.1k doctors
Top 15%
1.1k doctors
Top 5%
570 doctors
Dr. Brennan saw pneumonia patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
334 doctors
Top 15%
333 doctors
Top 5%
166 doctors
Dr. Brennan saw pancreatitis patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
358 doctors
Top 15%
358 doctors
Top 5%
179 doctors
Dr. Brennan saw drug addiction patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
844 doctors
Top 15%
844 doctors
Top 5%
422 doctors
Dr. Brennan saw fainting patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Top 25%
1.1k doctors
Top 15%
1.1k doctors
Top 5%
546 doctors
Dr. Brennan saw chronic kidney disease patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the NYC area. Learn more.
Locations

Dr. Brennan sees patients and can be reached at the following location.

Good Samaritan Hospital Medical Center
1000 Montauk Hwy
West Islip, NY 11795
1,466 miles away

Reviews

Credentials
  • Ross University School of Medicine
    MEDICAL EDUCATION, 2007

Hospital affiliations

Dr. Brennan is able to admit and treat patients at the following hospitals.

  • St Francis Hospital
    A
    Hospital safety grade (Spring 2019)
  • Good Samaritan Hospital Medical Center
    B
    Hospital safety grade (Spring 2019)
  • North Shore University Hospital
    B
    Hospital safety grade (Spring 2019)
  • North Shore University Hospital at Syosset
    C
    Hospital safety grade (Spring 2019)

Insurance accepted

Always check coverage with your doctor’s office.

  • Aetna
  • Affinity Health Plan
  • Anthem
  • Assurant Health
  • AvMed
  • Avera
  • Beacon Health Strategies
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross and Blue Shield of Florida
  • Blue Cross and Blue Shield of Rhode Island
  • Capital District Physicians Health Plan
  • CareFirst BlueCross BlueShield
  • Cigna
  • CoreSource
  • Coventry Health Care
  • EmblemHealth
  • Fallon Health
  • First Choice Health
  • Geisinger Health Plan
  • Harvard Pilgrim Health Care
  • Health First
  • HealthCare Partners
  • HealthNow New York
  • Highmark Blue Cross Blue Shield
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
  • Independence Blue Cross AmeriHealth
  • Independent Health
  • Lifetime Healthcare
  • MVP Health Care
  • Magellan Health
  • MagnaCare
  • Medica
  • Medical Mutual of Ohio
  • Medicare
  • Meritain Health
  • MultiPlan
  • Neighborhood Health Plan
  • PacificSource
  • Pomco
  • PreferredOne
  • Providence Health Plan
  • TRICARE
  • The Health Plan
  • Tufts Health Plan
  • UPMC Health Plan
  • United Healthcare
  • ValueOptions
  • Wellmark Blue Cross and Blue Shield