Dr. Drennan's Experience
Research training, expertise and qualifications
Dr. Drennan's Care Philosophy
- Gastroenterology, 1987
- Internal Medicine, 1985
Procedures Dr. Drennan Performs
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Conditions Dr. Drennan Treats
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Background Check for Dr. Drennan
Awards & Recognitions
Education & Training
Languages Spoken by Dr. Drennan & Staff