Dr. Mohammad Zakaria Mahmud (ডা. মো. জাকারিয়া মাহমুদ) is a Respiratory and Thoracic Medicine specialist with a broad practice spanning chest disease, tuberculosis, diabetes, hypertension, and internal medicine. He holds MBBS, BCS (Health), DTCD (Diploma in Tuberculosis and Chest Diseases) from the University of Dhaka, and CCD (Certificate Course in Diabetology) from BIRDEM General Hospital — one of Bangladesh's leading diabetes-focused institutions. His career includes academic and clinical roles as Assistant Professor of Respiratory Medicine at Sylhet MAG Osmani Medical College & Hospital and as Associate Professor of Respiratory Medicine at the National Institute of Diseases of the Chest and Hospital, giving him deep, specialized training in chest and respiratory disease alongside his broader internal medicine expertise in diabetes and hypertension. Dr. Mahmud consults patients at three locations: Labaid Limited (Diagnostics), Narsingdi, Comfort Medical Services, Sylhet, and Al Haramain Hospital, Sylhet, making specialized respiratory, chest, TB, and internal medicine care accessible to patients across both Narsingdi and Sylhet.