It is not possible to determine a single best doctor in Bangladesh, as there are many qualified and experienced doctors across the country in various medical specialties. However, here are some notable doctors in Bangladesh:
1. Prof. Dr. Abul Kalam Azad: a renowned cardiac surgeon and director of the National Institute of Cardiovascular Diseases (NICVD) in Dhaka.
2. Prof. Dr. Rashid-E-Mahbub: a leading orthopedic surgeon and founder of the Bangladesh Association of Sports Medicine.
3. Prof. Dr. Quazi Tarikul Islam: a prominent neurosurgeon and former head of the Neurosurgery Department at Bangabandhu Sheikh Mujib Medical University (BSMMU).
4. Dr. Samir Kumar Saha: a microbiologist and executive director of the Child Health Research Foundation (CHRF), known for his research on vaccine-preventable diseases.
5. Dr. A.K.M. Fazlur Rahman: a leading gastroenterologist and founder of the Bangladesh Gastroenterology Society.
6. Dr. Khondkar Ibrahim Khaled: a well-known cardiologist and former president of the Bangladesh Medical Association (BMA).
7. Dr. M.A. Azhar: a renowned neurologist and professor at the National Institute of Neurosciences and Hospital (NINS) in Dhaka.
8. Dr. Hafizur Rahman Chowdhury: a respected oncologist and founder of the Bangladesh Cancer Society.
9. Dr. M.A. Kashem: a leading endocrinologist and former president of the Endocrine Society of Bangladesh.
10. Dr. Mohammad Zahid Hossain: a prominent ophthalmologist and chairman of the Department of Ophthalmology at Bangabandhu Sheikh Mujib Medical University (BSMMU).
These are just a few of the many talented and experienced doctors in Bangladesh who have made significant contributions to their respective medical fields. When seeking medical treatment in Bangladesh, it is important to do research and consult with a trusted medical professional to find the best doctor for your specific needs.