1. Doctor of heart = Cardiologist
2. Doctor of skin = Dermatologist
3. Doctor of brain = Neurologist
4. Doctor of eyes = Ophthalmologist
5. Doctor of bones = Orthopedic
6. Doctor of children = Pediatrician
7. Doctor of teeth = Dentist
8. Doctor of lungs = Pulmonologist
9. Doctor of stomach = Gastroenterologist
10. Doctor of kidneys = Nephrologist
11. Doctor of hormones = Endocrinologist
12. Doctor of cancer = Oncologist
13. Doctor of mental health = Psychiatrist
14. Doctor of pregnancy = Obstetrician
15. Doctor of women = Gynecologist
16. Doctor of ear, nose, throat = ENT Specialist
17. Doctor of urine system = Urologist
18. Doctor of blood = Hematologist
19. Doctor of infections = Infectious Disease Specialist
20. Doctor of joints & arthritis = Rheumatologist