Hematologist.
Hematologist - A Doctor Who specializes in diagnosing and treating bone and blood disorders.
Hematologist
A blood doctor is a hematologist, usually someone is both a hematologist and an oncologist (cancer doctor)
A gastroenterologist studies disorders of the stomach and digestive tract.
Podiatrist
A Pulmonologist is a doctor that specializes in the respiratory system. A Respiratory Therapists evaluate, treat, and care for patients with breathing or other cardiopulmonary disorders but does not have to be an MD.
Neurologist
Another common term for a doctor is a physician. Or you could name them by the particular specialty they are in. For instance, a cardiologist is a doctor that specializes in the heart, a pediatrician is a doctor who specializes in children, etc.
what is the name of the kind of doctor who specializes in eye disease,i.e. macular degeneration?
Osteopathologist or osteopathic physician. A doctor who specializes in orthopedic medicine treats the human musculoskeletal system including the spine. However, other specialists treat spinal disorders. See related link.
A physician who specializes in disorders of the skin is known as a dermatologist.
OB/GYN then paediatricians