Cardiologists practice Cardiology a branch of medicine dealing with disorders of the heart and blood vessels. 

A cardiologist is a physician who is certified to treat problems of the cardiovascular system—the heart, arteries, and veins. Cardiology is classified as an internal medicine subspecialty.

Dermatologists practice dermatology a branch of medicine dealing with the skin, its structure, functions, and diseases. A dermatologist takes care of diseases, in the widest sense, and some cosmetic problems of the skin, scalp, hair, and nails.

Dermatology is the branch of medicine dealing with the skin and its diseases a unique specialty with both medical and surgical aspects.

An ear, nose and throat specialist (ENT) is a physician trained in the medical and surgical treatment of the ears, nose throat, and related structures of the head and neck.

They have special expertise in managing diseases of the ears, nose and nasal passage sinuses, larynx (voice box), oral cavity and upper pharynx (mouth and throat), as well as structures of the neck and face.

The Ear

The unique domain of the ear; nose and throat specialist is treatment of ear disorders. This includes medical and surgical treatment for hearing disorders, ear infections, balance disorders, facial nerve or cranial nerve disorders, as well as management of congenital (birth) and cancerous disorders of the outer and inner ear

The Nose

Care of the nasal cavity and sinuses is one of the primary skills of the ENT specialist. Management of disorders of the nasal cavity, paranasal sinuses, allergies, sense of smell, and nasal respiration (breathing), as well as the external appearance of the nose are part of an. ENT's area of expertise.

The Throat

Also specific to the ENT specialty is expertise in managing diseases of the larynx (voice box) and the upper aerodigestive tract or esophagus including disorders of the voice respiration (breathing), and swallowing.

The Head and Neck

In the head and neck area, an ENT specialist is trained to treat infectious diseases, tumors (both benign and malignant/cancerous), facial trauma, and deformities of the face. They perform both cosmetic plastic and reconstructive surgery.

Gynaecology is the medical practice dealing with the health of the Female reproductive system (uterus, vagina and ovaries). Literally, outside medicine, it means "the science of women".

Gynaecology is typically considered a consultant specialty. A gynaecologist may employ medical or surgical therapies (or many times, both), depending on the exact nature of the problem that they are treating.

A neurologist is a medical doctor who has been trained in the diagnosis and treatment of nervous system disorders, including diseases of the brain, spinal cord, nerves, and muscles.

Neurologists perform neurological examinations of the nerves of the head and neck; muscle strength and movement; balance, ambulation, and reflexes; and sensation, memory, speech, language, and other cognitive abilities.

They also perform diagnostic tests such as the following:

• CAT (computed axial tomography) scan
• MRI/MRA (magnetic resonance imaging/magnetic resonance angiography)
• lumbar puncture (spinal tap)
• EEG (electroencephalography)
• EMG/NCV (electromyography/nerve conduction velocity)

Nephrologists are physicians whose speciality is nephrology. Nephrologist a doctor who treats patients with kidney problems. Nephrology practitioners (Nephrologists) also manage the care of patients on dialysis.

 Nephrology is a subspecialty of internal medicine. A nephrologist is a physician who has been educated and trained in kidney diseases, kidney transplantation, and dialysis therapy. Nephrologists are physicians who has been trained in the diagnosis and management of kidney disease, by regulating blood pressure, regulating electrolytes, balancing fluids in the body, and administering dialysis. Nephrologists treat many different kidney disorders including acid-base disorders, electrolyte disorders, nephrolithiasis (kidney stones), hypertension (high blood pressure), acute kidney disease and end-stage renal disease.

Neonatologists are the doctors who practice neonatology.Neonatology is a subspecialty of pediatrics that consists of the medical care of newborn infants, especially the ill or premature newborn infant.

 It is a hospital-based specialty, and is usually practiced in neonatal intensive care units (NICUs). The principal patients of neonatoplogists are new born infants who are ill or requiring special medical care due to prematurity , low birth weight,intra uterine growth retardation etc.

Orthopedic surgery or orthopedics is the branch of surgery concerned with conditions involving the muscoskeletal system Orthopedic surgeons use both surgical and nonsurgical means to treat muscoskeletal trauma, sports injuries, degenerative diseases,infections & tumors.

Orthopedics is the study of the musculoskeletal system. Orthopedic doctors help patients with the diagnosis of problems associated with the bone, joints, ligaments, tendons, muscles, and nerves of the body. Orthopedics is one of many medical specialties.

Joint replacement surgery replaces or resurfaces the bones in a damaged joint to create new joint surfaces.The most common types of joint replacement surgery are -

* Knee replacement
* Shoulder replacement
* Hip Replacement

Oncologists are physicians who study, diagnose, and treat cancerous tumors.

There are several oncology specialties and
subspecialties:

Gynecological oncology:
Medical oncology:
Medical oncology and hematology:
Pediatric oncology and hematology:
Radiation oncology:
Surgical oncology:

An ophthalmologist is a physician who specializes in the medical and surgical care of the eyes and visual system and in the prevention of eye disease and injury.

They provide a full spectrum of eye care including routine eye exams, diagnosis and medical treatment of eye disorders and diseases, prescriptions for eyeglasses, surgery, and management of eye problems that are caused by systemic illnesses. Ophthalmologists can be medical doctors (M.D.) or doctors of osteopathy (D.O.).

A psychiatrist is a physician who specializes in psychiatry and is certified in treating mental disorders.

All psychiatrists are trained in diagnostic evaluation and in psychotherapy. As part of their evaluation of the patient, psychiatrists are one of the few mental health professionals who may prescribe psychiatric medication conduct physical examinations, order and interpret laboratory tests and ECG and may order brain imaging studies such as computed tomographyor computed axial tomography (CT/CAT Scan), & MRI.

A radiologist is a physician who has specialized training in obtaining and interpreting medical images, which makes him or her an imaging expert.

 These images are obtained by using x-rays (radiographs, CT, Fluoroscopy), or radioactive substances (nuclear medicine), others by means of sound waves (Ultrasound) or the body's natural magnetism (MRI).