An anesthesiologist is someone who anesthetizes patients. They can help sedate patients and put them under for surgeries or other medical procedures. They help prepare their patients for procedures and make sure they are not experiencing any pain or fear associated with the treatment or procedure they are undergoing. They work closely with other doctors, surgeons, and specialists to ensure that patients are being treated properly.

Critical care is provided for patients who are suffering from life-threatening conditions. The doctors who work with these people are often called intensivists. They focus on a range of different issues, so they can serve people who need immediate and life-saving care. Since people who need critical care are suffering from such a wide variety of issues, intensivists must have a thorough understanding of diverse types of medical issues and the devices and medications needed to treat them.

An internist or Internal Medicine doctor is someone who specializes in diagnosing and treating illnesses, diseases, and health problems. Most internists are also primary care doctors and treat patients on a regular basis. They can diagnose and treat common illnesses or more serious problems. Most people see an internist regularly. Those with chronic illnesses may do so on a monthly or even weekly basis. Internists are the most common types of doctors.

The subspecialty of interventional pain management aims to help patients who are suffering from all types of pain by using invasive interventions. This may include anything from nerve blocks to implantable drug delivery systems to spinal cord stimulation. This kind of treatment is often helpful for patients who have long-lasting pain that cannot be easily managed with medication or other means of pain management. Therefore, these treatments are usually reserved for those with serious pain problems.