How to check an oncologist's credentials

When people say they want to "check a doctor's credentials," they are usually asking two questions at once. One is whether this person is allowed to practice medicine at all. The other is whether they have been formally recognized in the specialty that matters for your care.

Those are separate records kept by separate bodies. The first is a state medical license. The second is board certification. Both are public. Both are free to look up. Neither takes long.

The American Board of Medical Specialties, usually shortened to ABMS, is an umbrella organization made up of 24 member boards. Each board sets standards for its own specialty.

ABMS describes certification as an independent evaluation of a physician's or specialist's knowledge and skills to practice safely and effectively in a specialty. The word independent is doing real work there. The evaluation does not come from the hospital that employs the doctor, and it is not the same thing as a medical school diploma.

Across those 24 boards, the system covers 38 specialties and 89 subspecialties. Certification is voluntary. A doctor can practice legally without it.

ABMS also lists six areas that certification looks at, co-developed with the Accreditation Council for Graduate Medical Education: patient care, medical knowledge, practice-based learning, systems-based practice, communication, and professionalism.

One more thing worth knowing. ABMS describes certification as a structured process for doctors to stay up to date after medical school and initial specialty training. So a current certification is a statement about now, not only about a test passed years ago.

ABMS points patients to a separate site built for this purpose: certificationmatters.org. It is free, and you do not need to create an account.

The search asks for a few things:

• At least two letters of the doctor's last name
• First name, which is optional
• State
• Specialty

If the name is common, adding the first name and the right state narrows things quickly. If you are not sure which specialty to pick, that is a fine question to ask the office when you call.

Licensing happens at the state level, not the national level. Each state medical board keeps its own public lookup, and each one looks a little different. Search for the medical board in the state where the doctor practices, then use that board's own verification page.

A license lookup generally confirms that a license exists and whether it is active. What else appears varies by state, which is exactly why it is worth reading that state board's own page rather than assuming.

Quite a lot, honestly, for ten minutes of effort.

They confirm you are dealing with a licensed physician. They confirm whether that physician has been recognized in a relevant specialty, and whether that recognition is current. They help you notice when the specialty on paper does not match the conversation you are having, which is a reasonable thing to raise politely.

They also give you a small amount of footing. Being newly diagnosed is disorienting, and most of the decisions in front of you require information you do not have yet. This is one of the few things you can settle on your own, quickly, from a phone.

They cannot tell you whether a doctor is good with people, explains things clearly, or returns calls.

They cannot tell you how often a practice treats your particular cancer, which is often the more useful question and is not in any credential database.

They cannot tell you about a hospital's results, its nurse staffing, or how long you will wait for a scan. They cannot tell you whether a trial you might qualify for is open nearby.

And a missing entry is not proof of anything. Records lag. Names change with marriage or transliteration. Some respected doctors hold certification from boards outside the ABMS system entirely. The right response to a blank result is a phone call to the office, not a conclusion.

Credentials are a floor, not a ranking. Once two doctors both clear that floor, the checks stop being able to help you choose between them, and the questions that matter become different ones: how much experience this team has with your situation, whether they discuss cases as a group, how they handle second opinions, and whether you can reach a human being on a bad afternoon.

Details on any of these sites can change. Before you rely on what you find, look at the current pages themselves rather than a summary of them.