Doctors in the United States are regulated primarily by state medical boards, which have the legal authority to grant, suspend, and revoke medical licenses. But state boards are just one layer. Federal agencies, hospitals, certification organizations, and insurance programs all play distinct roles in overseeing how doctors practice, what they can prescribe, and whether they meet quality standards.
State Medical Boards: The Primary Regulators
In the United States, medicine is a licensed profession regulated by individual states. Each state has its own medical board (and in some cases a separate osteopathic board) that decides who is qualified to practice medicine within its borders. There are 70 state medical and osteopathic regulatory boards across the U.S., its territories, and the District of Columbia.
State medical boards issue licenses, investigate complaints, and take disciplinary action when a doctor violates the state’s medical practice act. That disciplinary action can range from a formal reprimand to permanent revocation of a license. Importantly, a state license covers the general, undifferentiated practice of medicine. States do not license doctors based on their specialty. A licensed physician is legally permitted to practice any type of medicine, though practical constraints like hospital privileges typically keep doctors within their trained specialty.
Each board operates under its own state laws. The Georgia Composite Medical Board, for example, follows the state’s Medical Practice Act, the Patient Right to Know Act, and specific sections of the Official Code of Georgia. Every state has its own version of these statutes, which means the specific rules governing doctors can vary from one state to another.
How to File a Complaint Against a Doctor
Anyone can file a complaint with their state medical board. You don’t need to be the patient involved. In Texas, for instance, complaints must be submitted in writing, either by mail or through the board’s website. After an initial review to confirm the board has jurisdiction, you’ll receive a status letter within about 45 days. If the board opens a formal investigation, it assigns a trained investigator and aims to resolve the case within 180 days, though complex cases can take longer. You’ll get updates roughly every 90 days.
One detail that surprises many people: you can request confidentiality, but you cannot file anonymously. The board needs to be able to identify and contact you about your complaint.
The Federation of State Medical Boards
The Federation of State Medical Boards (FSMB) doesn’t regulate doctors directly. Founded in 1912, it serves as a coordinating body for all 70 state boards, helping them share best practices and standardize their approaches to licensing and discipline. The FSMB operates a Physician Data Center and a Federation Credentials Verification Service that boards use to confirm a doctor’s training, exam history, and licensure across states. Think of the FSMB as the connective tissue between individual state boards, not a regulator itself.
Federal Agencies That Oversee Doctors
Two federal agencies have significant regulatory power over physicians, though neither one issues medical licenses.
The Drug Enforcement Administration (DEA) controls which doctors can prescribe controlled substances like opioids, stimulants, and certain sedatives. Every physician who wants to prescribe these medications must register with the DEA and maintain an active registration. The DEA can revoke that registration independently of the state medical board, effectively stripping a doctor’s ability to prescribe controlled substances even if the state license remains active.
The Centers for Medicare and Medicaid Services (CMS) regulates doctors through the financial side of healthcare. Physicians who participate in Medicare or Medicaid must follow federal billing rules, coding standards, and increasingly, quality reporting requirements. CMS runs value-based programs that tie a portion of physician payment to measurable outcomes, and it maintains a public physician comparison initiative. Doctors who submit fraudulent claims or fail to meet program requirements can be excluded from federal healthcare programs, which for many practices would be financially devastating.
The National Practitioner Data Bank
Behind the scenes, a federal database tracks problem doctors across state lines. The National Practitioner Data Bank (NPDB), run by the Health Resources and Services Administration, collects reports on malpractice payments, adverse licensing actions, loss of hospital privileges, professional society actions, and DEA enforcement. It also records Medicare and Medicaid exclusions.
The database has been collecting reports since September 1990. It’s updated quarterly and is used by hospitals, state boards, and other authorized entities when they’re evaluating a physician’s background. The general public cannot look up individual doctors in the NPDB. Federal law specifically prohibits releasing data that could identify a particular practitioner, so the publicly available version of the database is stripped of identifying information.
Hospital Credentialing and Privileges
Hospitals add another layer of oversight that many patients don’t realize exists. Before a doctor can treat patients at a hospital, that hospital must independently verify credentials and grant specific privileges. This process is governed by standards set by The Joint Commission, the organization that accredits most U.S. hospitals.
Privileges are granular. A hospital doesn’t just approve a doctor to “practice medicine” there. It grants permission for specific activities: writing medication orders, performing surgical procedures, inserting central lines, interpreting tests. Hospitals also conduct ongoing professional practice evaluations to monitor whether a doctor continues to meet performance standards. A doctor who loses hospital privileges faces a report to the NPDB, which can trigger scrutiny from other hospitals and state boards.
Board Certification: Voluntary but Influential
Specialty certification through the American Board of Medical Specialties (ABMS) or the American Osteopathic Association’s Bureau of Osteopathic Specialists is not legally required to practice medicine. A licensed physician can technically practice any specialty. In reality, though, most physicians pursue board certification because hospitals typically require it for privileges, and many insurance networks require it for participation. The majority of practicing physicians in the U.S. hold specialty certification.
Board certification involves passing rigorous specialty exams and, for most specialties, completing periodic recertification. It signals that a physician has met a national standard of knowledge in their field, but it’s an overlay on top of the state license, not a replacement for it. Losing board certification doesn’t revoke a doctor’s license, but it can effectively end their ability to practice at hospitals or accept insurance patients in their specialty.
How These Layers Work Together
No single entity has complete authority over a doctor’s career. A physician needs a state license to practice, DEA registration to prescribe controlled substances, hospital privileges to treat patients in a facility, CMS enrollment to bill federal insurance programs, and board certification to remain competitive. Each of these gatekeepers can act independently. A state board might suspend a license based on patient complaints while the DEA simultaneously investigates prescribing patterns. A hospital might revoke privileges based on its own quality review, triggering a report to the NPDB that follows the doctor to every future credentialing application.
This layered system means that a doctor who loses standing with one regulator often faces a cascade of consequences from others. It also means that if one layer fails to catch a problem, another may pick it up. The tradeoff is complexity: patients sometimes struggle to figure out which body to contact when something goes wrong. The answer, in almost every case, is to start with your state medical board.