Here is a business model that exists. You pay a fee. In return, an organization with an official-sounding name declares your school accredited, publishes a certificate, never visits your campus, never interviews a student, and never asks you to do it again.
The Council for Higher Education Accreditation, a nonprofit that reviews accrediting organizations in the United States, calls operations like that accreditation mills, or “dubious providers of accreditation and quality assurance.” Its warning list is specific: status that can be bought, reviews that consist only of mailed-in documents, permanent accreditation with no periodic review, and a name built to resemble a real accreditor’s.
Which brings up the single most useful idea in this article. The word “accredited,” sitting on a website with no accreditor named next to it, is not information. It is decoration. The whole value of accreditation lives in the answer to a follow-up question most people never ask: accredited by whom, and who says that body counts?
There is a second complication. Two completely different systems share the word.
Two different machines, one word
Educational accreditation is quality review of schools and training programs. It decides whether a chiropractic college, a nursing program, or a pharmacy school meets agreed standards, and it usually determines whether a graduate can even sit for a licensing exam.
Facility accreditation is quality review of places that deliver care. Hospitals, surgery centers, dialysis units, hospices, home health agencies, and laboratories all get inspected, and in American health care that inspection is tied directly to whether Medicare will pay.
They share a word and almost nothing else. Different organizations run them, different rules govern them, and they answer different questions for you as a reader. A third use of the word, product certification and third-party testing of supplements, belongs to an entirely separate subject and should not be confused with either of these.
How school accreditation works
In the United States, nobody from the federal government inspects colleges. Private accrediting organizations do that, and the government’s role is one step removed: it decides which accreditors are credible.
The US Department of Education publishes a list of accrediting agencies that the Secretary of Education recognizes as “reliable authorities concerning the quality of education or training.” That recognition is the hinge the whole system turns on. An accreditor is not credible because it says so. It is credible because the Department of Education, the Council for Higher Education Accreditation, or both have reviewed it.
CHEA runs the second recognition track. On its own accreditation overview, CHEA explains that colleges and universities are accredited by one of 19 recognized institutional accrediting organizations, while individual programs are accredited by one of roughly 63 recognized programmatic accrediting organizations. Some accreditors are recognized by CHEA, some by the Department of Education, and some by both.
That institutional versus programmatic split matters more than it sounds. A university can be institutionally accredited while a specific program inside it is not. The school’s accreditation does not travel down to every degree it offers.
The scale is bigger than most people picture. CHEA’s public directories cover more than 8,200 accredited institutions, more than 44,000 accredited programs, and profiles of more than 80 recognized US accreditors. A separate international directory lists over 550 quality assurance bodies in more than 170 countries.
Health professions have their own programmatic accreditors. The National Center for Complementary and Integrative Health points to two as examples: the Council on Chiropractic Education, which accredits chiropractic colleges, and the accrediting commission for acupuncture programs. Checking CHEA’s recognized accreditor chart shows how uneven the picture can be. The Council on Chiropractic Education appears as recognized by both CHEA and the Department of Education. The Accreditation Commission for Acupuncture and Herbal Medicine appears as recognized by the Department of Education only. Both are real. They just carry different recognitions, which is exactly the kind of detail a vague “accredited” claim hides.
Why this matters long after graduation
Picture a career counselor’s worst phone call. Someone finishes a four-year program, pays for all of it, and then learns that their state licensing board will not let them sit for the exam, because the program was not accredited by a recognized body.
That scenario is built into the rules. NCCIH’s review of credentialing requirements shows how tightly accreditation and licensure are wired together. A chiropractor cannot get licensed anywhere in the 50 states or the District of Columbia without a Doctor of Chiropractic degree earned at an accredited school, and state exams, national board exams, or both on top of that. The 17 states and DC that licensed naturopathic physicians as of NCCIH’s May 2018 review generally required graduation from an accredited four-year naturopathic school and a postdoctoral board exam.
Those counts come from a page NCCIH last updated in 2018, so treat them as a snapshot of how much the rules vary rather than today’s roster. The structural point holds regardless: in regulated health professions, an unaccredited program is often a dead end the student discovers at the worst possible moment. How licensure itself works, and how to verify one, is covered in a companion article.
For you as a patient, the practical reading is narrower. Accreditation of a practitioner’s school is one of several things a licensing board already checked before issuing the license. You usually do not need to re-verify it. Where it becomes your problem is in fields with weak or no licensing, where a school’s accreditation claim may be the only quality signal anyone is offering.
How accreditation mills imitate the real thing
CHEA publishes warning signs for both degree mills and accreditation mills. Rather than reciting its list, here is the same material sorted by the trick being played.
The money tell. If accredited status can be purchased, or a degree can be bought outright or granted purely on a résumé review, the transaction is the product.
The speed tell. Real review takes time. Accreditation granted in a very short window, or a degree earned in a few weeks with minimal requirements, is selling the certificate and skipping the work.
The paperwork-only tell. Legitimate accreditors send people. A review that consists of submitting documents, with no site visit and no interviews, is not a review. Permanent accreditation with no periodic look back is another version of the same shortcut.
The borrowed-name tell. Mills choose names that resemble well-known universities or recognized accrediting bodies. They also claim recognition by the Department of Education or CHEA when they have none, which is why checking the recognition list beats trusting the claim.
The missing-evidence tell. No campus or business address beyond a post office box. No faculty listed, or faculty with no stated qualifications. Published claims with nothing behind them.
CHEA adds a caveat worth repeating, because it keeps this from turning into a witch hunt. Not every unaccredited program is a mill. An accreditor may be in the middle of seeking recognition. An institution may have reasons for skipping accreditation that have nothing to do with quality. CHEA also says plainly that its materials are not a verdict on any specific organization, and that you have to make that judgment yourself.
One scam targets consumers directly. CHEA warns that it never charges individuals for accreditation information, that unaffiliated websites use similar names, and that suspicious solicitations should be reported to the Federal Trade Commission.
Checking an accreditor in about ten minutes
This is a short sequence you can run yourself, and it works for a school, a training program, or a certification body.
Step one: get the name. Ask for the exact legal name of the accreditor, not the phrase “fully accredited.” If nobody will give you a name, you already have your answer.
Step two: check the recognition. Look the accreditor up in CHEA’s list of recognized accrediting organizations and the Department of Education’s listings. The question is not whether the accreditor exists. Anyone can incorporate. The question is whether it has been reviewed by one of the two recognizing bodies.
Step three: check the school or program, separately. Use CHEA’s searchable directories of accredited institutions and programs. Confirm both the institution and the specific program, because the two are accredited separately.
Step four: ask the licensing board the question that matters. Call the board that licenses the profession in your state and ask whether a graduate of that specific program qualifies to sit for the exam. Boards answer this question routinely. It cuts through every marketing claim at once.
If you are evaluating a practitioner rather than a school, you can usually skip straight to step four, because the board’s answer tells you what the accreditation was worth.
Facility accreditation is a different machine entirely
Switch to hospitals and labs and the whole structure changes, because federal money is involved.
The Centers for Medicare and Medicaid Services sets health and safety standards called conditions of participation. Facilities have to meet them to take Medicare and Medicaid patients. CMS does not usually do the inspecting itself. Under Section 1864 of the Social Security Act, state survey agencies conduct surveys on its behalf, which covers hospitals, nursing homes, home health agencies, dialysis facilities, hospices, and more.
Here is the mechanism most people have never heard of. Under Section 1865(a), a facility can satisfy Medicare’s requirements by getting accredited by a CMS-approved national accrediting organization instead of going through a state survey. CMS grants that power, called deeming authority, only when the accreditor’s standards meet or exceed Medicare’s and its survey process is comparable to what state surveyors do. A facility accredited by one of those bodies is then deemed to have met the federal requirements.
CMS lists nine approved accrediting organizations for its certified deemed programs, including The Joint Commission, DNV Healthcare, the Accreditation Commission for Health Care, the Accreditation Association for Ambulatory Health Care, and the Community Health Accreditation Partner. The deemed programs cover ambulatory surgical centers, critical access hospitals, dialysis facilities, home health agencies, hospice, hospitals including psychiatric hospitals, outpatient physical therapy, rural health clinics, and clinical laboratories. Separate approved accreditors handle advanced diagnostic imaging, diabetes self-management training, and home infusion therapy.
So when a hospital advertises accreditation, it is usually describing the route it chose to satisfy Medicare, not a distinction it earned over competitors. Both routes lead to the same federal floor.
Laboratories run on their own track. Congress passed the Clinical Laboratory Improvement Amendments in 1988, and they govern the quality of any testing performed on people in the United States. CMS says the program covers roughly 320,000 laboratory entities, with stricter requirements for more complex tests. Labs need a CLIA certificate to be paid by Medicare or Medicaid, and the public can check a lab’s certification status through the CLIA Laboratory Lookup on the CMS Quality, Certification and Oversight Reports site. CMS has also warned labs about third-party solicitations dressed up to look like official CLIA bills.
That same site, known as QCOR, is a genuinely useful and almost unknown consumer tool. It publishes survey and certification data for hospitals, ambulatory surgical centers, dialysis facilities, hospices, home health agencies, nursing homes, rural health clinics, and others, including statement of deficiency text for some provider types.
What the evidence says about accredited hospitals
Most people assume accreditation means better care. The best American study on that question says something more complicated, and it is worth knowing before you use accreditation status as a tiebreaker.
A 2018 observational study in BMJ by researchers at Harvard examined 4,400 US hospitals between 2014 and 2017. Of those, 3,337 were accredited, with 2,847 accredited by The Joint Commission, and 1,063 went through state-based review instead. The analysis covered more than 4.2 million Medicare patients aged 65 and older admitted for 15 common medical conditions and six common surgical conditions.
The results: 30-day mortality at accredited hospitals was 10.2% for the medical conditions versus 10.6% at state-surveyed hospitals, a gap the authors did not treat as statistically significant under their prespecified threshold. For the surgical conditions, mortality was essentially identical at 2.4% in both groups. Readmissions for the medical conditions were modestly lower at accredited hospitals, 22.4% versus 23.2%. Hospitals accredited by The Joint Commission showed no significant advantage over those accredited by other independent organizations. And patient experience scores were slightly better at the state-surveyed hospitals.
The authors’ conclusion was that accreditation by independent organizations was not associated with lower mortality, and only slightly associated with lower readmissions for the conditions studied.
Broader reviews land in the same uncertain place. A 2024 evidence review in the Journal of the American College of Surgeons, which screened thousands of studies on surgical quality standards, found the evidence on accreditation and adherence to external process measures mixed, with several studies showing benefit. A 2026 systematic review in BMC Health Services Research covering 13 studies published between 2014 and 2024 found accreditation associated with improvements in patient safety and quality, but the effects varied so much across settings that the authors could not responsibly pool them into a single number. A 2025 systematic review in PLoS One looking specifically at Joint Commission International accreditation found only 14 usable studies, called them extremely heterogeneous, and noted rising concern about the cost and workload accreditation creates.
Put honestly: this is observational evidence of mixed quality, not proof. Accreditation is a floor and a process check. It verifies that a facility has systems, documentation, and a schedule of review. It does not promise that your surgeon is good at your operation, which is a different question covered elsewhere in this library.
When accreditation should change what you do
Most days, it should not. If you are sick, go to the nearest appropriate care and sort out credentials later. Researching accreditors is not an emergency activity.
Here is when it earns your attention.
Before an elective procedure at a freestanding surgery center or a specialty clinic, it is reasonable to confirm the facility participates in Medicare and shows up in the federal oversight data, even if you are not on Medicare. QCOR is free and public.
When a lab result is driving a major decision, ask which laboratory ran the test and whether it holds a CLIA certificate. A test run outside a certified lab, interpreted by someone who then sells you the remedy, is a situation to bring to a licensed clinician before you act on it.
When a training program or certification is the only quality signal on offer, which is common in fields with light regulation, run the four steps above before you spend money.
And a clear line for getting professional help: if a practitioner has made a diagnosis or recommended stopping a treatment on the strength of a credential you cannot verify, take that recommendation to a licensed clinician before you follow it. If you are weighing it against symptoms that are getting worse, do not wait for a research project. Call your primary care clinician, and treat chest pain, trouble breathing, sudden weakness, or confusion as a 911 situation regardless of what anyone has told you.
The one question worth memorizing
Accredited by whom, and is that accreditor recognized?
That question does almost all the work. For schools and training programs, the answer gets checked in CHEA’s directories and the Department of Education’s listings, and confirmed with your state licensing board. For hospitals, labs, and clinics, the answer is usually a CMS-approved accrediting organization or a state survey agency, and the federal data is public at QCOR.
An organization proud of its accreditation will name the accreditor without being asked twice. An organization that will not is telling you what you need to know.
Sources
- US Department of Education. “Accreditation in the United States.” www2.ed.gov
- US Department of Education. “Accreditation.” ed.gov
- Council for Higher Education Accreditation. “About Accreditation.” chea.org
- Council for Higher Education Accreditation. “Important Questions About Degree Mills.” chea.org
- Council for Higher Education Accreditation. “CHEA- and USDE-Recognized Accrediting Organizations.” chea.org
- Council for Higher Education Accreditation. “Directories and Databases of Accredited Institutions and Programs.” chea.org
- National Center for Complementary and Integrative Health. “Credentialing, Licensing, and Education.” nccih.nih.gov
- Centers for Medicare and Medicaid Services. “Quality, Safety and Oversight: General Information.” cms.gov
- Centers for Medicare and Medicaid Services. “Accrediting Organizations (AOs).” cms.gov
- Centers for Medicare and Medicaid Services. “Clinical Laboratory Improvement Amendments (CLIA).” cms.gov
- Centers for Medicare and Medicaid Services. “Quality, Certification and Oversight Reports (QCOR).” qcor.cms.gov
- BMJ, 2018. PubMed. DOI: 10.1136/bmj.k4011. “Lam MB et al. Association between patient outcomes and accreditation in US hospitals: observational study.” doi.org
- Journal of the American College of Surgeons, 2024. PubMed. DOI: 10.1097/XCS.0000000000001126. “Cardell CF et al. Evidence review for the American College of Surgeons quality verification part III: standardization, protocols, and achieving better outcomes for patient care.” doi.org
- BMC Health Services Research, 2026. PubMed. DOI: 10.1186/s12913-026-14752-3. “Bhoomadevi A et al. Sustaining quality accreditation in hospitals: a systematic review with narrative synthesis.” doi.org
- PLoS One, 2025. PubMed. DOI: 10.1371/journal.pone.0325894. “Vuohijoki A et al. Impact of Joint Commission International accreditation on occupational health and patient safety: a systematic review.” doi.org