I'm a DO student.
The "more than historical" difference is on several levels. We have different accrediting bodies that require different things of our schools. A DO school is not an MD school because it likely is not up to LCME standards, even were said school to apply, as most DO schools could not meet the non-tuition funding requirements, the research requirements, or the teaching hospital requirements required by the LCME. There is a not insubstantial amount of our education dedicated to the practice of OMM, which makes our education different than our MD counterparts, even if we choose not to use it one day in practice.
It's not that DO education is inferior, it is just substantially different. We generally do not have large attached teaching hospitals, we do not have the crazy amount of full-time researchers the LCME requires (I believe it is 70, but I could be wrong), and we devote hundreds of hours to studying OMM over the course of our education. We are required to take a different licensing exam (in addition to the USMLE if we so choose) that has a different focus to its questions and additional questions about OMM to boot.
It's like saying wine and sherry are the same thing. They are very similar, but there is a substantial enough difference that to say that they are the same is disingenuous. The both do the job, certainly, but they are not the same product and they do not make it to the shelf by the same process.
What you have done is answered the question "what is different about LCME and COCA"
Schools that award the MBBS are non-LCME as are offshore MD schools.
This does not address the question of how the education is actually different. The "not insubstantial" time devoted to OMM that you mention comes out to a total of ~3% of my total med school hours (all 4 years). Yet my degree is designated 100 to this fraction of my education.
On top of that, my 3rd and 4th year training was from all MDs and included zero OMM. I then went to an ACGME Residency with zero OMM. And I now practice indistinguishably from my colleagues again with zero OMM.
Not only this but with the merger of residency programs ahead, COCA is set to be crushed and it is only a matter of time until the pressure will extend to DO schools to put up or get out.
The AOA which may face extinction in the coming years, is not going to look out for our options and future. We must do that. We must have our options secured before the ship sinks not after.
-excerpt from letter written to the board of Deans from Norman Gevitz PhD.
“If unification and one common standard are desirable for the osteopathic medical profession and in the public interest with respect to graduate medical education, what compelling and rational reason is there for the AOA and/or AACOM to NOT join with LCME in one unified undergraduate medical education accreditation system with one common standard?”
"there is no doubt that going forward, growing and enormous pressure will be placed by organized allopathic medicine to have osteopathic medical schools adhere to the same accreditation standards as a prerequisite for allowing newly graduated DOs into ACGME programs—not withstanding AOA and AACOM membership on the ACGME Board.
Your Board’s response to the question has to be more than the non-answer “We have no plans to consider joining the LCME.” If you and your deans cannot fashion a compelling and rational argument against joining the LCME, then the vote of the Board of Deans to support a unified GME program under the auspices of ACGME will inevitably lead to osteopathic medical schools having to meet LCME standards. This will result in each of the schools having to make new and substantial financial commitments. If schools cannot find the necessary resources to make changes needed to comply with LCME standards and expectations, they will, without question, close. And if our colleges close there will be fewer DO graduates each year to compete with MD graduates for scarce residency positions."
"It would be illusory to expect that LCME would establish a different standard for osteopathic medical schools from that to which currently LCME-accredited community-based medical schools must adhere. When homeopathic and eclectic medical schools agreed to become accredited by the AMA in the first decade of the 20th century, no special accommodation was made for their schools. In 1905, there were no less than 24 homeopathic and eclectic medical colleges. In 1935, the number of such schools shrunk to a mere 3. In that latter year, the two surviving homeopathic medical colleges were required to drop all mention of “homeopathy” in their self-descriptions and remove any semblance of homeopathy from the required medical school curriculum. In 1939, the last surviving eclectic medical school closed its doors forever. To not know allopathic accreditation history may prove disastrous for currently existing osteopathic medical schools."
If we are not careful to advocate for our equivalence, as would be effectively done by establishing the ability to be designated MD as do other non lcme physicians, it is not inconceivable that your degree designation could hold much less value in the future.