Neither an MD nor a DO is objectively better. Both degrees produce fully licensed physicians who can practice in every medical specialty, prescribe medications, perform surgery, and treat patients in identical settings. A large study of more than 329,000 hospitalized Medicare patients found virtually no difference in outcomes: mortality rates were 9.4% for MD-treated patients versus 9.5% for DO-treated patients, readmission rates were nearly identical (15.7% vs. 15.6%), and the average hospital stay was four and a half days for both groups. The real differences are in training philosophy, curriculum, and career trends.
What Actually Differs in Training
MD students attend allopathic medical schools, and DO students attend osteopathic medical schools. Both programs are four years long, cover the same core sciences and clinical rotations, and prepare graduates to enter the same residency programs. The key curricular difference is that DO students complete roughly 200 additional hours of training in osteopathic manipulative treatment (OMT), a set of hands-on techniques for diagnosing and treating musculoskeletal problems.
Osteopathic training also emphasizes a specific philosophy: the interconnectedness of body structure and function, the body’s capacity to heal itself, and a whole-person approach that factors in lifestyle and prevention alongside conventional treatment. MD programs traditionally center on a biomedical model focused on diagnosing and treating disease. In practice, these philosophical differences have narrowed considerably. Many MD programs now teach preventive medicine and holistic care, and many DOs practice in ways indistinguishable from their MD colleagues.
Licensing and Legal Standing
MDs and DOs hold identical practice rights in all 50 states. State medical practice laws explicitly prohibit discrimination between the two degrees. Both can specialize in any field, hold hospital privileges, and lead medical teams. The licensing exams differ in name: MD graduates take the USMLE, while DO graduates take the COMLEX-USA. Many DO students choose to take both exams, particularly if they’re applying to competitive residency programs where USMLE scores are a common benchmark.
Since 2020, all residency training programs in the United States fall under a single accreditation system run by the ACGME. Previously, osteopathic graduates had their own separate residency track. The merger means MD and DO applicants now compete for the same residency slots on equal footing. During the transition, 98% of previously osteopathic-only programs successfully earned ACGME accreditation.
Specialty and Career Patterns
The most notable statistical difference between the two degrees is where graduates end up practicing. About 60% of DOs work in primary care fields like family medicine, internal medicine, and pediatrics, compared with roughly 28% of MDs. This reflects osteopathic medicine’s historical emphasis on primary care, though the gap is shrinking as more DO graduates pursue subspecialties and surgical fields.
DOs currently make up about 11% of all physicians in the U.S. but more than 25% of all medical students, a sign that the profession is growing rapidly. In 2025 alone, nearly 9,000 new DO graduates entered the workforce. That growth means patients will increasingly encounter DOs across every specialty, not just family medicine.
If You’re Choosing a Doctor
For patients, the degree after your doctor’s name is one of the least important factors in the quality of care you’ll receive. The UCLA-led study that compared outcomes across hundreds of thousands of patients put it plainly: the distinctions between allopathic and osteopathic training were not associated with differences in cost or quality of hospital care. A doctor’s residency training, years of experience, communication style, and familiarity with your specific condition matter far more than whether they graduated from an MD or DO program.
One practical difference you might notice is that a DO may be more likely to incorporate hands-on musculoskeletal techniques into your visit. OMT has been studied most extensively for nonspecific low back pain and is offered as a treatment option by some DOs, though not all practicing DOs use it regularly. If hands-on manual therapy appeals to you, asking whether your physician offers OMT is reasonable.
If You’re Choosing a Medical School
For prospective medical students, the decision often comes down to competitiveness, location, and personal fit rather than a clear superiority of one path. MD programs generally have higher average admissions statistics, but both pathways lead to the same career destinations. DO graduates match into every specialty, including competitive ones like orthopedic surgery and dermatology, though having strong board scores and research experience matters more for DO applicants targeting those fields.
Consider what you value in your education. If the osteopathic philosophy resonates with you, or if you’re drawn to primary care, a DO program aligns naturally. If you’re focused on a highly competitive subspecialty and want every possible advantage in the residency match, an MD program at a research-heavy institution may offer more built-in opportunities. Either way, your performance in medical school, your board scores, and the strength of your clinical experiences will shape your career far more than the two letters on your diploma.