NMD vs MD vs DO vs NP: What’s the Difference?

It’s one of the most searched questions in healthcare — and one of the least clearly answered. If you’re choosing a provider for your health, you deserve to know exactly how each one is trained, what they’re licensed to do, and what tools they bring to your care.

Here’s the side-by-side, drawn from the accrediting bodies and Arizona law — not opinion.

A licensed Naturopathic Medical Doctor (NMD) completes a four-year, doctoral-level medical program covering the same core biomedical sciences as MD and DO programs — anatomy, physiology, pathology, biochemistry, pharmacology, and clinical diagnosis. Then the training goes further. Arizona law defines naturopathic medicine to include clinical nutrition, botanical medicine, homeopathy, counseling, acupuncture, hydrotherapy, and physical manipulation — modalities that are core curriculum for NMDs and absent from conventional training (A.R.S. §32-1501).

Side-by-Side Comparison

Comparison based on core accredited curriculum and Arizona scope of practice. Sources current as of 2026. See references below.

*Arizona NMDs may hold a Certificate to Dispense issued by the Naturopathic Physicians Medical Board, renewed annually, allowing medications to be dispensed directly from the office. In-office dispensing is not standard practice for other provider types and requires separate registration where permitted. Integrative Medical Partners maintains an active dispensing certificate.

What This Means for You

Every provider on this table plays a role in healthcare. The difference is in the toolbox. An NMD is trained in the full conventional medical sciences AND the natural, root-cause modalities — as core curriculum, not a weekend certificate. That means one physician who can order your labs, prescribe when pharmaceuticals are the right tool, and reach for nutrition, botanical medicine, and mind-body approaches when they’re the better one.

This Is Why Experience Matters

Training tells you what a provider CAN do. Experience tells you what they’ve DONE. Here’s Dr. Ty Tallman’s clinical record:

Medical Leadership

Medical Director — 2+ years, overseeing up to 8 clinics simultaneously. Now Medical Director of Integrative Medical Partners.

Core Service Offerings

Every service below is physician-performed. Tap any service to learn more.

If anything was possible regarding your health, what would you want? That’s the conversation we start with.

Integrative Medical Partners
1910 S Stapley Dr #120, Mesa, AZ 85204
480-219-2624

Frequently Asked Questions

Is an NMD a real doctor?

Yes. In Arizona, a Naturopathic Medical Doctor is a licensed physician regulated by the Naturopathic Physicians Medical Board under A.R.S. Title 32, Chapter 14. NMDs graduate from four-year, doctoral-level medical programs accredited by the Council on Naturopathic Medical Education and pass national board exams (NPLEX) covering biomedical and clinical sciences.

What is the difference between an NMD and an MD?

Both complete four-year doctoral medical programs covering the same core biomedical sciences. The difference is scope of training: NMD education adds clinical nutrition, botanical medicine, natural manipulative therapy, counseling, and other natural modalities as core curriculum. MD training is disease-focused and continues into a mandatory hospital residency.

What is the difference between an NMD and a nurse practitioner?

An NMD is a physician trained in a four-year doctoral medical program with over 4,100 contact hours and a minimum of 1,200 supervised clinical hours. An NP is an advanced practice nurse trained in a graduate nursing program requiring a minimum of 500 supervised direct patient care hours. Both can prescribe in Arizona; only the NMD is licensed as a physician and trained in both conventional and natural therapeutics.

Can an NMD prescribe medication in Arizona?

Yes. Arizona NMDs have prescriptive authority, including controlled substances with appropriate board certification and DEA registration. NMDs are trained in pharmacology as part of their core medical education and integrate pharmaceutical and natural options based on what’s right for the patient.

Can an NMD perform surgery?

Yes. In Arizona, licensed NMDs may perform surgery within their scope of practice as defined by state law and board regulation.

References

1. Association of Accredited Naturopathic Medical Colleges (AANMC). “Comparing ND & MD Curricula.” aanmc.org/comparing-nd-md-curricula
2. Council on Naturopathic Medical Education (CNME). Accreditation standards. cnme.org
3. Arizona Naturopathic Physicians Medical Board. A.R.S. Title 32, Chapter 14 (§32-1501 et seq.). nd.az.gov/statutes
4. Association of American Medical Colleges (AAMC). Medical school curriculum and residency requirements. aamc.org
5. Liaison Committee on Medical Education (LCME). “Functions and Structure of a Medical School.” lcme.org
6. American Association of Colleges of Osteopathic Medicine (AACOM). Osteopathic medical education and OMT training. aacom.org
7. American Osteopathic Association (AOA). Licensure and COMLEX-USA. osteopathic.org
8. National Task Force on Quality Nurse Practitioner Education. “Standards for Quality Nurse Practitioner Education,” 6th Edition (2022).
9. American Association of Colleges of Nursing (AACN). “The Essentials: Core Competencies for Professional Nursing Education.” aacnnursing.org
10. Arizona State Board of Nursing. APRN scope and full practice authority. azbn.gov