Becoming a naturopathic doctor requires a four-year graduate degree from an accredited naturopathic medical school, followed by passing a national licensing exam. The total path from undergraduate studies to independent practice typically takes eight or more years, similar in structure to conventional medical training. Here’s what each step involves.
Undergraduate Prerequisites
Before applying to a naturopathic medical program, you need a bachelor’s degree with a strong foundation in the sciences. Most accredited schools require coursework in general chemistry (two semesters with labs), general biology (two semesters with labs), organic chemistry (at least one semester with lab), physics, psychology, and college-level math. These courses need to be science-major level, not introductory survey classes, and most programs require a C or better in each one.
Competitive applicants typically carry a cumulative GPA of 3.0 or higher. The Canadian College of Naturopathic Medicine requires a minimum 2.7 GPA but notes that admitted students average between 3.0 and 3.3. The National University of Health Sciences sets its minimum at 3.0, with a provisional admissions track for applicants between 2.75 and 2.99. No specific undergraduate major is required, but biology, chemistry, and human physiology are common choices that naturally cover most prerequisites.
The Four-Year ND Program
Naturopathic medical school is a four-year, graduate-level doctoral program. The curriculum covers the same foundational sciences as conventional medical school: anatomy, physiology, biochemistry, pathology, microbiology, and immunology. On top of that, ND students study clinical nutrition, botanical medicine, homeopathy, physical medicine, psychology, and counseling. The emphasis throughout is on disease prevention, wellness optimization, and non-toxic therapeutic approaches.
Programs are primarily campus-based, meaning most coursework and clinical training happens in person rather than online. Clinical hours are built into the later years, where students treat patients under faculty supervision in teaching clinics. This hands-on component is essential for developing diagnostic and treatment skills before graduation.
Accredited Schools in North America
Only a handful of institutions hold accreditation from the Council on Naturopathic Medical Education, the recognized accrediting body for ND programs. Graduating from a CNME-accredited school is a prerequisite for licensure in every state that regulates naturopathic practice. The current accredited programs are:
- Bastyr University in Kenmore, Washington and San Diego, California
- Canadian College of Naturopathic Medicine in Toronto, Ontario and New Westminster, British Columbia
- National University of Natural Medicine in Portland, Oregon
- National University of Health Sciences in Lombard, Illinois
- Sonoran University of Health Sciences in Tempe, Arizona
- Universidad Ana G. Méndez in Gurabo, Puerto Rico
Your choice of school may matter geographically. Some states have closer relationships with nearby programs for clinical rotations and networking, though graduates of any CNME-accredited school can apply for licensure in any licensing state.
What It Costs
Tuition for a four-year ND program ranges from roughly $20,000 to $45,000 per year, depending on the school. First-year tuition at U.S. schools currently runs from about $32,000 at the National University of Health Sciences to $45,425 at Sonoran University. Bastyr and the National University of Natural Medicine fall in the $42,000 to $43,000 range. The Canadian College of Naturopathic Medicine is the most affordable option for Canadian residents at about $28,000 CAD per year.
On top of tuition, expect a few thousand dollars annually for textbooks, lab fees, equipment, and licensing exam fees. Living expenses are separate. The total four-year investment, including living costs, can easily reach $200,000 or more at higher-priced schools. Federal student loans are available for students at accredited U.S. programs, just as they are for other graduate health professions.
The NPLEX Licensing Exams
To practice as a licensed naturopathic doctor, you must pass the Naturopathic Physicians Licensing Examinations, known as NPLEX. The exam has two parts, typically taken at different points during your education.
Part I is the Biomedical Science Examination, covering anatomy, physiology, biochemistry, genetics, microbiology, immunology, and pathology. It consists of 200 multiple-choice questions split across two sessions of two and a half hours each. Students usually take Part I after completing their basic science coursework, around the end of their second year. The questions are case-based but brief, testing your understanding of the science behind a patient’s condition rather than diagnosis or treatment.
Part II is the Core Clinical Science Examination, a much larger test with approximately 400 items spread across three days (three and a half hours per day). It presents detailed clinical cases and asks you to work through differential diagnosis, select appropriate lab tests, prescribe therapies, and respond to acute care scenarios. The content spans botanical medicine, homeopathy, nutrition, physical medicine, psychology, pharmacology, and emergency medicine.
Some states also require Part II Clinical Elective Examinations in areas like acupuncture, minor surgery, pharmacology, or parenteral medicine. Each elective is 75 questions completed in 90 minutes. Which electives you need depends entirely on the state where you plan to practice.
State Licensure
At least 23 states and Washington, D.C., currently regulate naturopathic doctors. These include Arizona, California, Colorado, Connecticut, Hawaii, Kansas, Maine, Maryland, Massachusetts, Montana, New Hampshire, New Mexico, North Dakota, Oregon, Utah, Vermont, Washington, and several others. If your state isn’t on the list, it may not have a licensing framework for naturopathic medicine, which significantly affects what you can legally do in practice.
What you’re allowed to do as an ND varies dramatically by state. Fifteen states grant some form of prescriptive authority, allowing naturopathic doctors to prescribe certain medications. Eight states (Arizona, California, New Hampshire, New Mexico, Oregon, Utah, Vermont, and Washington) go further and allow NDs to prescribe limited controlled substances, though some require oversight from an MD or DO. Certain states also authorize NDs to administer injections and perform minor procedures. Others restrict practice to natural therapeutics like vitamins, minerals, and botanical preparations. Researching your intended state’s scope of practice before committing to this career path is worth the time.
Optional Residency Training
Residencies are not required for licensure in any state except Utah, but many new graduates choose to complete one to three years of post-doctoral training. These residency programs provide mentored clinical experience with higher patient volumes than you’d see in school. NDs who complete residencies often feel more confident managing complex cases independently. Residency positions are competitive, and fewer spots exist than in conventional medicine, so not every graduate who wants one will secure a placement.
Keeping Your License Current
Once licensed, you’ll need to complete continuing education to maintain your credentials. Requirements vary by state. California, for example, mandates 60 hours of approved continuing education every two years, with at least 20 of those hours in pharmacology. Other states set their own thresholds and topic requirements. This is an ongoing professional obligation for as long as you hold an active license.