- NMM here means Neuromuscular Medicine, a subspecialty certification issued through the American Board of Physical Medicine & Rehabilitation (ABPMR).
- The 2026 exam runs October 19-23 and costs $2,000 on time: $1,400 exam plus $600 processing.
- The exam has 220 one-best-answer questions in four sections of 55, with no penalty for guessing.
- Peripheral nerve and muscle disorders are each 24-26% of content; clinical aspects of neurologic disease is 35-41%.
What NMM Certification Actually Is
NMM certification is a subspecialty credential in Neuromuscular Medicine. It recognizes physicians who have completed dedicated fellowship training in disorders of the motor neuron, nerve root, plexus, peripheral nerve, neuromuscular junction, and muscle, and who have demonstrated that knowledge on a standardized, proctored examination.
The acronym "NMM" is used by ABPMR for this credential. On this site, NMM always and only refers to Neuromuscular Medicine. If you are comparing it with other credentials that happen to share the abbreviation, keep in mind that the certifying body, eligibility rules, fees, and exam content described here apply to Neuromuscular Medicine alone. For a broader look at the terminology, see our explainers on what NMM stands for and NMM meaning.
Who Certifies and Who Tests
Two organizations are involved, and candidates often confuse their roles:
- ABPMR is the selected certifying issuer for the route described in this article. It sets the eligibility requirements for ABPMR-route candidates, collects the application and fees, and issues the certificate.
- ABPN (the American Board of Psychiatry and Neurology) develops, administers, and scores the shared initial subspecialty examination. It is delivered at Pearson Professional Centers.
This division matters for planning. Application questions, fees, and deadlines for the ABPMR route go through ABPMR. Exam content, format, and scoring documents come from ABPN. Do not substitute ABPN's own applicant-route fees, deadlines, or eligibility rules for the ABPMR ones; they are different pathways with different requirements. Always verify current details on the issuer's page at abpmr.org.
Eligibility Through the ABPMR Route
To sit for the exam through ABPMR, a candidate needs all of the following:
- Primary ABPMR certification in good standing.
- An unrestricted medical license in the United States, a US territory, or Canada.
- A 12-month ACGME-accredited post-residency neuromuscular medicine fellowship, including at least six months of direct clinical care.
- Completion of that fellowship by August 31 before the examination.
- A recommendation from the fellowship program director.
The August 31 completion cutoff is the detail that trips up candidates planning a transition between fellowship and first job. If your fellowship end date falls after August 31, you cannot sit for that cycle, and because initial testing is offered every other year, a missed cutoff can mean a long wait. Our NMM requirements guide walks through the eligibility checklist in more detail.
Exam Format and Security
Question format
The initial examination consists of 220 one-best-answer multiple-choice questions divided into four sections of 55. Each question has a single best response. Guessing is not penalized, so every item should be answered. Research or pretest items are included in the exam but excluded from scoring.
Timing
According to the current ABPN administrator document (Instructions for the Subspecialty Certification Examination in Neuromuscular Medicine: Format and Scoring, updated November 30, 2023), candidates receive 230 minutes for the questions and any optional inter-section breaks, plus five minutes for the NDA/tutorial and five minutes for a survey, for a total appointment of about four hours. Important: optional breaks consume the question timer. Time you spend on a break is time you do not have for questions.
There is a documented source conflict worth knowing about. ABPMR's overview describes the exam as one four-hour section with four hours of active testing plus tutorial, which differs from the detailed administrator timer above. Rather than guess, check the admission instructions for your sitting and plan your pacing for the more conservative reading.
Security rules
- The exam is closed book and in-person proctored at a Pearson Professional Center.
- Personal electronics and study materials are prohibited in the testing room.
- You must present two valid, signed IDs, one of which must be a government-issued photo ID.
Arrive with your identification verified in advance. A name mismatch between your registration and your IDs is an avoidable problem that can derail test day. Our difficulty guide discusses what the format means for pacing and stamina.
How the Content Is Mapped
The official content specifications (ABPN Certification Examination in Neuromuscular Medicine, Content Specifications, December 1, 2025) organize the exam along two intersecting dimensions. Every question is classified on both axes. That means the 17 weighted headings are not 17 independent, mutually exclusive domains, and the percentages from the two axes should never be added together. Each axis separately accounts for the whole exam.
Dimension 1: Neuromuscular Disorders and Topics
| Disorder Category | Official Range |
|---|---|
| Motor neuron disorders | 15-18% |
| Spinal root disorders | 4-6% |
| Plexopathies | 4-6% |
| Peripheral nerve disorders | 24-26% |
| Neuromuscular junction transmission disorders | 16-20% |
| Muscle disorders | 24-26% |
| Hyper-excitability disorders | 1-3% |
| Autonomic dysfunction in neuromuscular diseases | 1-3% |
| Questions not associated with a specific neuromuscular disorder | 1-2% |
Dimension 2: Physician Competencies and Mechanisms
| Competency Category | Official Range |
|---|---|
| Neuroscience and mechanism of disease | 7-13% |
| Clinical aspects of neurologic disease | 35-41% |
| Diagnostic procedures | 21-27% |
| Treatment/management | 17-23% |
| Interpersonal and communication skills | 1-3% |
| Professionalism | 1-3% |
| Practice-based learning and improvement | 1-3% |
| Systems-based practice | 1-3% |
Two takeaways stand out. On the disorder axis, peripheral nerve disorders and muscle disorders are jointly the largest at 24-26% each, so roughly half the exam's disorder content lives in those two areas. On the competency axis, clinical aspects of neurologic disease is the largest at 35-41%, followed by diagnostic procedures (21-27%) and treatment/management (17-23%). Our complete domains guide breaks down each content area.
Peripheral Nerve Disorders (24-26%)
The joint-largest disorder category and a natural anchor for electrodiagnostic reasoning.
- Distinguishing axonal from demyelinating patterns and their differential diagnoses
- Entrapment neuropathies versus polyneuropathies versus mononeuropathy multiplex
- Immune-mediated neuropathies and their treatment considerations
- Hereditary neuropathies and when genetic testing changes management
Muscle Disorders (24-26%)
Equal in weight to peripheral nerve, and heavily tied to both diagnostics and management.
- Inflammatory myopathies, muscular dystrophies, and metabolic and congenital myopathies
- Interpreting EMG, CK, imaging, and biopsy findings together
- Recognizing toxic and drug-induced myopathy
- Functional and rehabilitative management of progressive weakness
Neuromuscular Junction Transmission Disorders (16-20%)
A mid-sized category that rewards precise pattern recognition.
- Myasthenia gravis, Lambert-Eaton syndrome, and congenital myasthenic syndromes
- Repetitive nerve stimulation and single-fiber findings
- Therapy choices and crisis recognition
Fees and Testing Dates
| Item | 2026 Detail |
|---|---|
| Examination fee | $1,400 |
| Processing fee | $600 |
| Total if applied on time | $2,000 |
| Late application surcharge | +$500 |
| Testing window | October 19-23, 2026 |
| Frequency of initial testing | Every other year |
These are the ABPMR-route figures. For a fuller treatment, including what else to budget around the exam, see the NMM certification cost breakdown and the exam dates and deadlines guide. Always confirm current fees directly with ABPMR before you apply.
Passing Standard and Pass-Rate Context
Passing requires meeting an acceptable total-score performance standard. It is not a fixed pass-rate quota where a set percentage of candidates must fail. No fixed numeric passing score is published in the materials this article draws on, so be skeptical of any source that gives you a specific cut score. See our passing score explainer for how to think about this.
On pass rates, the only issuer-specific figure available is ABPMR's October 2024 first-time initial-certification cohort: six candidates and six passes. That is a very small cohort, specific to ABPMR, and it is not an ABPN-wide or all-candidate pass rate. It cannot predict any individual's outcome. A cohort of six simply does not support strong conclusions about difficulty. For a measured view, read what the pass-rate data shows.
Key Takeaway
Do not let a tiny cohort reassure or alarm you. Prepare against the content specification and the closed-book, 220-question format instead of against a pass-rate headline.
Continuing Certification After You Pass
Certification is not one-and-done. Continuing certification (CC) has four components: professionalism and licensure, lifelong learning, quality improvement, and a separate subspecialty assessment. Non-assessment requirements have reciprocity with your primary ABPMR certification, so activity you complete for your primary certificate can count toward both.
- Annual CC program fee: $360.
- CME: an average of 30 Category 1 credits per year, totaling 150 per five-year cycle.
- Self-assessment: the SA-CME requirement was reduced from 50 to 48 credits per five-year cycle, effective August 18, 2026. This newer announcement supersedes the older 50-credit figure that still appears in some timeline articles.
- Quality improvement: one Improving Health and Health Care (IHHC) project per five-year cycle.
On August 12, 2026, ABPMR also announced an NMM Article-Based Continuing Certification (ABCC) pathway beginning in 2027. That future maintenance pathway, like the separate 150-question CC examination, does not replace the 2026 initial-certification examination. If you are testing this October, you are taking the initial exam described above.
Sequencing Your Preparation
Because the exam is mapped on two axes, schedule your time by weight and by dependency. This is the one place for a study timeline, and it is tied to NMM specifics rather than generic advice. For a complete plan, see the NMM study guide.
Anchor on the heaviest categories
- Peripheral nerve disorders and muscle disorders first, since each is 24-26%
- Pair each disease with its diagnostic procedures and treatment logic
Add junction and motor neuron disease
- Neuromuscular junction transmission disorders (16-20%)
- Motor neuron disorders (15-18%), including diagnostic criteria and supportive management
Fill the smaller categories
- Spinal root disorders and plexopathies (4-6% each)
- Hyper-excitability and autonomic dysfunction (1-3% each)
Simulate the sitting
- Practice in four 55-question sections without notes
- Rehearse pacing against the 230-minute question timer, remembering breaks consume it
Because competency content like professionalism and systems-based practice is only 1-3% each, do not neglect it but do not over-invest either. For rapid last-pass review, the NMM cheat sheet condenses must-know facts, and you can test yourself on realistic items with the NMM practice test.
Frequently Asked Questions
No. It is a subspecialty certification. Through the ABPMR route you must already hold primary ABPMR certification in good standing and complete an ACGME-accredited neuromuscular medicine fellowship.
ABPN develops, administers, and scores the shared initial subspecialty examination, which is delivered at Pearson Professional Centers. ABPMR remains the certifying issuer for the route described here.
There are 220 one-best-answer multiple-choice questions in four sections of 55. Guessing is not penalized, and research or pretest items are excluded from scoring, so answer every question.
For the ABPMR route, the examination fee is $1,400 plus a $600 processing fee, totaling $2,000 if you apply on time. Late applications add $500. See the cost breakdown for planning details.
That depends on your practice setting, referral patterns, and career goals. Our ROI analysis and NMM jobs overview explore how the credential can factor into hiring and practice opportunities, though no single figure applies to everyone.