In April 2024, AMBOSS acquired NEJM Knowledge+, the NEJM Group board review and CME tool for internal medicine, family medicine, and pediatrics, and folded it into its platform as AMBOSS Knowledge+ Board Review. For residents and physicians preparing for ABIM, ABFM, ABP, and now ABEM exams, it means board questions, an adaptive engine, a clinical library, and MOC-earning CME now live in one place. Here is what that helps, what it risks, and the alternatives worth knowing.
Key takeaways
- AMBOSS acquired NEJM Knowledge+ in April 2024 and rebranded it AMBOSS Knowledge+ Board Review.
- It covers ABIM, ABFM, ABP, and ABEM board prep, with CME and ABIM MOC points.
- Integration puts board questions, the AMBOSS library, and clinical tools in one adaptive platform.
- What gets lost is the standalone, independently branded NEJM product experience.
- For US boards specifically, AMBOSS is now a serious option; leaner and cheaper stacks still exist.
What was NEJM Knowledge+, and who relied on it?
NEJM Group, the publisher of the New England Journal of Medicine, launched NEJM Knowledge+ in 2014 as a learning and assessment tool for clinicians. It offered board review for internal medicine, family medicine, and pediatrics, using adaptive learning to focus study time, and it let physicians earn CME credits and ABIM Maintenance of Certification (MOC) points. Its users were residents and practicing physicians preparing for initial certification or recertification, and clinicians meeting CME and MOC requirements. Its value rested heavily on the trusted NEJM brand and its adaptive, blueprint-mapped question banks.
How does it fold into AMBOSS board prep?
AMBOSS integrated the product rather than running it separately. NEJM Knowledge+ questions are now available inside the AMBOSS Qbank, rebranded as AMBOSS Knowledge+ Board Review, spanning ABIM, ABFM, ABP, and ABEM. Subscribers get the questions alongside the AMBOSS Medical Library and clinical tools, with the adaptive engine, practice exams, and CME plus ABIM MOC points retained, including automatic MOC transmission if you supply your ABIM details. The former NEJM Resident 360 content was also brought onto the platform. The design goal AMBOSS stated is a single platform where board preparation and clinical practice converge.
What does integration help, and what gets lost?
Integration genuinely helps in one direction: consolidation. Instead of a standalone board-review product plus a separate reference, a resident gets board questions, a clinical library to learn from, adaptive targeting, and MOC-earning CME in one flow, with question-to-article navigation that suits how people actually study on the wards. What gets lost is independence and identity. NEJM Knowledge+ was a distinct, NEJM-branded product, and some clinicians valued that separateness and the direct NEJM association. Folding it into a larger platform trades a recognizable standalone tool for a component of a bigger system, and the old standalone entry points have closed. Whether that is a gain or a loss depends on whether you wanted a board-review product or a whole platform.
Does this change the ABIM and ABFM prep calculus?
To a degree, yes. AMBOSS was already strong with US medical students and increasingly with residents, and absorbing a trusted board-review asset makes it a more serious contender for board and recertification prep specifically, not just Step preparation. For a candidate choosing an ABIM or ABFM resource, AMBOSS Knowledge+ now competes directly on the integrated library-plus-Qbank-plus-CME proposition, where previously the board-review space was dominated by other names. It does not automatically make it the best choice, but it puts AMBOSS firmly in the conversation.
Alternatives for residents who want a leaner or cheaper stack
If you do not want a full platform, alternatives remain. For internal medicine, MKSAP is the long-established board-review reference, and UWorld offers a widely used board Qbank. Official board resources and society materials cover blueprints and sample questions at low or no cost. A resident who only needs targeted question practice for one board can often assemble a leaner, cheaper stack than a comprehensive subscription, at the cost of the integrated library and MOC automation.
Where does iatroX fit for multi-jurisdiction residents?
Honestly, for US boards specifically, iatroX is not the tool; it is UK and internationally focused. Where it fits is for residents who also face UK or international exams, where a single subscription covering multiple exams matters. iatroX offers multi-exam coverage across UK and international exams (UKMLA, PLAB, MRCP, MRCGP and many specialist and overseas exams), with semantic adaptive learning that maps weaknesses, at £29 per month or £99 per year with free sample questions. For a doctor moving across jurisdictions, that breadth and price are the relevant point, not US board prep. You can try the free questions to see the coverage. For the wider strategy, see our piece on AMBOSS's funding and IPO path.
Frequently asked questions
What is AMBOSS Knowledge+? It is AMBOSS's board review offering, built from the acquired NEJM Knowledge+ product. It covers ABIM, ABFM, ABP, and ABEM board prep, integrated with the AMBOSS library and clinical tools, with CME and ABIM MOC points.
When did AMBOSS acquire NEJM Knowledge+? In April 2024. NEJM Group had launched the product in 2014 for internal medicine, family medicine, and pediatrics board review and CME.
Is NEJM Knowledge+ still available separately? No. It has been folded into AMBOSS as AMBOSS Knowledge+ Board Review, and the former standalone entry points have closed. The content and MOC-earning CME continue inside AMBOSS.
Is AMBOSS good for ABIM board prep now? It is a serious option, combining board questions, an adaptive engine, the AMBOSS library, and MOC-earning CME in one platform. Whether it is best for you depends on whether you want a full platform or a leaner stack.
What are cheaper alternatives for board review? MKSAP for internal medicine, UWorld's board Qbank, and official society resources. A targeted, questions-only stack can be cheaper than a full subscription, without the integrated library and MOC automation.