There is no single "best" platform for US physicians, because the honest answer depends on what you need: a professional network, a place to discuss tough cases, side income, current reference, or board prep. This guide maps the US landscape by need and by role, says plainly what each platform is good and bad for, and flags the confidentiality line that applies everywhere. It is written for attendings, residents, medical students, IMGs and locums, so skip to the section that fits you. One rule throughout: none of these replace governed channels for patient-specific information.
Key takeaways
- Doximity is the dominant US professional network; Sermo adds global discussion and paid surveys.
- Figure 1 is the go-to for visual, image-based case learning.
- Medscape leads for medical news, drug reference and free CME, now with an AI layer.
- Reddit and Student Doctor Network cover sentiment, career decisions and board prep.
- Match the platform to the need, and keep patient-identifiable detail out of all of them.
Professional networks
At the center of US physician life online is Doximity, which describes itself as the leading platform for US healthcare professionals with over three million members, including more than 85 percent of US physicians. Think of it as the profession's network plus workflow: a verified directory, a dialer that shows your office number when you call patients, a fax service, curated specialty news, and a large jobs board. For most US physicians and residents it is the default, less for lively debate and more for being where the profession is, staying current, and finding roles.
Peer discussion and paid surveys
Sermo is the other major network, and it does different jobs. With over 1.5 million verified members across more than 150 countries, it combines anonymous peer discussion and case crowdsourcing, the largest physician drug-ratings database, and paid market-research surveys that provide a genuine side income, commonly 25 to a few hundred dollars each. You can participate anonymously or under your name. It is strong for global peer input, case discussion and income; it is not a source of authoritative guidance, and its global membership means advice may not map to US practice. We compare it directly with Doximity and Figure 1 in Sermo vs Doximity vs Figure 1.
Visual case collaboration
For image-based cases, Figure 1 is the standout, positioning itself as the largest community of verified healthcare professionals collaborating on real cases. It is built around de-identified clinical images, where clinicians crowdsource a differential, confirm a diagnosis, or simply learn from a deep library of cases. It is especially valuable for image-heavy specialties like dermatology and radiology, and for building pattern recognition. It is free, and, like any case platform, depends on rigorous de-identification.
Reference, news and CME
For staying current and for reference, Medscape leads, describing itself as reaching more than 13 million healthcare professionals, with medical news, drug and disease reference, extensive free CME, and, since late 2025, a generative AI layer. It is a WebMD company. Alongside it, point-of-care decision-support tools such as UpToDate and drug references such as Epocrates are staples for clinical reference. These are reference and education resources rather than communities, and they complement the networks above.
Forums, Reddit and board prep
For candid discussion and career decisions, the forums matter. Student Doctor Network runs moderated, nonprofit forums covering the whole training pathway, including a dedicated forum for international medical graduates on ECFMG and residency. On Reddit, communities such as r/medicine and r/residency host frank discussion of practice, pay, burnout and career moves, and the exam-specific communities are central for board prep, which we cover in best USMLE communities. Use these for sentiment and lived experience, not for patient-specific clinical answers.
By role: where to start
The landscape looks different depending on where you are:
- Attendings: Doximity for network, news and jobs, Sermo for discussion and survey income, Medscape and UpToDate for reference.
- Residents: r/residency and Doximity, Sermo for survey income between shifts, and specialty subreddits for fellowship and job planning.
- Medical students: Student Doctor Network for the application and pathway, the exam communities for boards, and Anki communities for retention.
- IMGs: Student Doctor Network's IMG forum for ECFMG and the Match, plus the exam communities, and see the wider pathway resources.
- Locums: the physician networks for jobs and peer intel, plus the locum agencies covered in the best locum tenens platforms for US physicians.
The confidentiality line
Whatever you use, the same principle holds under HIPAA: never post protected health information, and remember that the sum of small details can identify a patient even without a name, which matters most for unusual cases. Case platforms provide de-identification tools, but the responsibility is yours. Strip identifiers, avoid distinctive combinations, and never post identifiable images without appropriate consent and de-identification.
Where iatroX fits
These are networks, communities and reference tools, and iatroX is a different layer: source-grounded reasoning and structured learning. It does not replace your professional network or your point-of-care reference; it helps you work through clinical reasoning with a Socratic tutor and build retained knowledge with adaptive practice, which is especially useful for board preparation. Its clinical reference is grounded in UK guidance, so US users should treat it as a reasoning and learning aid alongside US sources. You can try it with free sample questions at iatroX.
Frequently asked questions
What is the best online community for US physicians? It depends on the need. Doximity leads for professional networking, news and jobs; Sermo for global discussion, case crowdsourcing and paid surveys; Figure 1 for visual cases; Medscape for news, reference and CME.
Which platform pays physicians for surveys? Sermo is the established platform for paid physician surveys, commonly 25 to a few hundred dollars each, alongside its community features. It reports paying members tens of millions of dollars a year.
Where do US physicians discuss careers and pay? On Reddit communities such as r/medicine and r/residency, and on Student Doctor Network's forums, which are best for sentiment and lived experience rather than patient-specific clinical advice.
Can I discuss patient cases on these platforms? Only with rigorous de-identification and never with protected health information, per HIPAA. The sum of details can identify a patient even without a name, so strip identifiers and avoid distinctive combinations, and never post identifiable images without consent.
How does iatroX fit for US physicians? As a source-grounded reasoning and learning layer, particularly useful for board preparation, rather than a network or point-of-care reference. US users should use it alongside US clinical sources, since its reference is grounded in UK guidance.