Twitter-HashtagsAs the Free Open Access Meducation (FOAM; #FOAMed) movement has continued to flourish over the past few years, Twitter has become a vital method for disseminating/discussing educational and clinical content. We thought it would be interesting to see who is being ‘followed’ on Twitter in the FOAM world. Certainly, the metric of Twitter followers does not necessarily correlate with quality. And, it misses newcomers to the FOAM scene and those with a more focused area of expertise/interest. We are more interested in understanding the landscape such as who is involved, geographic locations, areas of expertise, and association with blogs/podcasts.

Our search strategy was simple:

  1. Twitter was searched for all users with #FOAMed, #FOAMcc, #FOAMtox, #FOAMped, #FOAMems, #FOAM4GP, and/or #FOAM in his/her Twitter profile. *
  2. This was cross-referenced with Dr. Mike Cadogan’s (@sandnsurf) FOAMed Twitter list (1,074 members as of May 8, 2015).

Most Followed #FOAMed Twitter Users **

RankTwitter NameTwitter HandleLocation ***FollowersJoined Twitter
1Scott Weingart@EMCritStony Brook, NY17,994Apr 2009
2Mike Cadogan@SandnsurfPerth, Western Australia16,519Oct 2008
3Radiology Signs@RadiologySigns14,724May 2012,341Feb 2013
5EMS 12-Lead@EMS12LeadHilton Head Island, SC11,581Mar 2010
6Chris Nickson@PrecordialThumpMelbourne, Australia9,919Nov 2008
7Michelle Lin@M_LinSan Francisco, USA9,917Apr 2009
8FOAM Highlights@FOAM_HighlightsPhiladelphia, PA9,909Dec 2012
9Matt@TheMattMakLondon via Liverpool9,080Mar 2011
10Haney Mallemat@CriticalCareNowBaltimore, USA8,780Nov 2010
11Minh Le Cong@ketaminh8,152Nov 2011
12Cliff Reid@CliffReidSydney8,038Mar 2009
13The SMACC Team@SMACCTeamGlobal7,181May 2013
14Rob Rogers@EM_EducatorLexington, Kentucky6,833Jun 2009
15Seth Trueger@MDawareChicago6,786Jun 2011
16Critical Care Guys@critcareguys6,734Feb 2011
17Matt and Mike@UltrasoundPodMatt (KY) & Mike (UT)6,722Aug 2011
18IntensiveCareNetwork@I_C_NSydney, Australia6,708Feb 2011
19Bryan D Hayes@PharmERToxGuyBaltimore, MD6,613Feb 2012
20Simon Carley@EMManchesterManchester6,591Feb 2009
21Rob Orman@EmergencypdxSnowmass, CO6,579Jun 2010
22ED Doc@4hrEmergencyDocLondon6,345Oct 2010
23David Juurlink@DavidJuurlinkToronto5,922Jan 2012
24Steve Carroll@EMBasicSan Antonio, TX5,575Dec 2011
25Anand Swaminathan@EMSwamiNYC5,518Mar 2013
26Ryan Radecki@EMLitofNotePortland, OR5,131Jun 2011
27Joe Lex@JoeLex5Philadelphia5,106Jul 2012
28Steven W. Smith@SmithECGBlogMinneapolis5,046Jun 2011
29Pam Nelmes@Pam007NelmesCornwall, UK4,631Sep 2010
30Michelle Johnston@EleytheriusPerth4,561Feb 2010
31Salim R. Rezaie@srrezaieSan Antonio, TX4,393Feb 2013
32Andy Neill@AndyNeillIreland4,364May 2011
33Graham Walker@GrahamWalkerSan Francisco, CA4,277Jul 2007
34Damian Roland@Damian_RolandLeicester, UK4,125Jan 2012
35Leon Gussow@PoisonReviewChicago, IL4,100Nov 2009

* Those without one of the FOAM hashtags in his/her Twitter profile are not included on this list, even if they produce excellent, free content (eg, Dr. Amal Mattu, @amalmattu).

** Information current as of May 8, 2015.

*** Locations were taken directly from Twitter profiles.


  • Not too surprisingly, Dr. Scott Weingart of the EMCrit podcast leads the way, followed closely by the father of FOAMed, Dr. Mike Cadogan.
  • This list, although only a small subset, seems to be a microcosm of the larger FOAM community.
    • Worldwide representation from Australia to the UK to the USA.
    • A variety of healthcare professional representation including physicians, nurses, pharmacists, and EMS providers.
    • Subspecialties within Emergency Medicine are also well represented including critical care, ECG, medical education, pharmacy, radiology, toxicology, and ultrasound.
    • Importantly, only 3 women are featured on the list. We separately highlight the most followed #FOAMed women on Twitter.

Original July 14, 2014; Updated May 8, 2015

Bryan D. Hayes, PharmD, DABAT, FAACT, FASHP

Bryan D. Hayes, PharmD, DABAT, FAACT, FASHP

Leadership Team, ALiEM
Creator and Lead Editor, Capsules and EM Pharm Pearls Series
Attending Pharmacist, EM and Toxicology, MGH
Associate Professor of EM, Division of Medical Toxicology, Harvard Medical School
Bryan D. Hayes, PharmD, DABAT, FAACT, FASHP


EM Pharmacist & Toxicologist @MassGeneralEM | Asst Prof @HarvardMed/@EMRES_MGHBWH | @ALiEMteam leadership | Capsules creator, ALiEMU | President, ABAT | #FOAMed