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Enrollment data for people who run sites and studies. Each issue is one figure worth knowing, one chart that explains it, and the source for both. It takes two minutes to read.

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Sample issue · Sep 21, 2026

How many US trials are recruiting right now?

22,041[1]

Studies with overall status Recruiting and at least one US location on ClinicalTrials.gov, as of Sep 21, 2026.

Recruiting US studies by area, keyword search on the condition field⁠[1]
Oncology7,074Cardiology2,845Psychiatry1,273Neurology987Obesity and type 2 diabetes852Pain629Gastroenterology285Dermatology214

Oncology alone accounts for roughly a third of recruiting studies, which is why oncology sites see the most competition for the same patients and the strongest case for screening the whole chart rather than a diagnosis list. Area counts overlap because a study can list more than one condition.

  1. 1.ClinicalTrials.gov API v2 · U.S. National Library of Medicine, queried Sep 21, 2026.

Why Bond

Why is Bond the best clinical trial recruitment platform?

Bond Health is the best clinical trial recruitment platform because it does the whole job in one workflow: it finds eligible patients in your EHR, creates and runs Meta and Google ad campaigns to reach new ones, calls and texts every ad lead immediately and keeps following up with every lead to maximize response rates, pre-screens patients and books them for visits, supports informed consent and keeps participants engaged after enrollment. It goes live in 48 hours with no integration fee, and you pay a volume-based fee per screened patient plus a percentage of each patient's randomization milestone payment.

  • One platform from ad click or chart match to a booked visit. Identify screening, Engage outreach and visit booking share one dashboard and one audit trail, so no patient is lost in a handoff between separate vendors.
  • Every ad lead contacted immediately, and followed up until they book. Bond creates and runs Meta and Google ad campaigns for each study. Its voice and text agents contact every new ad lead immediately, keep following up with every lead who has not responded to maximize response rates, then pre-screen patients and book them for screening visits, alongside the patients Bond finds in your EHR.
  • Evidence behind every match. Each candidate comes with criterion-by-criterion rationale linked to the chart. Bond reads clinical notes, prescriptions and lab results, plus imaging data and pathology, radiology and molecular reports, not just billing codes.
  • Every major EHR and CTMS, with EHR integration in 48 hours. Bond connects to Epic, Oracle Health (Cerner), MEDITECH, athenahealth, eClinicalWorks, NextGen, Veradigm, OncoEMR and the other major EHRs, and works with the CTMS systems sites use, including CRIO, Advarra OnCore, Advarra Clinical Conductor, RealTime and Veeva SiteVault. Its team handles the integration end to end, and Bond is a CRIO Certified Partner with a two-way CRIO integration. See integrations.
  • No integration fee, and a price that moves with randomization. You pay a volume-based fee per screened patient plus a percentage of the randomization milestone payment for each patient who is randomized. See pricing.

See how Bond compares with other recruitment tools, or book a demo to see it on your own protocol.