The CT surgeon shortage is real. The retention math is worse.

HRSA's December 2025 projections still flag cardiothoracic surgery as a top-shortfall specialty. Here is what the most recent published data says programs should actually do about it.

HRSA's National Center for Health Workforce Analysis released updated physician projections in December 2025, covering 2023 through 2038. Cardiothoracic surgery remains one of the specialties with the most pronounced supply-demand gap, and the Society of Thoracic Surgeons continues to flag a projected 31% shortfall in the specialty over the projection horizon. Against that backdrop, replacing a surgeon who leaves early can take considerable time.

The most recent published evidence (Heart Surgery Forum 2025; STS 2025 compensation update; MedAxiom 2025 survey) points to a small number of drivers of early-career attrition that programs can actually influence. None of them are new.

1. The pipeline is the constraint

Integrated 6-year (I-6) and traditional CT training programs together graduate a relatively small cohort per year. The Heart Surgery Forum's 2025 review ("The Current and Future Landscape of Cardiothoracic Surgery in the United States") lays out the same point in current terms: training output is not catching up to demand, and the surgeons you hire next year already exist today and are fully scoped out by competing programs.

2. Call coverage is not getting easier

An aging population, rising case complexity, and a flat-to-shrinking surgeon supply mean per-surgeon call burden trends up unless programs add coverage. The Heart Surgery Forum 2025 landscape paper makes this explicit, and STS workforce advocacy continues to anchor the same conclusion. Candidates raise call frequency and predictability often in conversations about leaving a program.

3. Compensation is necessary, not sufficient

STS's January 2026 readout of the 2025 Compensation and Member Practice Survey shows continued upward pressure on CT surgeon compensation across practice types, with notable variation by setting (academic vs. private vs. integrated health system) and by subspecialty. The same survey makes clear that comp alone does not explain retention: practice setting, productivity model, and call structure interact with it.

4. The team around the surgeon matters

MedAxiom's 2025 Cardiovascular Provider Compensation and Production Survey (released October 2025) emphasizes that team design, APP-to-physician ratios, subspecialty mix, and care-model architecture materially affect program performance and are increasingly framed as part of the answer to workforce shortage. Candidates frequently describe stable APP and perfusion teams as contributing to a more predictable workday.

5. Niche development is a retention lever

The Heart Surgery Forum 2025 landscape paper and the STS 2025 compensation readout both point to subspecialization (structural, robotic thoracic, transplant, complex aortic) as a workforce-distribution issue and a personal career driver. Programs that can describe a realistic path toward a subspecialty focus tend to have an easier time in recruiting conversations.

What this means for hiring

These are themes that come up repeatedly in candidate conversations: predictable call, deliberate team design, compensation informed by published surveys, and a realistic path toward a subspecialty focus. Programs decide how to weigh them, and the sources below are worth reading directly.