Payer mix, Medicare rates, and the national labor market set much of the cost of anesthesia coverage. Hospital and group leaders still control consequential parts: which locations stay staffed, how coverage follows demand, and how call and late work are distributed. Those decisions affect both the subsidy and whether the schedule feels sustainable.
Key takeaways
- In a study of 236 first-year attending anesthesiologists at one academic medical center, 23.7 percent left within 365 days. Those who left had worked a greater share of weekends and late shifts, an association that does not by itself establish why they left (Podolski, Schaefer et al., presented at the 2025 IARS annual meeting).
- Anesthesiologists do not report the worst burnout in medicine. In the AMA’s 2025 data, their 39.2 percent burnout rate sits below the 41.9 percent physician average, yet their 42.2 percent intent to leave ranks second among specialties.
- The American Society of Anesthesiologists sets no post-call rest requirement, no maximum shift length, and no work-hour cap for practicing anesthesiologists. Resident schedules remain subject to separate ACGME work-hour rules.
- A 2003 analysis attributed $1.6 to $2.0 million in annual excess anesthesia labor cost at one university hospital and $1.0 to $1.4 million at another to inefficient operating room allocation, using compensation assumptions from that period (Abouleish, Dexter et al., Anesthesia & Analgesia).
What one academic center found about early departures
A team at Beth Israel Deaconess Medical Center examined 131,354 cases performed or supervised by attending anesthesiologists in their first year at the institution between 2005 and 2023. Of 236 attendings, 56 left within a year.
Patient characteristics, comorbidity burden, case severity, and case type did not differ meaningfully between those who left and those who stayed. “I hypothesized that the providers who left early either did cases that are generally considered boring or even extremely stressful ones,” said senior author Maximilian Schaefer. “But that wasn’t the case at all.”
The calendar variables did differ. The physicians who left worked a greater share of weekends, 6.1 percent of workdays against 4.7, and more non-regular hours, especially late shifts, at 13.3 percent against 7.4. In Schaefer’s summary, they worked about 30 percent more weekend shifts and nearly double the late shifts. “I think we have a scheduling system that tries to be fair, but obviously there are still variations in it,” he said.
Stephanie Jones, who chairs anesthesiology across North Shore University Hospital and Long Island Jewish Medical Center, interpreted the study as pointing toward schedule as a driver. She also described the tension between asking new staff to “pay one’s dues” and giving senior physicians no benefit for longevity. That tension merits review. This cohort does not prove causation.
The evidence has firm limits. It was presented at a national meeting, has not yet appeared as a peer-reviewed paper, and comes from one institution. The public report does not establish causation or tell us how contracts, compensation, FTE status, personal circumstances, or outside offers differed between groups. It is a useful warning to inspect undesirable-hour distribution, not a national attrition benchmark.
What department leaders say the fix is
Ruth Waterman, who chairs anesthesiology at UC San Diego Health, names call burden as “the single greatest driver of burnout” and recommends “protected post-call relief, equitable distribution and realistic staffing models.” That is an experienced chair’s assessment, not comparative research, but it identifies controls a department can act on.
Rita Agarwal, a clinical professor of anesthesiology at Stanford, adds the part that counts alone miss. “I am much happier covering an extra shift, call, or colleague if I had the opportunity to volunteer, or refuse, that particular assignment,” she said, “than if I was forced to take it.” Her point is that fairness depends on both the distribution and the process that produced it.
What can equity cost?
Distributing undesirable work evenly is not always the most productive staffing decision. Franklin Dexter and colleagues found that relieving anesthesiologists at the end of the day on the basis of equity can reduce group productivity (Perioperative Care and Operating Room Management, 2022). The result came from one academic department where anesthesiologists supervised a mixture of residents and nurse anesthetists, so it should not be generalized to every practice model.
The operational lesson is narrower: review equity together with cost and coverage, and define equity according to the group’s contracts. Raw shift counts are not enough. FTE, call tier, site, subspecialty obligations, compensation, shift intensity, and whether an assignment was voluntary all change what an equitable distribution looks like.
Where the cost actually sits
Personnel is the dominant cost, although the share varies by setting and staffing model. In one time-driven activity-based costing study of outpatient oncologic surgery, personnel accounted for 79 percent of anesthesia cost. A hospital stipend is better understood as the gap between the cost of required coverage and expected professional collections. Keep that subsidy calculation separate from the broader cost of clinical coverage to avoid combining booked expense with modeled vacancy impact.
Part of that gap is structural. The 2026 Medicare anesthesia conversion factor is $20.4976 for non-qualifying APM participants, a 0.88 percent increase, and $20.5998 for qualifying participants. Payer mix, federal rates, and the national labor supply are not scheduling decisions. Their financial effect still depends on the coverage model, commercial contracts, provider mix, and locations the hospital requires the group to staff.
The controllable part has carried a dollar figure for twenty years. Abouleish, Dexter and colleagues studied two university hospitals. Using then-current national compensation assumptions, they estimated $1.6 to $2.0 million in annual excess anesthesia labor cost at Hospital A and $1.0 to $1.4 million at Hospital B. The excess came from operating room allocation and case scheduling based on “tradition and surgeon convenience” rather than efficiency. The figures are not 2026 benchmarks, but the mechanism remains relevant: a staffed location can keep generating labor cost after its productive work ends.
Two of Dexter’s later findings narrow the target. Refining service-specific staffing two to three months before surgery is the step that moves cost; shaving turnover times between cases barely does (McIntosh, Dexter, Epstein, Anesthesia & Analgesia, 2006). When an unused block is released matters less than getting the allocation right in the first place (Dexter, Macario, Anesthesia & Analgesia, 2004). The same distinction between arrivals and active workload matters in emergency department coverage: paid capacity should follow a local demand model, not one visible clock.
What to measure
The numbers that predict this rarely sit on the dashboards a group already has.
| Metric | Why it matters |
|---|---|
| Distribution of weekends, nights, and late shifts, normalized for FTE, contract, site, intensity, and voluntary assignments | Shows whether undesirable work is concentrated without treating every clinician or shift as interchangeable |
| Post-call relief scheduled versus taken | Whether “protected recovery” is real or aspirational |
| Staffed anesthetizing-location hours against anesthesia time, ASA units, and demand by site, day, and hour | Shows where paid capacity and productive work diverge without treating case time as the whole workload |
| Subsidy per staffed anesthetizing location, coverage hour, and ASA unit | Makes comparison possible while preserving differences in hours, volume, payer mix, and case complexity |
Frequently asked questions
Will better scheduling reduce our subsidy? It can reduce the gap between staffed coverage and demand, and it can make undesirable work more transparent and consistent with group rules. It does not change payer mix, the Medicare conversion factor, or national labor supply. It also cannot reallocate operating room blocks unless hospital perioperative governance acts on the data.
How many concurrent rooms can one anesthesiologist cover? The one-to-four figure is a Medicare payment rule for medical direction, not an ASA safety standard. To bill medical direction, the physician must direct no more than four concurrent services and complete and document the required activities. More than four is medical supervision under Medicare and pays differently. State scope-of-practice law, CRNA opt-out status, teaching rules, payer contracts, hospital policy, and the needs of the cases also affect the model. The ASA’s Statement on the Anesthesia Care Team sets no universal numeric ratio.
Does the ASA require rest after a night on call? Not as a national numeric rule for practicing anesthesiologists. The ASA’s Statement on Fatigue supports fatigue mitigation but sets no maximum shift or minimum post-call interval. Employers, medical staffs, facilities, and states may impose additional requirements, so the absence of an ASA number does not mean the practice operates without constraints.
Is call burden really the driver, or is this just burnout? The Beth Israel Deaconess data show an association between early departure and the share of weekends and late work in one cohort. They do not show that call burden caused the departures or that burnout mediated them. Treat the result as a reason to examine your own distribution alongside compensation, contracts, FTE, schedule control, and exit data.
Where to start
Pull the distribution before changing the schedule. Review weekends, nights, and late shifts over a full year, normalized for FTE, contract, compensation, site, and voluntary assignments. If new attendings carry more undesirable work after those adjustments, investigate it with retention and exit data rather than assuming the schedule caused the difference. Physician replacement estimates often exceed $500,000 when recruitment, onboarding, and lost billings are included, but the amount varies substantially by specialty and organization.
Then map staffed anesthetizing-location hours against anesthesia time, ASA units, and demand by site and hour. Flag locations that repeatedly carry paid capacity after productive work ends, while accounting for turnover, induction, emergence, standby obligations, OB, and NORA. Moving block time is a perioperative governance decision involving the hospital and surgeons, not a scheduling toggle.
YouShift builds anesthesia schedules from a group’s own rules, so call, weekend, and late-shift distribution is balanced across clinicians before anything gets published, and every swap, absence, and open shift afterward is checked against those same rules instead of eyeballed. It shows what coverage costs by site, by clinician type, and by shift type before the month closes, and those hours feed compensation directly. More than a thousand physicians schedule on it across the United States and Europe.
See your call distribution matched against actual demand. Tell us your sites and case pattern and we will build the view.
Sources
-
Podolski, Schaefer et al., “Call Burden, Not Case Type, Drives Early Attrition in Anesthesia,” presented at IARS 2025. Anesthesiology News | OR Management News
-
AMA, “Physician Burnout Rate Continues Decline,” 2025. ama-assn.org
-
ASA, “Statement on Fatigue,” guidance for practicing anesthesiologists. asahq.org
-
Abouleish, Dexter et al., “Staffing and Scheduling Based on OR Efficiency,” Anesthesia & Analgesia, 2003. PubMed
-
Jones S., “To Take Call or Not, That Is the Question,” Anesthesiology News, July 2023. anesthesiologynews.com
-
Prielipp R., “Production Pressure and Anesthesia Professionals,” APSF Newsletter, 2020. apsf.org
-
Waterman & Agarwal, “The Retention Breakthrough Anesthesia Needs,” Becker’s ASC Review, March 2026. beckersasc.com
-
Dexter, Epstein, Marian, “Equity in the Assignment of End-of-Day Cases,” Perioperative Care and Operating Room Management, 2022. ScienceDirect
-
ASA, 2026 Medicare Conversion Factors. asahq.org
-
ASA, CMS Final Rule Response, October 2025. asahq.org
-
McIntosh, Dexter, Epstein, “Impact of Service-Specific Staffing on OR Efficiency,” Anesthesia & Analgesia, 2006. PubMed
-
Dexter, Macario, “When to Release Allocated OR Time,” Anesthesia & Analgesia, 2004. PubMed
-
ASA, Statement on the Anesthesia Care Team. asahq.org
-
French et al., “Value Based Care and Bundled Payments: Anesthesia Care Costs for Outpatient Oncology Surgery Using Time-Driven Activity-Based Costing,” 2016. PMC
-
AMA, “How much physician burnout is costing your organization.” ama-assn.org