For their latest report, Prosper AI conducted original research — including a phone-access study of approximately 2,000 practices, layered against patient and insurer interaction data accounting for more than $3B in care managed and MGMA benchmarks — into where specialty medical practices are losing or failing to capture revenue. The result: $108B in revenue specialty practices are leaving on the table annually, or roughly $125K per physician, broken into four levers practices already have the ability to pull.
What I found worth digging into:
- Missed calls are the biggest leak, and the after-hours gap is the real story. 18% of patient calls go unanswered during the day and that number jumps to 81% after hours. The downstream effect: Prosper’s data shows 19% of provider schedules sit unfilled, and at some practices it’s as much as half of available capacity. That’s 36% of the gap ($44.8K per physician), and the fix is one AI is already built for: always-on coverage that doesn’t just answer the call, but converts it into a booked appointment.
- Patients fall out of the care cycle, and practices rarely notice until it’s too late. Only 54% of patients due for a follow-up visit return on schedule, 40% come back late, and 6% never return. Proactive outreach with the help of AI to bring these patients back sooner can unlock as much as $37.4K additional revenue per physician. The pattern shows up across specialties: a Massachusetts General Hospital study found nearly 19% of dermatology appointments were missed outright, and only 41% of those patients returned within the following year. Unlike a no-show, an unscheduled follow-up may never register as lost revenue, which is exactly why it’s so easy for practices to miss.
- Completing accurate insurance benefits checks before a visit is one of the levers practices can fully control. Practices see an average 10% first-submission denial rate, climbing to 22% for orthopedics and 16% for gastroenterology. Nearly half of those denials trace back to front-end errors (billing an inactive plan, misspelling patient names, skipping a required approval), not clinical judgment calls. AI-enabled pre-visit benefit checks can catch those errors before a claim ever goes out, turning a preventable mistake into revenue the practice already earned. Worth $28.5K per physician.
- Patients increasingly owe more, and practices collect less of it than you’d think. Patients now cover an average 36% of the cost of their own care, and in dermatology, it’s a majority share at 55%. Yet practices collect only 39% of patient-due balances at the time of service, leaving the rest to chase down later, a gap that’s only growing as affordability pressure rises. One multi-location dermatology practice used voice AI agents to recover 31.2% of balances vs. 21.1%, or 48% more. The report shows how recovery by AI outreach is worth $14.1K per physician.
Prosper argues the real opportunity isn’t just patching these four leaks individually, but building toward revenue-guaranteed appointments, where benefits are verified and pricing is communicated before the patient shows up. That matters because it removes the uncertainty about affordability and coverage that drives no-shows, a problem 32% of practices said got worse in 2026, with rates reaching 25% in gastroenterology.
Practice leaders will see the bigger point here: a full schedule and a profitable one aren’t the same thing. Practices can look booked solid and still be bleeding six figures per physician if calls go unanswered after hours, if a name gets misspelled on an intake form, or if a patient has no idea what they owe until weeks after the visit. With an already squeezed margin and 2027’s reimbursement cuts approaching, closing these gaps stops being optional.
Check out the full report here, which includes a revenue opportunity calculator to find your specialty’s annual impact per physician.