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Medical Practice input evidence register

45 numeric input paths with their assumptions, calculation bases and cited sources.

Case updated October 2, 2026. This technical appendix accompanies the complete case methodology and source register.

Dataset use notice: no Creative Commons license or DOI is asserted. Referenced material remains subject to its publisher’s terms.

A linked reference can support scope without confirming an exact forecast. Assumption entries identify values that still require local validation. Each field path identifies an input in the common business record.

  • Model assumption

    All budgets and range endpoints are authored. Four listed FusionONE+ tables at $5,971.42 give a $23,885.68 pre-freight component anchor within the $75,000 equipment allowance; the remaining equipment and all installation, fit-out, IT, setup and reserve amounts need local bids. The base $450,000 reserve is checked privately against the shared monthly ramp deficit, a 45-day mature-revenue receivable allowance and residual contingency; it is not a quoted financing requirement.

    capital.total · capital.low · capital.high · capital.items.0.amount · capital.items.1.amount · capital.items.2.amount · capital.items.3.amount · capital.items.4.amount · capital.items.5.amount · capital.items.6.amount · capital.items.7.amount

  • Model assumption

    Authored completed-encounter scenario. One physician and one NP each complete 14 visits per average operating day at independently selected realized fees of $185 and $155, giving $170 blended. HonorHealth is one observed self-pay schedule, not evidence for the local payer mix or these exact fees. Year one uses the shared 40% starting volume and six-percentage-point monthly ramp; years two/three use 28 visits/day and years four/five 30/32. No support-role, external laboratory or uncontracted specialist revenue is added.

    forecast.years.0.revenue · forecast.years.1.revenue · forecast.years.2.revenue · forecast.years.3.revenue · forecast.years.4.revenue

  • Model assumption

    Authored 12% variable share: 7% clinical consumables and routine in-scope test costs, plus 5% variable billing and payment cost. Not a vendor quote or national benchmark. Outside laboratory work billed directly by others is excluded from both sales and practice costs; this share must be rebuilt if services change.

    forecast.years.0.costOfSales · forecast.years.1.costOfSales · forecast.years.2.costOfSales · forecast.years.3.costOfSales · forecast.years.4.costOfSales

  • Model assumption

    Authored base wages: physician owner $250,000; NP $140,000; two medical assistants $48,000 each; manager/billing lead $64,000; receptionist $45,000. Total $595,000 plus selected 20% employer-cost allowance and $30,000 relief equals $744,000. BLS May 2025 occupation medians provide context, not local quotes or a complete benefits schedule. Later-year cost increases fund support/relief workload; no extra permanent clinician is assumed.

    forecast.years.0.payroll · forecast.years.1.payroll · forecast.years.2.payroll · forecast.years.3.payroll · forecast.years.4.payroll

  • Model assumption

    Authored base annual overhead $180,000: $72,000 rent/CAM, $18,000 utilities/cleaning, $24,000 insurance, $24,000 software/IT, $18,000 outreach, $12,000 professional/compliance support and $12,000 maintenance/miscellaneous. These are budgeting allowances, not quoted premises, insurance or vendor rates. Later-year overhead rises with workload.

    forecast.years.0.occupancyAndOther · forecast.years.1.occupancyAndOther · forecast.years.2.occupancyAndOther · forecast.years.3.occupancyAndOther · forecast.years.4.occupancyAndOther

  • Model assumption

    All calculator inputs and sensitivity bounds are authored, not observed market ranges. Base: $170 per completed visit, 28 total daily visits, five days, 88% contribution and $77,000 monthly fixed payroll/overhead. The practical ceiling is 36 visits/day across both clinicians; staffing and room calendars must verify it. A 40% initial share rises six percentage points monthly. The same shared ramp and mature calculation reconcile to years one and three within rounding; collection delays remain a separate cash requirement.

    unitEconomics.driver.model · unitEconomics.driver.low · unitEconomics.driver.high · unitEconomics.volume.model · unitEconomics.volume.low · unitEconomics.volume.high · unitEconomics.daysPerWeek.model · unitEconomics.daysPerWeek.low · unitEconomics.daysPerWeek.high · unitEconomics.fixedCostsMonthly · unitEconomics.contributionMargin · unitEconomics.ramp.startShare · unitEconomics.ramp.stepPerMonth · unitEconomics.ramp.horizonMonths

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