# Practice Owner Press

> An independent imprint publishing short, practical books for practice owners and office managers, on two shelves: Dental and Aesthetic. Each book covers one problem, labels every number (published, composite, synthetic or assumption), prints its formulas, and has a free, form-free companion page with worksheets and browser-only calculators.

Site: https://practiceownerpress.com
Author: Bill Eisenhauer, an engineer (programming for 45 years; a 40-year career building production software). Not a clinician.
Updated: 2026-09-26

## Books

- [The Inactive Patient List](https://practiceownerpress.com/books/inactive-patient-list/): dental; coming soon. Define, clean, segment and value the inactive patient list (first-year value only, net of patients who'd return anyway and outreach cost), then reactivate within hygiene capacity.
- [The Med Spa Money Map](https://practiceownerpress.com/books/med-spa-money-map/): aesthetic; published on Kindle (https://www.amazon.com/dp/B0H5G4KK3N). Six revenue leaks in a cash-pay aesthetic practice. The printed book links to https://alchemyinside.com/book (the author's consulting site).
- [Catalogue](https://practiceownerpress.com/books/inactive-patient-list/next/): published and planned titles.

## Tools

- [Inactive-patient value estimator](https://practiceownerpress.com/tools/inactive-patient-value-estimator/): per segment, incremental returners = reachable × return rate − patients × baseline rate; value per returner = first visit + repeat share × routine visit + open-plan share × still-valid share × acceptance × average plan; cost = reachable × (contact cost + staff minutes ÷ 60 × hourly cost); net = returners × value − cost. Hygiene hours are filled newest segment first. Totals only; runs in the browser.

- [Found Money Calculator](https://practiceownerpress.com/tools/found-money-calculator/): from The Med Spa Money Map. Inputs: annual revenue, average ticket, new patients per month. Rebooking gap = new patients/yr × 0.20 × 0.40 × $3,000; no-show gap = (revenue ÷ ticket) × 0.04 × ticket × 0.4; reactivation = new patients/yr (as the dormant list) × 0.12 × $3,000; membership = revenue × 0.07 × 0.25. Presented as ranges (30–36%, 30–36%, 12.5–16.7%, 75–100% of raw), rounded to $500. Benchmark estimates, not findings.

## Policies

- [Editorial policy](https://practiceownerpress.com/editorial-policy/): sources, number labels, AI use, corrections, conflicts. The author owns Alchemy Inside, a med spa consulting practice, listed with disclosure on [Services](https://practiceownerpress.com/services/).