Summary
What do they do? On-Site Dental Care Foundation Inc., EIN 77-0495262, provides mobile dentistry primarily in Alameda and Santa Clara counties. The fiscal year ending June 2025 return reports 1,101 unduplicated patients over 231 service days. Its population includes homeless people, migrant workers, low-income families, LGBTQ+ people and people with HIV/AIDS. It is distinct from Health Mobile and Dentists on Wheels. More
Why this approach interests us
- Established mobile dentistry can complete restorative care for people who otherwise wait for treatment.
Our main reservations
- The favorable 10% world supplies 90.6% of signed expectation. Existing public funding and an unmeasured completed-treatment mix weaken additionality.
What do you get for your dollar?
Signed prior-weighted estimate: $5,322,482 per 10 Bay QALYs, or 0.018788 Bay QALYs per $10,000. This is not a clinic-measured QALY result. Inspect the model, assumptions and scenarios.
- bay whole-gift estimate
- $5,322,482 — Per 10 modeled QALYs; partial finite pain-related health.
- whole fy2025 expense
- $1,157,224 — All program/support cost; verified original return.
- dated patients
- 1,101 unduplicated — 231 service days; not completed plans or visits.
- public grants
- $746,848 — Funded baseline; not subtracted from whole cost.
1. What do they do?
On-Site Dental Care Foundation Inc., EIN 77-0495262, provides mobile dentistry primarily in Alameda and Santa Clara counties. The fiscal year ending June 2025 return reports 1,101 unduplicated patients over 231 service days. Its population includes homeless people, migrant workers, low-income families, LGBTQ+ people and people with HIV/AIDS. It is distinct from Health Mobile and Dentists on Wheels.
Whole-organization resource boundary
All costs retained, not only the most attractive procedure or grant.
Patients to completed symptomatic care
1101 unduplicated patients × completed restorative share × symptomatic share; no 7500-visit multiplier.
Finite benefit beyond alternative care
Relief success × utility × expected incremental duration.
Signed whole-gift additionality
Apply cash response and Bay fraction; subtract independent harm.
Scope of this review. Only finite symptomatic dental relief is quantified. Prevention, chewing and denture function, tooth retention, education, employability and other benefits remain unquantified, with all costs retained. No lifetime, mortality, cardiovascular or sepsis bonus is added. Donated labor and partner capital are unknown resources, not free resources.
2. Monitoring and information sharing
1101 unduplicated patients / 231 days
Original FY2025 Form 990, Part III. Actual reported patients, but no completed-procedure or pain-resolution counts.
Our assessment. Do not use undated website figures of 1401 or 1500 patients or 7500 visits as FY2025 outcomes. The provider's counterfactual claim is not causal proof.
Sunnyvale program, not whole organization
Public funder application, June 2025. 200000 recommended renewal; 330 people, 1300 services and 90% completed plans are targets. Narrative figures of 75% retention and 90% improved oral hygiene are provider reports, not controlled pain outcomes.
Our assessment. 99% of metrics met is not 99% of patients benefiting. Do not multiply all patients by hygiene or retention as QALYs.
65 adults
Prospective nonrandomized Swedish root canal versus extraction study. No significant intergroup QALY difference; approximately .83 QALY each over one year.
Our assessment. Both received treatment; the null is not a care-versus-no-care null. Before-and-after utility changes do not validate a .05 causal gain. No organization-specific utility or untreated duration was measured.
Medi-Cal members, not measured clinic insurance case mix
Current DHCS benefit notice. Some adult members lose full dental benefits July 2026; members under 19 retain full benefits.
Our assessment. Coverage is not an actual timely appointment, but low income or homelessness does not prove there is no covered alternative.
3. Qualitative assessment
Established mobile dentistry can complete restorative care for people who otherwise wait for treatment.
Key reservations
- Completed plans and painful case mix are unmeasured despite the unduplicated patient count.
- Whole-gift funding response is unknown amid public contracts and paid-clinician constraints.
- Website counters are undated and inconsistent; the dated filing takes precedence.
- Finite utility and duration priors dominate, not clinic-measured QALYs.
- No complete societal resource valuation; non-pain benefits remain unquantified.
- No current donation checkout verified; donation URL omitted.
- The official homepage links to an iATS donation checkout, but that checkout could not be fetched. Its operation was not verified, so no donation URL is advertised.
Benefits not included in our estimate
- Lifetime tooth preservation
- Mortality/sepsis/cardiovascular prevention
- Employment or confidence bonus
- Screening-only visits as health
- Unmeasured non-pain function
4. What do you get for your dollar?
$5,322,482 per 10 Bay QALYs
Dated whole cost and patient count anchor scale. Treatment completion, symptoms, utility, duration and funding response remain priors. The donor estimate is not a complete societal resource price.
A better life is our comparison unit of 10 additional quality-adjusted life years (QALYs), potentially spread across people. These are uncertain estimates, not measured returns or verified donation offers.
How we calculate the estimate
Signed finite Bay dental health: gift / whole expense × 1,101 unduplicated patients × funding response × (completed restorative share × symptomatic share × successful relief × utility gain × incremental years − harm per patient) × Bay share
0.018788226596039313 Bay QALYs / $10000
Model inputs and assumptions
- Whole fiscal-year expense
- 1157224 (range: Prior FY: 1331040). Original whole cost, including 1098847 program + 55836 management + 2541 fundraising. No selective 200000-grant denominator. High accounting.
- Unduplicated annual patients
- 1101 (range: Dated return, not undated website figure of 1500). Original 1101 unduplicated patients, 231 days. No additional deduplication discount applied. A patient is not a completed treatment plan or a separate pain episode per visit. Moderate; provider-reported.
- Completed restorative share
- .65 (range: .4–.9). Excludes screening, cleaning-only and incomplete courses. 90% completion in the public application is a target, not observed whole-organization completion. Very low.
- Symptomatic share among completed care
- .5 (range: .3–.7). Not all restorative care treats active pain; no clinical-mix counts supplied. Very low.
- Successful symptomatic relief
- .85 (range: .6–.95). Analyst prior; treatment-plan completion and hygiene improvement are not pain resolution. Very low.
- Utility difference while pain relief is incremental
- .05 (range: .025–.10). Judgment, not observed clinic EQ5D. An active-comparator study cannot identify the causal effect versus no treatment. Very low.
- Expected incremental painful time
- .25 year (range: .05–.5 year). Averages across patients with prompt alternatives or zero benefit until equivalent care or resolution of need. Not tooth life or 3 extra months for every person. Very low.
- New-gift capacity response
- .3 (range: 0–.6). Separate cash response; public contracts, paid clinicians, appointments and short-term liabilities constrain what additional cash does. Very low.
- Bay fraction
- .98 (range: .95–1). Primary service counties Alameda/Santa Clara support a high Bay prior; residence was not censused. Moderate footprint.
- Independent harm Q per additional patient
- .0002 (range: 0–.003). Hypothetical complications/access burden not already netted in utility. No observed harm rate. Very low.
$10,000 cap; no linear $100,000 assurance
- funding_null: Not defined per 10; weight 0.2. Bay Q 0; full world coefficients retained in results.
- clinical_null: Not defined per 10; weight 0.15. Bay Q 0; full world coefficients retained in results.
- harm: Not defined per 10; weight 0.05. Bay Q -0.008391478227205795; full world coefficients retained in results.
- cautious: Not defined per 10; weight 0.25. Bay Q -0.0003705760509633399; full world coefficients retained in results.
- central: $10,989,604 per 10; weight 0.25. Bay Q 0.009099509202626284; full world coefficients retained in results.
- favorable: $587,352 per 10; weight 0.1. Bay Q 0.17025567219483867; full world coefficients retained in results.
- one_month: Cap incremental painful time at one month. $33,980,553 per 10; Bay Q 0.0029428596608132907.
- half_utility: Half utility. $11,074,976 per 10; Bay Q 0.009029364662491875.
- half_completion: Half completed restorative share. $11,074,976 per 10; Bay Q 0.009029364662491875.
- half_symptoms: Half symptomatic share. $11,074,976 per 10; Bay Q 0.009029364662491875.
- prior_cost: Prior FY2024 whole expense. $6,121,923 per 10; Bay Q 0.016334735796350974.
- full_response: Full cash response. $2,518,880 per 10; Bay Q 0.03970018933780323.
- double_resources: Double expense: hypothetical unpriced resources. $10,644,964 per 10; Bay Q 0.009394113298019657.
Uncertainty. Subjective scenario mass below $1M per 10 QALYs: 0.1; below $100k: 0. These are not calibrated probabilities. Excluding and renormalizing the favorable world gives $51,059,213 per 10. Priors were locked before first evaluation; no result tuning.
5. Funding and previous grants
HOLD a giving recommendation pending current cash-created capacity and counterfactual clinical outcomes. Reportability does not mean favorable economics.
FY2025 revenue of $1,233,793 includes $746,848 in government grants and $137,137 in program revenue. Retain all $1,157,224 of expense, including $342,817 in staff costs and $349,950 for contracted dentists: this is not an all-volunteer model. Assets are $418,219 and liabilities $281,532; unrestricted net assets are $91,687 and restricted net assets $45,000. Cash and savings lines are blank, not independently verified liquid-cash zeros. Schedule L reports a loan TO the organization from managing director Cheryl Walter for short-term cash flow: original principal $23,195, balance $4,000. The return marks no default, no board/committee approval and no written agreement. These disclosure facts require governance review but do not establish misconduct or cash-created treatment capacity. Public contracts are baseline; no current unfunded slot is verified. Complete donated-resource opportunity cost remains unknown.
This review does not establish a verified marginal funding offer or a complete history of grants.
We have not verified a suitable donation route for this reviewed activity. Confirm the legal recipient and intended allocation before donating.
6. Sources
- Original FY ending June 2025 Form 990. IRS via ProPublica. Primary. Published: Submission 2026-05-14; retrieved: 2026-09-11.
- Original Schedule O. IRS via ProPublica. Primary. Published: Submission 2026-05-14; retrieved: 2026-09-11.
- Original Schedule L. IRS via ProPublica. Primary. Published: Submission 2026-05-14; retrieved: 2026-09-11.
- Official services and program overview. On-Site Dental Care Foundation. Primary. Published: Undated; retrieved: 2026-09-11.
- June 17 2025 board packet, PDF index 248 / printed 249. El Camino Healthcare District. Primary. Published: 2025-06-17; retrieved: 2026-09-11.
- Prospective controlled dental economic cohort. Wigsten et al.. Primary. Published: 2023-06-29; retrieved: 2026-09-11.
- Medi-Cal dental benefit changes. California DHCS. Primary. Published: 2026-04-27; retrieved: 2026-09-11.
Annual expenses: years and sources
Average annual expenses (three consecutive fiscal years): $1,274,430. Organization size is separate from the modeled cost-effectiveness of a donation.
On-site Dental Care Foundation Inc
Form 990/990-EZ reported whole-entity expenses; includes program, administration and fundraising costs, but excludes any costs netted against revenue.
Latest original return and prior-year comparative combined with earlier filing data.