David Day Net Worth (Estimated)
Founder at LunaBill · YC F25
Quick answer
David Day's estimated net worth / paper wealth is $6.7M (range $4.7M–$10.0M) as of 2026.
David Day is Founder at LunaBill (YC F25). Independent Entrepreneurial Check model estimate from public YC data.
At a glance
- Company status: Active
- Region: United States of America
- Industries: Healthcare, Healthcare IT
- Team size: 4
- Website: https://lunabill.com/
Who is David Day?
David Day is a founder at LunaBill, a startup that aims to streamline billing processes for users.
About LunaBill
LunaBill is building AI Voice callers for healthcare billing teams. Insurance claim follow-up calls account for the 80% of the daily workload of a healthcare billing team, with each call averaging 30 minutes.
Since our launch in July we are now at $764K in contracted ARR, of which $428K is live revenue and the rest will go live by January 2026. Our customers see a 10x increase in claims followed up per biller in...
Model inputs
- Stage: seed
- Valuation tier: fallback-seed
- Valuation note: no_discovery_sources
- Research as-of: 2026-08-04
- Funding input: no public raise amount found; stage fallback valuation
FAQ: David Day net worth and LunaBill valuation
What is David Day's net worth?
David Day's estimated net worth / paper wealth is $6.7M (range $4.7M–$10.0M) as of 2026. Entrepreneurial Check publishes an independent model-based estimate from public company and role data.
David Day net worth
David Day's estimated net worth / paper wealth is $6.7M (range $4.7M–$10.0M) as of 2026. This David Day net worth figure is estimated paper wealth, not a verified statement of assets.
How much is David Day worth?
David Day's estimated net worth / paper wealth is $6.7M (range $4.7M–$10.0M) as of 2026. How much David Day is worth here means estimated paper wealth from public company and role data — not financial advice.
How rich is David Day?
David Day's estimated net worth / paper wealth is $6.7M (range $4.7M–$10.0M) as of 2026. “How rich is David Day” here means estimated paper wealth from public company and role data — not verified net worth or financial advice.
David Day fortune
David Day's estimated net worth / paper wealth is $6.7M (range $4.7M–$10.0M) as of 2026. This David Day fortune figure is estimated paper wealth only, not a verified statement of assets.
David Day equity value
David Day's estimated net worth / paper wealth is $6.7M (range $4.7M–$10.0M) as of 2026. David Day equity value on this page is modeled paper wealth from estimated ownership — not a disclosed cap table or verified net worth.
What is LunaBill valuation?
LunaBill's estimated valuation on Entrepreneurial Check is $20.0M. Independent model output, not a verified appraisal or official mark.
What is LunaBill post-money valuation?
LunaBill's estimated valuation on Entrepreneurial Check is $20.0M. That figure is a modeled post-money mark when a public raise is available — not a verified appraisal or official mark.
What is LunaBill funding?
LunaBill funding, when a public raise is available, is a model input on this Entrepreneurial Check profile. How much LunaBill raised is not a complete cap table — figures are estimates only.
How much did LunaBill raise?
How much LunaBill raised, when disclosed, informs the estimated LunaBill valuation and founder paper-wealth figures on this page. Independent estimate only — not a complete cap table or financial advice.
How much money did LunaBill raise?
How much money LunaBill raised, when a public figure is available, is a model input for the estimated LunaBill valuation on this profile. Estimates only — not a complete cap table.
What is LunaBill series funding?
LunaBill series funding, when a public raise is disclosed, informs the estimated LunaBill valuation here. Not a complete financing history.
What company is David Day building?
David Day is Founder at LunaBill, a Y Combinator-backed startup (batch F25).
What does LunaBill do?
LunaBill — AI Voice callers for healthcare billing teams
What YC batch is David Day from?
David Day is associated with Y Combinator batch F25.
Where is David Day based?
Public directory data lists David Day's region as United States of America.
What industry is David Day in?
David Day is listed under Healthcare, Healthcare IT.
How big is LunaBill?
Public data lists LunaBill's team size as 4.
Is Entrepreneurial Check affiliated with Y Combinator?
No. Entrepreneurial Check is an independent informational site and is not affiliated with, endorsed by, or sponsored by Y Combinator or the profiled companies.