Digital health & practice management · Physical therapy

HealthSpark

An AI back office built to let physical therapists open and run an independent practice without hiring office staff. Out of Y Combinator's Fall 2024 batch, with a two-person team and no funding round confirmed by any public record as of September 2026.

A claim, verified, a plan updated

On HealthSpark's own product walkthrough, a new patient named Daniel Kim books online. Within two minutes his Anthem PPO coverage is verified, a card is on file, and his intake form is signed before he ever sits down for a visit. The therapist records the session and an AI scribe drafts the note into treatment, evaluation and progress sections. A claim goes out with codes 97112 and 97110 attached, and Medicare pays $118.56 by electronic transfer six days later, with a Medicare supplement covering the remaining $29.64. Zero dollars outstanding.

That sequence, drawn from the company's own site, is the pitch in miniature: verification, documentation, billing and collections stitched into one AI-run pipeline, with the therapist doing the clinical work and little else.

The problem HealthSpark is built against

Y Combinator's summary of the company puts the problem plainly: “In a traditional clinic, office managers and billing staff handle everything outside of direct care: credentialing with insurers, scheduling, patient intake, claims, and compliance. For PTs who want to go independent, all of that work falls on their shoulders.” Physical therapists who want to set their own hours and keep more of what they earn have long faced a choice: absorb that administrative load themselves, or hire staff they cannot yet afford.

HealthSpark's answer is what it calls a “business in a box.” Therapists join a multi-state provider group, and the company says it handles credentialing, payer enrollment and payment setup so a PT can go in-network with major insurers under one application. The company's marketing also points to a second, patient-facing side of the business: state landing pages, including one for California, market direct telehealth physical therapy visits with a licensed Doctor of Physical Therapy, positioned as covered by insurance.

Two Carleton classmates

Stephen Grinich and Jonah Tuchow met as computer science classmates at Carleton College, according to a February 2026 write-up by Fondo, a tax and accounting vendor that covers startup launches. Grinich is described as a software engineer who previously worked at Rad AI and 98point6, and who holds a Master of Translational Medicine from UC Berkeley and UCSF, where he focused on health tech entrepreneurship at Berkeley Haas. A GitHub account under the handle sgrinich-98point6 is consistent with that reported history, though it does not independently confirm employment dates or role.

Tuchow is described in the same profile as an early engineer at Doctor on Demand, where he was a founding member of the revenue cycle management team, work Fondo credits with supporting the company's growth ahead of its 2021 merger with Grand Rounds. That merger, which created Included Health, is independently documented: Healthcare Dive reported in October 2021 that Doctor on Demand and Grand Rounds had combined into a single company. Tuchow's specific role at Doctor on Demand, however, comes only from the company's own telling as relayed by Fondo, not from an independent account of his employment.

Launch, then quiet

HealthSpark's Y Combinator company page and launch post describe the company as built on a custom EHR with an AI scribe and a multi-state provider network, deployed for Y Combinator's Fall 2024 batch. Y Combinator's platform dates the launch post to mid November 2024. Fondo's write-up of the public launch is dated February 9, 2026, roughly fifteen months later, describing the same product but with an expanded feature set: an AI receptionist that answers calls and books appointments, and text messaging tied to a HealthSpark phone number.

Since then, the public trail is thin. GetLatka, a data aggregator, estimated in an August 2026 update that HealthSpark reached about $220,000 in revenue by September 2025 with a two person team, up from zero revenue at the 2024 launch. Tracxn's company profile, last meaningfully updated around January 2025 with an employee count refreshed to mid 2026, lists the same two person team and separately claims the company raised $500,000 in a 2024 seed round. No press release, Form D or other independent source confirms that figure, and GetLatka's own funding section for the company says plainly that no funding has been reported. No named clinic or practice customer has surfaced in any source reviewed for this profile.

What is proven, and what is still claimed

Read plainly: HealthSpark is a very early, small company whose product claims come mostly from its own site and a handful of third party aggregators that do not agree with each other. There is no regulatory or grant record to check its clinical claims against, because its product is administrative software, not a medical device. The clearest public record available, the SEC's own filing index, shows no capital raise on file under the company's name.

What to watch

• Whether HealthSpark files a Form D or announces a funding round with named investors, which would resolve the gap between Tracxn's $500,000 claim and GetLatka's “no funding reported.”
• Named clinic or practice customers, and how many states its provider network actually covers.
• Growth beyond the two person team reported through mid 2026.
• Any independent press coverage; none was found as of September 2026, beyond a vendor blog post and data aggregator profiles.

In their words

Related companies

• Kips Health: Similar focus. A Y Combinator backed startup that automated remote therapeutic monitoring billing for physical therapy clinics, after starting out as a marketplace for booking physical
• Hippo Scribe: Similar focus. An ambient AI scribe built for physical, occupational and speech language therapists, not doctors
• Arctic Health: Similar focus. A New York startup pairing credentialing specialists with AI browser agents to get clinicians in-network faster
• Klarify: Similar focus. An AI agent named Klara that drafts therapy notes, treatment plans, clinical letters and insurance claims for therapists

Sources

1. Public recordSEC EDGAR full text search results for “HealthSpark”SEC EDGAR · Sep 25, 2026
2. IndependentHealthSpark: Empowering Physical Therapists to Go IndependentY Combinator · Nov 2024
3. IndependentHealthSpark Launches: Build an AI-Native Physical Therapy PracticeFondo · Feb 9, 2026
4. EstimateHealthSpark Revenue 2025: $220K Est. ARRGetLatka · Aug 10, 2026
5. EstimateHealthSpark company profileTracxn · accessed Sep 2026
6. Independentsgrinich-98point6 profileGitHub · accessed Sep 2026
7. IndependentDoctor On Demand, Grand Rounds rebrand as Included HealthHealthcare Dive · Oct 18, 2021
8. CompanyHealthSpark homepagejoinhealthspark.com · accessed Sep 2026
9. CompanyHealthSpark contact pagejoinhealthspark.com, Wayback Machine capture · Dec 15, 2025
10. CompanyHealthSpark California location pagejoinhealthspark.com · accessed Sep 2026