Health IT & clinical documentation · Emergency medical services
CareSwift
A Y Combinator backed startup building an AI narrative assistant for ambulance crews, aimed at cutting the time medics spend charting after every call. It launched in 2025 and is still working out how much of the ePCR it can touch.
Three friends from Queens
Brian Weigand, John Paul Mussalli and Jonathan Zero met as students at Archbishop Molloy High School in Queens. Weigand and Mussalli went on to St. John's University as computer science majors, Zero to the University of Scranton. Weigand also worked as an EMT in New York City's 911 system, and that job is where CareSwift started.
“Documentation was always a pain point for me,” Weigand told St. John's University in July 2025. “Without CareSwift, EMTs must complete about 100 check boxes and type 600-word narratives as part of their ambulance reports, which often take 30 to 45 minutes. I wanted to respond to more calls.”
The problem
Every ambulance run ends with paperwork. Crews fill out more than 100 checkboxes and write a narrative of several hundred words, on top of treating and transporting a patient. Mussalli, CareSwift's chief operating officer, put the arithmetic to St. John's University this way: “On a 12-hour shift, EMTs are spending three to four hours just writing and charting.” He went on: “What that means is, they cannot respond to calls. Also, if you have a long call then immediately must go to another one, you cannot quickly document the first call. What ends up happening is patient outcomes are worse, information is lost, and there are insurance denials that come at the cost of the patient and the insurance company.”
Incomplete documentation is also a billing problem: EMS agencies bill insurers per transport, and gaps in the patient care report are a common reason claims get denied. CareSwift's pitch is that a real time assistant catches those gaps before the chart is finished rather than after a denial comes back.
Y Combinator and a cross country drive
The three applied to Y Combinator with CareSwift as a side project. They were accepted in May 2025, received $500,000 in funding, and drove from New York to San Francisco over seven days to join YC's Summer 2025 batch. St. John's University reported the founders working about 100 hours a week that summer, with Weigand and Mussalli taking a leave of absence from school for the fall semester.
“We are honored to be a part of Y Combinator,” Mussalli said. “YC has a track record of launching extraordinary companies. It has distinguished itself as the best startup accelerator in the world.”
VIC director James M. Kinsley called the team its most successful founders since it opened in January 2024: “CareSwift is a fantastic example of what can be achieved when a great idea meets hard work and persistence.”
Ahead of YC's September 9, 2025 Demo Day, Mussalli said, “Demo Day provides an opportunity to present our work to highly regarded investors across the United States,” adding, “We hope to have a well-established, revenue-generating business by September.” No public reporting describes what happened at Demo Day or whether a further round followed it.
A product that has already changed shape
CareSwift's own description of what the software does has shifted since launch. Its Y Combinator page, live since the Summer 2025 batch, describes the product as a plugin that “integrates seamlessly with existing major ePCR systems” and speeds up report writing “by auto-populating fields.” An archived version of careswift.ai from January 2026 repeated that framing, describing the tool as connecting into the major systems already used across EMS.
The current careswift.com site, reviewed in 2026, describes something narrower. Providers use CareSwift to build a narrative, then move it themselves: “The provider manually copies the reviewed narrative into the existing ePCR.” Elsewhere the site states plainly: “CareSwift does not write back, synchronize, or submit charts.” The site frames this as a deliberate boundary: providers stay responsible for what they finalize, and CareSwift does not touch the ePCR record directly. Whether that is a narrowing of an earlier, more automated pitch, or a more precise description of how the handoff always worked, is not something the public record settles.
What is proven, and what is still claimed
| Evidence | What the record shows | Source type |
|---|---|---|
| Y Combinator batch | Listed as Summer 2025, status Active, team size 2, primary partner Tyler Bosmeny. Company launch post is dated to the batch. | Public record |
| $500,000 funding | St. John's University reported the founders “recently received $500,000 of funding” ahead of the Summer 2025 batch. A separate aggregator, StartupHub.ai, lists a $500K seed round with no lead investor named and a placeholder date of January 1, 2025, which predates the university's account and looks like a default entry rather than a confirmed date. | Differs on date |
| Team size | Y Combinator's company page lists a team of 2. StartupHub.ai says “approximately 3 people on record.” Neither is dated precisely enough to say the team grew between the two counts. | Differs |
| ePCR integration versus manual copy | Y Combinator's page and an archived careswift.ai both describe the plugin as integrating into and auto populating existing ePCR systems. The current careswift.com states plainly, “CareSwift does not write back, synchronize, or submit charts,” and that providers copy the finished narrative in by hand. | Differs from earlier company claims |
| Time savings | Reported figures have varied: YC's page says documentation time drops 80 percent to “under three minutes.” An archived careswift.ai page said 30 minutes to 2 to 3 minutes, also 80 percent. A third party directory, Shyft, cites “30 minutes to under 5 minutes.” A separate aggregator, Software on the Web, cites an 80 percent cut in documentation time and a 90 percent cut in QA review time. | Company-stated |
| Revenue recovery | Archived careswift.ai claimed agencies “recover about $50 more per call,” adding up to “$200K+ in additional revenue per ambulance each year.” Software on the Web cites “$219K additional revenue per ambulance annually.” No named agency or underlying data supports either figure. | Company-stated |
| NEMSIS and HIPAA compliance | The company and multiple directories describe reports as checked against NEMSIS and HIPAA standards, and careswift.com describes a HIPAA compliant agency environment with a business associate agreement process. No independent certification or audit record was found. | Company-stated |
| Named agency customers | A 2025 CareSwift engineering job posting asks candidates to “maintain close engagement with our customers,” implying paying or piloting agencies existed by mid-2025. No agency, city or county procurement record naming CareSwift was found. | Not found |
| SEC filings | An EDGAR full text search for CareSwift and an EDGAR company name search for Form D filings returned no results as of September 25, 2026. | Not found |
Read plainly: the outside record, a small university's account of three of its students, and a listing on Y Combinator's own site, is consistent and specific. The claims about performance and revenue come from the company or from aggregator sites repeating the company's numbers, and the company's account of what the software does to the ePCR has changed between its earlier and current marketing.
What to watch
- Whether CareSwift discloses named agency customers, a pilot, or a signed contract.
- Whether a Form D or other SEC filing appears as CareSwift raises beyond its Y Combinator check.
- What happened at Y Combinator's September 9, 2025 Demo Day and whether it led to additional funding.
- Whether the product returns to a deeper ePCR integration or stays a copy and paste handoff.
In their words
“Without CareSwift, EMTs must complete about 100 check boxes and type 600-word narratives as part of their ambulance reports, which often take 30 to 45 minutes. I wanted to respond to more calls.”
Brian Weigand, co-founder and CEO, St. John's University, July 2025 · Independent
“What that means is, they cannot respond to calls. Also, if you have a long call then immediately must go to another one, you cannot quickly document the first call. What ends up happening is patient outcomes are worse, information is lost, and there are insurance denials that come at the cost of the patient and the insurance company.”
John Paul Mussalli, co-founder and COO, St. John's University, July 2025 · Independent
“YC has a track record of launching extraordinary companies. It has distinguished itself as the best startup accelerator in the world.”
John Paul Mussalli, St. John's University, July 2025 · Independent
“CareSwift is a fantastic example of what can be achieved when a great idea meets hard work and persistence.”
James M. Kinsley, director, St. John's Venture & Innovation Center, St. John's University, July 2025 · Independent
“I am incredibly proud of the CareSwift student team for their idea, their determination, and their success to date.”
Simon G. Møller, Provost, St. John's University, July 2025 · Independent
“We hope to have a well-established, revenue-generating business by September.”
John Paul Mussalli, St. John's University, July 2025 · Independent
“Real-Time AI Documentation: Our plugin integrates seamlessly with existing major ePCR systems.”
CareSwift, Y Combinator company page, Summer 2025 · Company-stated
“CareSwift does not write back, synchronize, or submit charts.”
CareSwift, careswift.com, accessed 2026 · Company-stated
Related companies
Sources
- Public recordCareSwift company page, Y Combinator
- Public recordFounding Full-Stack Engineer job posting
- Public recordEDGAR full text and company name search for CareSwift, no Form D filings found
- IndependentLocal Students Earn $500,000 to Develop Tech Platform for EMTs
- IndependentCareSwift: Funding, Team & Investors
- IndependentCareSwift, $500K Raised, Reviews, Pricing & Alternatives
- IndependentCareSwift: AI Scribe for EMS
- IndependentCareSwift: Turn 30-minute reports into 2-minute conversations
- CompanyCareSwift Launches: AI Copilot for Ambulance Agencies
- CompanyEMS Narrative Software for Agencies, careswift.com
- CompanyCareSwift Platform page, careswift.ai
Profile researched and written by Healthcare Discovery. Last updated September 29, 2026.
