Rectangle Health
Simplifying the business side of healthcare.
316 employees · est. 1993 · United States
Series
Effortlessly automate payments, global payroll & HR, contracts, and more— all within a modular, automated back office.
28 employees · est. 2021
Rectangle Health is the older company (1993 vs 2021); Rectangle Health is the larger of the two.
Side-by-Side Comparison
| Metric | Rectangle Health | Series |
|---|---|---|
| Founded | ||
| Founded | 1993 older | 2021 |
| Headquarters | ||
| Headquarters | United States | Not tracked yet |
| Employees | ||
| Employees | 316 larger | 28 |
| Industry | ||
| Industry | Financial Services, Health Care | Finance, Financial Services, Banking |
| Funding Stage | ||
| Funding Stage | Private Equity | Seed |
| Total Funding | ||
| Total Funding | Not tracked yet | $25.00M |
| Funding Rounds | ||
| Funding Rounds | 1 | 3 |
| Services | ||
| Services | Not tracked yet | Not tracked yet |
| Target Customers | ||
| Target Customers | Not tracked yet | Not tracked yet |
| Taxonomy | ||
| Taxonomy | Healthcare Payment Processing, Practice Management Software, Financial And Operational Health Solutions, Payment Compliance, Patient Payment Solutions, Premium Processing, Billing Solutions, Compliance Requirements, Payment Reconciliation, Healthcare Software Solutions, Electronic Signature Capture, Client Success, Healthcare Community Support, Operational Efficiency | Automated Payments, Global Payroll, HR Automation, Treasury Management, Contract Management, Modular Back Office, Finance Automation, Operations Management, Business Process Automation, HR Technology, Enterprise Software, Innovative Teams, Workflow Automation |
| Website | ||
| Website | rectanglehealth.com | seriesfi.com |
About Rectangle Health
Rectangle Health is a United States-based company founded in 1993, specializing in Financial Services and Health Care industries. With the slogan "Simplifying the business side of healthcare," the company aims to streamline healthcare practices' financial and operational aspects. Its flagship soluti...
About Series
Series is a dynamic startup that has swiftly captured attention in the Finance, Financial Services, and Banking industries since its founding in 2021. The company offers a comprehensive solution to streamline finance and operations through its distinctive platform, the Series EOS. By automating key...
We will tell you when either one moves
BounceWatch watches Rectangle Health and Series for new funding, fast hiring, new executives and a change of software vendor. When one happens, we email you the same day.
Funding, hiring, leadership and stack changes at Rectangle Health and Series — by email.
Frequently Asked Questions
Compare Rectangle Health with someone else
Start typing a company name or domain.
Related Comparisons
Compiled from the BounceWatch company index. We last looked at Rectangle Health on 20 Dec 2024, and Series on 27 Jan 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.