Insights

Niche oncology Isoray specializes in Cesium-131 brachytherapy seeds for prostate cancer, indicating a strong position in a high-value, specialized oncology niche with potential for clinic partnerships and specialty distributors.

Clinical adoption Top medical centers and hospitals are already offering Cesium-131 brachytherapy through Isoray, presenting opportunities to expand with additional leading cancer centers and referral networks.

Growth funding With a stated revenue range and $34M in funding, there is financial backing to scale manufacturing, support clinical trials, and invest in sales teams targeting urology and radiation oncology departments.

Tech-enabled ops Isoray's tech stack indicates digital engagement capabilities (web, CRM, analytics, PDFs) to enhance customer outreach, education, and order processing for medical facilities.

Competitive landscape Operating in a field with legacy isotopes (Iodine-125, Palladium-103) and growth in Cesium-131, Isoray can leverage its unique isotope advantages to differentiate in procurement bids and hospital purchasing.

Similar companies to Isoray

Isoray Tech Stack

Isoray uses 8 technology products and services including Open Graph, WordPress, MySQL, and more. Explore Isoray's tech stack below.

  • Open Graph
    Content Management System
  • Content Management System
  • MySQL
    Database
  • SweetAlert
    Javascript Libraries
  • Marketing Automation
  • Microsoft
    Miscellaneous
  • PDF.js
    Miscellaneous
  • Microsoft Office
    Office Suites

Media & News

Isoray's Email Address Formats

Isoray uses at least 4 email formats:
Isoray Email FormatsExamplePercentage
FLast@isoray.comJDoe@isoray.com
90%
Last_First@isoray.comDoe_John@isoray.com
4%
Last@isoray.comDoe@isoray.com
4%
FiLast@isoray.comJoDoe@isoray.com
2%

Frequently Asked Questions

What is Isoray's phone number?

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You can contact Isoray's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Isoray's stock symbol?

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Isoray is a publicly traded company; the company's stock symbol is ISR.

What is Isoray's official website and social media links?

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Isoray's official website is isoray.com and has social profiles on LinkedIn and Crunchbase.

How much revenue does Isoray generate?

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As of August 2026, Isoray's annual revenue is estimated to be $1M - $10M.

What is Isoray's SIC code and NAICS code?

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Isoray's SIC code is 2835 - In Vitro and In Vivo Diagnostic Substances and NAICS code is 3391 - Medical Equipment and Supplies Manufacturing.

How many employees does Isoray have currently?

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As of August 2026, Isoray has approximately 31 employees across 2 continents, including North America and Europe. Key team members include Vice President Sales And Marketing: D. F. and Independent Director: P. V. Explore Isoray's employee directory with LeadIQ.

What industry does Isoray belong to?

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Isoray operates in the Medical Equipment Manufacturing industry.

What technology does Isoray use?

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Isoray's tech stack includes Open Graph, WordPress, MySQL, SweetAlert, ActiveCampaign, Microsoft, PDF.js and Microsoft Office.

What is Isoray's email format?

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Isoray's email format typically follows the pattern of FLast@isoray.com. Find more Isoray email formats with LeadIQ.

How much funding has Isoray raised to date?

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As of August 2026, Isoray has raised $34M in funding. The last funding round occurred on Jan 22, 2024 for $21M.

When was Isoray founded?

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Isoray was founded in 1998.
Isoray logo

Isoray

Medical Equipment ManufacturingWashington, United States11-50 Employees

Isoray is a medical equipment manufacturer headquartered in Richland, Washington, focusing on Cesium-131 brachytherapy seeds used to treat cancer. The radioactive seeds are sealed in titanium capsules and implanted directly into the tumor, for example in the prostate, to provide targeted radiation therapy. The unique properties of Cesium-131 are linked with potential clinical benefits for patients receiving seed brachytherapy.

Founded in 1998 to produce and commercialize Cesium-131 seeds, Isoray serves major medical centers, hospitals, and clinics across the United States. The company operates with a relatively small workforce within the medical device sector.

Section iconCompany Overview

Phone number
Website
isoray.com
SIC Code
2835 - In Vitro and In Vivo Diagnostic Substances
Stock Symbol
ISR
NAICS Code
3391 - Medical Equipment and Supplies Manufacturing
Founded
1998
Employees
11-50

Section iconFunding & Financials

  • $34M

    Isoray has raised a total of $34M of funding over 3 rounds. Their latest funding round was raised on Jan 22, 2024 in the amount of $21M as a Post IPO Equity.

  • $1M - $10M

    Isoray's revenue is estimated to be in the range of $1M - $10M

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