Who We Are

Our team is a dynamic group of professionals with an extensive range of healthcare industry expertise and diverse backgrounds, united by a shared commitment to exceed our customers’ expectations every day.

NOTE: Please be cautious of any people impersonating any member of the ROS Team. There are a number of scams going on, especially now with artificial intelligence tools. If you suspect anything, please call our main number +1 858-454-8100 or e-mail info@oncologysystems.com for confirmation.

ROS John Vano

John Vano

President & CEO
ROS MichaelTeague

Michael Teague

SVP & Chief Operating Officer
Mike Summers

Mike Summers

President, Industrial Division
ROS Alan Moretti

Alan Moretti

Vice President, Strategic Business Development
ROS J Phillip Hirschfelder

J. Phillip Hirschfelder

Vice President, International
ROS Lauren Sparks

Lauren Sparks

Vice President, Business Operations
ROS Mandy Caraet

Mandy Caraet

Vice President, Corporate Controller
Wendy Summers

Wendy Summers

Vice President, Parts & Inventory Operations
ROS Walter Worobec

Walter Worobec

Vice President, Linac Engineering
ROS Julia Enderle

Julia Enderle

Vice President, Strategic Accounts
ROS Mike Guthleben

Mike Guthleben

Vice President, Diagnostic Imaging
Justin Summers

Justin Summers

Director, Technical Operations
ROS Michael Strauss

Michael Strauss

Senior Manager, Marketing and Data Operations
Chad Foster

Chad Foster

Senior Linac Engineer
Wayne Luciano

Wayne Luciano

Marketing Advisor/Fractional CMO
ROS AJ Aquino

AJ Aquino

Supervisor, Accounting/Finance
ROS Julissa Velasquez

Julissa Velásquez

Senior Client Support Specialist
ROS Tommy Hughes

Tommy Hughes

Director, Sales and Project Management
ROS Chris Minkoff

Chris Minkoff

Associate, Client Manager
ROS Liz Marisol Penaranda Aparicio

Liz Marisol Peñaranda Aparicio

Director, Latinoamérica Sales
ROS Jorge Sandoval

Jorge Sandoval

Sales/Project Manager
ROS Ana Calderon

Ana Calderón

Specialist, Accounting/Finance
Ryan Ely

Ryan Ely

Warehouse Specialist
ROS Jhonatan Tellez

Jhonatan Tellez

Associate, Client Support
ROS Daniel Chavez

Daniel Chavez

Associate, Field Projects Support
ROS Ana Laura Friely

Ana Laura Friely

Associate, Client Support
Doug Kelley

Doug Kelley

Warehouse Specialist
Vicky Velasquez

Vicky Velásquez

CRM Data Coordinator
Abner Winter

Abner Winter

CRM Data Coordinator

Let’s Discuss Your Needs

Contact us to learn more about how we can provide you with the support and guidance you need to make the right equipment decision for your practice.

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