21st Century Oncology Employee Directory

Medical PracticesUnited States1001-5000 Employees

At GenesisCare, we offer multidisciplinary personalized cancer treatments based on individual patient needs.

Find 21st Century Oncology employees' phone numbers or email addresses

21st Century Oncology Global Highlights

North America
915

United States Of America
914
Costa Rica
1

South America
6

Argentina
5
Ecuador
1

Europe
5

United Kingdom Of Great Britain And Northern Ireland
5

Asia
1

Russian Federation
1

21st Century Oncology's Leadership

L. B.
Chief Executive Officer
Mobile Phone
Email
A. R. B.
Chief Medical Dosimetrist
Mobile Phone
Email
R. B.
Chief Medical Physicist
Mobile Phone
Email
K. S.
Chief Radiation Therapist
Mobile Phone
Email
E. S.
Chief Radiation Therapist/Fso
Mobile Phone
Email
S. G.
Chief Radiation Therapist
Mobile Phone
Email
G. B.
Chief Pilot
Mobile Phone
Email
K. C.
Chief Radiation Therapist
Mobile Phone
Email

21st Century Oncology Employee Metrics

100%

50%

2025

2024

Healthcare Services
Administrative
Finance
Research
Accounting
Other
Information Technology
Engineering

Contact profiles from 21st Century Oncology

Name

Title

Contact Info

Location

Last Update

D. C.
President
Mobile Phone
Email
Oct 22, 2024
K. H.
Owner
Mobile Phone
Email
Oct 21, 2024
L. B.
Chief Executive Officer
Mobile Phone
Email
Oct 22, 2024
M. S.
Executive Assistant To The Chief Executive Officer
Mobile Phone
Email
Oct 17, 2024
M. A.
Owner
Mobile Phone
Email
Oct 22, 2024
R. D.
President
Mobile Phone
Email
Oct 17, 2024
R. W. K.
Owner
Mobile Phone
Email
UNITED STATES
Mar 08, 2023
D. W.
Executive Vp & Cfo
Mobile Phone
Email
United StatesFlorida
Sep 12, 2025
M. B.
Sr. Assoc. General Counsel & Vp Risk Management
Mobile Phone
Email
United StatesArizona
Jul 18, 2025
A. S.
Vice President - Tax
Mobile Phone
Email
United StatesFlorida
Oct 20, 2025

Frequently Asked Questions

What is 21st Century Oncology known for?

21st Century Oncology operates in the Medical Practices industry. The company's main headquarters is located in 2270 Colonial Boulevard, Fort Myers, FL 33907, US; you can contact the main corporate office by phone at

+1-239-931-****

. Explore 21st Century Oncology's company overview page for more information.

What is 21st Century Oncology's most common email format?

21st Century Oncology employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more 21st Century Oncology email formats with LeadIQ.

How many employees does 21st Century Oncology have currently?

21st Century Oncology has approximately 1K employees as of October 2025. These team members are located across 4 continents, including North AmericaSouth AmericaEurope.

Who are 21st Century Oncology's key employees and leadership?

As of October 2025, 21st Century Oncology's key employees include:

Chief Executive Officer: L. B.
Chief Medical Dosimetrist: A. R. B.
Chief Medical Physicist: R. B.
Chief Radiation Therapist: K. S.
Chief Radiation Therapist/Fso: E. S.

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