Meet the

Alliance Cancer: Greenville/Clarksdale team

The experts at Alliance Cancer: Greenville/Clarksdale are here to help you. Learn more about each team member below.

Treatment Team

Gregg Alan Dickerson, MD, FACR, FACRO

Radiation Oncologist

Dianna Chambers, CMD, RTT


Sean Perkins, RTT

Lead Radiation Therapist

Lisa Parker, RTT

Radiation Therapist

Paula Sykes, RTT

Radiation Therapist

Peter Dilatush, RTT

Radiation Therapist

Mary Riley, FNP-S


Candi Underwood

Site Manager

Darlene Lawrence


Jennifer Corso


Consulting Physicians

Maroun Hayek, MD

Medical Oncologist & Hematologist

Mtanius Sultani, MD

Medical Oncologist





Speak To A Team Member Today!

Being diagnosed with cancer or having a loved one face the disease can be scary. Alliance Cancer Centers in Clarksdale and Greenville is here to help. Submit the form below or call our office to have our nurse navigator contact you within 24 hours (Monday-Friday).