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Physicians & Staff

CCSI is proud to serve patients with highly skilled physicians and staff. Our physicians bring a wealth of expertise together with a variety of special interest areas. Furthermore, our specially trained staff meet the needs of patients on a daily basis.

CCSI patients describe our physicians and staff as competent, caring, compassionate, helpful, and considerate. Our physicians and staff help patients and their families during what is often a difficult and frustrating time. Whether giving a treatment, educating patients and their families, or just showing a simple smile, CCSI’s caring and compassionate staff provide support to patients and their families each and every day.

For more information about our physicians and providers, select a link:

 

Medical Oncology / Hematology

Justin D. Floyd, DO, FACOI

Justin D. Floyd, DO, FACOI - President

James L. Wade III, MD, FACP, FASCO, , FACCC

James L. Wade III, MD, FACP, FASCO, FACCC - President Emeritus

Philip A. Dy, MD

Philip A. Dy, MD

Perry P. Guaglianone, MD, FACP

Perry P. Guaglianone, MD, FACP

Mario R. Velasco Jr., MD, FACP

Mario R. Velasco Jr., MD, FACP

Hanna M. Saba, MD

Hanna M. Saba, MD

Sebastien S. Kairouz, MD

Sebastien S. Kairouz, MD

Bassam N. Maalouf, MD

Bassam N. Maalouf, MD

Mark A. Walshauser, MD, FACP, FASCO

Mark A. Walshauser, MD, FACP, FASCO

Gibran H. Mahmud, MD

Gibran H. Mahmud, MD

Evelena P. Ontiveros, MD, PhD

Evelena P. Ontiveros, MD, PhD

Bachir Farah, MD

Bachir Farah, MD

Kristi M. Toennies, RN, MSN, FNP

Kristi M. Toennies, FNP, AOCNP

Christel G. Wheeler, DNP, FNP-BC

Christel G. Wheeler, DNP, FNP-BC

Michelle D. McQuillan, DNP, FNP-BC

Michelle D. McQuillan, DNP, FNP-BC

Kelsey D. Beasley, FNP-C, AOCNP

Kelsey D. Beasley, FNP-C, AOCNP

Rachael E. DeMattei, DNP, FNP-BC

Rachael E. DeMattei, DNP, FNP-BC

Rachel I. Kline, FNP-C

Rachel I. Kline, FNP-C

Sarah N. Mackey, FNP-C

Sarah N. Mackey, FNP-C

Kaylee M. Beals, DNP, FNP-BC

Kaylee M. Beals, DNP, FNP-BC

Julianne J. Tomac, DNP, FNP-C

Julianne J. Tomac, DNP, FNP-C

Shannon E. Niebrugge, FNP-C

Shannon E. Niebrugge, FNP-C

Alexis J. Wernsman, FNP-C

Alexis J. Wernsman, FNP-C

Radiation Oncology

Edward C. Elliott, MD, FACR, FCAP

Edward C. Elliott, MD, FACR, FCAP

Mary Anne de Paz, MD

Mary Anne de Paz, MD

Renata C. Moore, MD

Renata C. Moore, MD

Seong R. Cho, MD

Seong R. Cho, MD

Harold A. Yoon, MD

Harold A. Yoon, MD

Casey E. Duncan, MD

Casey E. Duncan, MD

Jacob S. Witt, MD

Jacob S. Witt, MD

Ryan C. Mueller, MD, BSRT(T)

Ryan C. Mueller, MD, BSRT(T)

For individual center and clinic contact information, please click here.

For general questions and information, please call (217) 876-6600.

To schedule an appointment or speak about a specific question or concern, please call our office at: (217) 876-6600.

Additional Staff Contact Information:

Nursing

Emily B. Purcell, RN, BSN, OCNDirector of Nursing ServicesPhone (618) 436-5410

Laboratory

Marielle Reyes, MT(ASCP)
Director of Laboratory Services
Phone (217) 329-3313

Imaging

Meagan Roepke, BS, CNMT, NMTCB (CT)
Director of Imaging Services
Phone (217) 342-2066

Radiation Therapy

Leigh Ann Ruffner, BS, RT(R)(T), ARRT
Director of Radiation Therapy Services
Phone (217) 342-2066

Pharmacy

Michelle Heidel, PharmD.
Director of Pharmacy Services
Phone (217) 876-6600

Providers

Kristi M. Toennies, FNP, AOCNP
Director of Advanced Practice Providers
Phone (618) 436-5410

Administration

Rhonda S. Luther, BA, MA
Chief Operating Officer
Phone (217) 329-3268

Joe Wisner, CPA, MBA
Chief Financial Officer
Phone (217) 329-3276

Human Resources

Thomas G. Pratt, MBA
Director of Human Resources
Phone (217) 329-3262

Office, Billing & Transcription

Lillie Barker
Director of Support Services
Phone (217) 329-3302

Deanna Schmitz
Director of Business Office Services
Phone (217) 877-9442

Tricia Henning
Director of Information Services & Special Projects
Phone (217) 329-3257