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Meet The Team

Lee Health Regional Cancer Center has a unique partnership between private physician group partners—21st Century Oncology and Florida Cancer Specialists and Research Institute. Working together, our physicians, nurses, and the entire Regional Cancer Center staff can offer patients treatment for nearly every aspect of their cancer care – all under one roof. 


Breast Surgery

  • Rie Aihara, MD, FACS
  • Lea M. Blackwell, MD, FACS
  • David T. Rock, MD, FACS
  • Samith Sandadi, MD, Msc, FACOG

Cardiothoracic Surgery

  • Randall Buss, MD
  • Michael DeFrain, MD
  • Paul DiGiorgi, MD
  • David Cervantes, MD


  • Anita Arnold, DO

Clinical Nurse Specialists

  • Karen Blewit, RN
  • Mary Ann Orlang, RN

Colorectal Surgery

  • Valerie R. Dyke, MD, FACS, FASCRS
  • Janette U. Gaw, MD, FACS, FASCRS
  • Jeffery A. Neale, MD, FACS, FASCRS
  • Nagesh B. Ravipati, MD, FACS, FASCRS

ENT Oncology

  • Anthony Anfuso, MD, FACS
  • Scott Larson, MD

Genetic Counseling

  • Mary Ann Orlang, RN
  • Jessica Isaacs

GYN Oncology

  • Fadi Abu Shahin, MD, FACOG
  • Edward C. Grendys, Jr., MD
  • James Orr, MD, FACOG, FACS
  • Samith Sandadi, MD, Msc, FACOG

Lung Cancer Screening Clinic

  • Bobbi Marino MSN, APRN, FNP-BC, OCN Nurse Practitioner

Palliative Care

  • Rabia Khan, DO
  • Jonathan von Koenig, DO
  • Sara Newman, MD

Radiation Oncology

  • Constantine A. Mantz, MD
  • Keith L. Miller, MD
  • Kristina Mirabeau-Beale, MD, MPH

Surgical Oncology

  • Basan Allan, MD
  • Mark Bloomston, MD, FACS