Meet the Infusion Therapy Center Team

Ronald F. Tutrone, Jr., M.D., F.A.C.S., C.P.I

Medical Director, Chesapeake Urology Infusion Therapy Center

Certified by the American Board of Urology
Fellow of the American College of Surgeons

Prostate Cancer Specialties: Open Prostatectomy, Advanced Prostate Cancer Treatment, Infusion Therapy

Dr. Tutrone is the medical director of the infusion therapy center, providing medical oversight of infusion therapy patients. His clinical interests include treatment of urologic malignancies including kidney, bladder and prostate; laparoscopic treatment of renal and adrenal tumors; kidney stone treatment; urinary incontinence in men and women; and prostate disorders.

He has been voted a "Top Doctor" by Baltimore magazine six times, and a "Super Doctor" for Urology in the Washington Post Magazine Washington, DC, Northern Virginia and Baltimore. Dr. Tutrone has authored numerous articles in the urology literature. He has been principal investigator in more than 200 clinical research trials. He is Chairman of the William E. Kalhert Endowment for Urological Research.


Benjamin H. Lowentritt, M.D., F.A.C.S.

Director, Chesapeake Urology Prostate Cancer Care Program

Certified by the American Board of Urology 
Fellow of the American College of Surgeons

  • Director, Minimally Invasive Surgery and Robotics, Chesapeake Urology Associates
  • Harvard College, A.B., History of Science, Magna Cum Laude
  • Baylor College of Medicine, M.D.
  • University of Maryland Medical System General Surgery Residency
  • University of Maryland Medical System Urology Residency
  • Tulane University Medical Center Fellowship in robotic, laparoscopic, and advanced endoscopic urology

Prostate Cancer Specialties: Robotic Prostatectomy, High-Intensity Focused Ultrasound (HIFU), 3D Ultrasound/MRI Fusion Prostate Cancer Biopsy, Advanced Prostate Cancer Treatment

Dr. Lowentritt provides medical oversight of infusion therapy patients at Chesapeake Urology’s infusion therapy center. He has a general urology practice with a focus on minimally invasive techniques to treat urological conditions. His expertise includes robotic, laparoscopic, and endoscopic management of renal, bladder, and prostate cancer, as well as minimally invasive options for benign prostatic hyperplasia (BPH), kidney stones, pelvic organ prolapse, and ureteropelvic junction obstruction. Dr. Lowentritt has been at the forefront of robotic urology procedures and was the first surgeon in Maryland to perform robot assisted surgery for bladder cancer. Dr. Lowentritt serves on the Board of Directors for the Baltimore City Medical Society.


David S. Goldstein, M.D., F.A.C.S.

Certified by the American Board of Urology
Fellow of the American College of Surgeons

  • Boston University, B.S.
  • Mount Sinai School of Medicine, M.D.
  • Harvard Medical School Urology Residency Program

Prostate Cancer Specialties: Robotic Prostatectomy, Infusion Therapy

Dr. Goldstein provides medical oversight of infusion therapy patients at Chesapeake Urology’s infusion therapy center. His clinical areas of interest are minimally invasive surgery for prostate, kidney and bladder cancers, including robotic and laparoscopic surgery; the treatment of kidney stones; and female and male incontinence. Dr. Goldstein has been involved in several research studies involving pharmacological and medical device testing. 


Maria Webster

Provenge Infusion Therapy Program Manager
Advanced Prostate Cancer Team Coordinator

Maria Singleton- Infusion Therapy CenterMaria Webster is the manager of the Infusion Therapy Center. She is responsible for all administrative activities, staffing, training, and coordination of the Center’s PROVENGE® program, which includes following-up with PROVENGE patients for three years post-therapy to ensure their well-being and good health. 

As the Advanced Prostate Cancer Team Coordinator, Maria works closely with patients and the infusion therapy team to ensure that all patients receiving PROVENGE are carefully monitored throughout their treatment. Maria has been an integral member of the infusion therapy program since its inception in 2011 and takes the patient through each step of the treatment process.


Katie Quaranta, RN

Katie Quaranta - Infusion Therapy Center

Infusion Therapy Center Nurse

Mary Kathleen “Katie” Quaranta, RN, has been an infusion nurse at Chesapeake Urology’s Infusion Therapy Center working with the Provenge infusion program since 2011. With an extensive background in critical care, Katie currently focuses on surgical prep and recovery. Katie received her Bachelors of Science in Nursing from the University of Delaware. She previously worked on a medical/surgical intensive care unit for five years where she cared for critically ill patients including cancer patients, administering biotherapies and occasionally chemotherapy. She is a member of the Oncology Nursing Society (ONS).