Our Physicians

Dr. Russell Ellenberg

Russell C. Ellenberg, MD
Medical Director of Hopewell Dialysis Center

  • Over 30 years experience in the medical field
  • Graduated from Creighton University Medical School
  • Retired Military
  • Board Certified in Nephrology and Internal Medicine
  • Joined MKC 1995
Dr. Sandy M. Gibson

Sandy M. Gibson, MD
Medical Director of Appomattox Dialysis Center

  • Over 25 years experience
  • Graduated from Medical College of Virginia
  • Residency: Cooper Hospital University Medical Center
  • Nephrology Fellowship: George Washington University
  • Board Certified in Nephrology and Internal Medicine
  • Joined MKC 1995
Dr. Richard A. Gayle

Richard A. Gayle, MD
Medical Director of East End Dialysis Center

  • Over 19 years experience
  • Graduated from Faculty of Medical Sciences, University of the West Indies in Jamaica
  • Residency and Fellowship: College of Physicians and Surgeons, Columbia University (Harlem Hospital Center), New York
  • Board Certified in Nephrology and Internal Medicine
  • Joined MKC 2002
Lozina T. Daneva, MD

Lozina T. Daneva, MD
Medical Director of Richmond Community Dialysis Center

  • Over 25 years experience in the medical field
  • Graduated from The Medical Academy, Bulgaria
  • Nephrology Residency and Internship: New York Medical College, St. Vincents Hospital, New York
  • Board Certified in Nephrology and Internal Medicine
  • Joined MKC 2004
Brenda C. Halstead, RN, NP, CNN

Brenda C. Halstead, RN, NP, CNN
Nurse Practitioner

  • Over 30 years experience as Acute and Chronic Dialysis Nurse, and Dialysis Facility Administrator
  • B.S. and M.S. in Nursing from Virginia Commonwealth University/MCV
  • Joined MKC 2000