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DCR has
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Unmatched Expertise: Our Mentor Research Physicians

The CKD and Rare Disease Network has an extensive and wide-reaching network of Mentor Research Physicians. Our premier network of Investigators includes these physicians with extensive experience conducting clinical trials across all stages of chronic kidney disease (CKD). For your next CKD or rare disease trial, contact DaVita Clinical Research to discuss how you can benefit from DCR through our data-driven process and decentralized model.

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Tamara Isakova, MD, MMSc

Board Certified: Nephrology, Internal Medicine

Education: SUNY Downstate Medical Center College of Medicine


• Investigator on over 26 research protocols
• MMSc: Harvard Medical School (2009)
• 122 journal publications
• Professional memberships:
     • American Society of Nephrology

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Kirsten Lee Johansen, MD

Board Certified: Nephrology, Internal Medicine

Education: Duke University School of Medicine


• Investigator on over 26 research protocols
• Director, Division of Nephrology, Hennepin Healthcare
• 254 journal publications
• Professional memberships:
     • American Society of Nephrology

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Nicole Stankus, MD, MSc

Board Certified: Nephrology, Internal Medicine

Education: Vilnius University Medical School


• Investigator on over 24 research protocols
• 18 abstracts
• 18 journal publications
• Professional memberships:
     • American Society of Nephrology
     • National Kidney Foundation

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Mark Vishnepolsky, MD, MBA

Board Certified: Nephrology

Education: Ohio State University College of Medicine


• Investigator on over 30 research protocols
• Phase 2 - 4 research experience
• 3 journal publications
• Professional memberships:
     • American Society of Nephrology (FASN)
     • Renal Physicians Association
     • American College of Physicians (FACP)