Ranil Gajanayaka, MD

Nephrology

EDUCATION

  • M.P.H., California State University, Los Angeles, CA
  • M.D., University of Colombo, Colombo, Sri Lanka

Internship/Residency

  • Internal Medicine, Danbury Hospital, Danbury, CT

Fellowships

  • Mayo Clinic, Rochester, MN
  • Yale New Haven Hospital, New Haven, CT

BOARD CERTIFIED

  • Internal Medicine
  • Nephrology

ORGANIZATIONS/MEMBERSHIPS

  • American Society of Nephrology
  • International Society of Nephrology
  • International Society of Peritoneal Dialysis
  • American Medical Association
  • Dallas County Medical Society
  • Renal Physicians Association
  • Texas Medical Association

LANGUAGES

  • English
  • Tamil
  • Sinhala

To schedule an appointment with Dr. Gajanayaka, call Dallas Nephrology today at 214-358-2300 or contact us via our convenient online form.

Patient Ratings & Comments

4.8 / 5
338 reviews

Detailed Ratings

4.9
Friendliness/courtesy of CP
4.8
Likelihood of recommending this provider
4.8
Provider discussed treatment options
4.8
Provider explained things clearly
4.8
Provider showed concern
4.8
Provider included you in decisions

Comments also are gathered from our Patient Satisfaction Survey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

  • Feb 21, 2026

    Dr. G was very patient answering my concerns and explained everything thoroughly. I appreciated this.

  • Feb 15, 2026

    Dr G is one of my favorite doctors. He always remembers me, even though I now only have to see him annually. He is thorough and communicates his thoughts and concerns to me. He has listened extensively to concerns about my kidneys from both my husband and myself, and patiently addressed them. He is great.

  • Feb 9, 2026

    Good experience.

  • Jan 24, 2026

    I have been a patient of Dr G for several years. He always gives me suggestions about my care.

  • Jan 19, 2026

    Excellent

  • Jan 18, 2026

    Great experience as always.

4.8 / 5
338 reviews