Kidney Doctors

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

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
282 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.

  • ★★★★★
    Oct 29, 2025

    5. The dr. explained that I need to have some tests before any treatment plan could be determined. I appreciated that the doctor explained everything thoroughly.

  • ★★★★★
    Oct 18, 2025

    Wait times would be a factor

  • ★★★★★
    Sep 28, 2025

    Very good

  • ★★★★★
    Aug 23, 2025

    I appreciate Dr. G....he is concerned and he follows through and that is appreciated

  • ★★★★★
    Aug 18, 2025

    It's always a pleasure visiting and having Dr. Gajanayaka making sure I am in tip top shape. It's not often a provider takes the time to make a patient feel assured and prove they have the finest caregiver around.

  • ★★★★★
    Aug 16, 2025

    Dr G is tge BEST!

★★★★★
4.8 / 5
282 reviews