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
399 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
4.9
★★★★★
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.

  • ★★★★★
    Jul 18, 2026

    Above and beyond expectations.

  • ★★★★★
    Jul 18, 2026

    Dr G is always very caring and easy to talk to.

  • ★★★★★
    Jun 27, 2026

    Dr. Gajanayaka is a wonderful Nephrologist!!

  • ★★★★★
    Jun 9, 2026

    I was very impressed with 'Dr. G.'. Very kind, listened to me, and my concerns, and answered my questions.

  • ★★★★★
    Jun 1, 2026

    Dr G answered to all my questions with concerns.

  • ★★★★★
    May 18, 2026

    Keep doing what you are doing- it is working

★★★★★
4.8 / 5
399 reviews