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COVID-19 Update

Due to interest in the COVID-19 vaccines, we are experiencing an extremely high call volume. Please understand that our phone lines must be clear for urgent medical care needs. We are unable to accept phone calls to schedule COVID-19 vaccinations at this time. When this changes, we will update this website. Our vaccine supply remains limited. Read all COVID-19 Vaccine Information.

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Kathryn Mary Ratanavanich, D.O.



Montgomery Renal Associates PA

15225 Shady Grove RD
Suite 104
Rockville, MD 20850 map
Phone: 301-330-0550 | Fax: 301-330-0588


Departments / Divisions

  • Medicine at Suburban Hospital



  • DO; Western University of Health Sciences-College of Osteopathic Medicine of the Pacific (2002)


  • Internal Medicine; Medstar Washington Hospital Center (2005)


  • Nephrology; Medstar Washington Hospital Center (2007)

Board Certifications

  • American Board of Internal Medicine (Nephrology) (2008)

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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