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Dr. John Maesaka, MD

Dr. John Maesaka, MD

Age 85 Nephrology M
(2) 2 reviews

Telehealth available

Accepting New Patients


Dr. John Maesaka, MD is a nephrology specialist in Mineola, NY. Dr. Maesaka completed a residency at Mount Sinai Hospital. He currently practices at Winthrop Nephrology Associates and is affiliated with NYU Langone Hospital - Brooklyn. He accepts multiple insurance plans. Dr. Maesaka is board certified in Internal Medicine.


  • Mount Sinai Hospital, Fellowship Hospital — 1970
  • Mount Sinai Hospital, Residency Hospital — 1967
  • Barnes - Jewish Hospital, Residency Hospital — 1963
  • Barnes - Jewish Hospital, Internship Hospital — 1962

Insurance Accepted

  • Aetna
  • Anthem
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Louisiana
  • Blue Cross Blue Shield of Massachusetts
  • Capital District Physician's Health Plan (CDPHP)
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • EmblemHealth
  • Empire Blue Cross Blue Shield
  • MultiPlan

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  1. Winthrop Nephrology Associates

    1. 1
      Winthrop University Hospital Division of Nephrology
      200 Old Country Rd Ste 370, Mineola, NY 11501 Existing Patients: (516) 663-2169

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Superlatives on every count! He has helped me and members of my family. Extremely knowledgeable coupled with kindness and caring. Unbeatable combination. The best there is! May he continue to practice for many more years.
Steve K — Aug 20, 2020
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Dr. John Maesaka, MD
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Frequently Asked Questions

Dr. Maesaka frequently treats Diabetes With Renal Manifestations, Secondary Renovascular Hypertension, and Proteinuria.  

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Hospital Affiliations

  • NYU Langone Hospital - Brooklyn
  • NYU Langone Hospital—Long Island