Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John K Maesaka, MD

Individual provider Nephrology Physician · NPI 1417911686

John K Maesaka, MD is a Nephrology in Mineola, New York. Graduated from Boston University School of Medicine in 1961, 65 years ago. Practices with New York University, a 5,884-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
65
Trained at
Boston University School of Medicine
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

200 Old Country Rd Ste 135
Mineola, NY 11501-4235
Phone: (516) 663-2169
Fax: (516) 663-2179
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 100559 (NY)

Record details

NPI number1417911686
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 14, 2006
Last updated in NPPESMarch 7, 2023
Certification dateFebruary 23, 2021
Mailing address200 Old Country Rd, Suite 135, Mineola, NY 11501-4235

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEPHROLOGY
Medical schoolBOSTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1961 (65 years in practice)
Group practice New York University — 5884 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Mineola