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

Dr. John L. Xethalis, MD

Individual provider Specialist · NPI 1851493811

Dr. John L. Xethalis, MD is a Specialist in New York, New York. Practices as a sole proprietor. Licensed in New York.

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

135 E 83rd St
New York, NY 10028-2408 Not confirmed with CMS for 19 years — call before visiting
Phone: (212) 288-1250
Fax: (212) 879-2094
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 0933380 (NY)

Record details

NPI number1851493811
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 1, 2006
Last updated in NPPESJuly 8, 2007

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