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

Dr. William Mazanitis, MD

Individual provider Anesthesiology Physician · NPI 1386644508

Dr. William Mazanitis, MD is an Anesthesiology Physician in Mount Kisco, New York. Licensed in New York. Registered with an NPI since 2005.

Licensed in
NY
In the registry since
2005
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

400 E Main St Northern Westchester Hospital
Mount Kisco, NY 10549-3417
Phone: (914) 666-1691
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 150470 (NY)

Record details

NPI number1386644508
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 29, 2005
Last updated in NPPESJuly 13, 2026
Mailing address43 Kensico Dr, 2nd Floor, Mount Kisco, NY 10549-1009

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