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

Dr. Seymour Alter, MD

Individual provider Specialist · NPI 1750336251

Dr. Seymour Alter, MD is a Specialist in Smithtown, New York. Licensed in New York. Registered with an NPI since 2006.

Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

222 Middle Country Rd Ste 109
Smithtown, NY 11787-2871
Phone: (631) 265-7711
Fax: (631) 265-1225
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 114051 (NY)

Record details

NPI number1750336251
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 23, 2006
Last updated in NPPESJuly 13, 2026
Mailing address222 Middle Country Rd, Suite 109, Smithtown, NY 11787-2871

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