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

Seymour Alter MD

Organization Internal Medicine Physician · NPI 1871671909

Seymour Alter MD is an Internal Medicine Physician in Smithtown, New York. Licensed in New York. Registered with an NPI since 2006.

Licensed in
NY
In the registry since
2006

Practice location Address checks out

222 E Main St Ste 109
Smithtown, NY 11787-2871
Phone: (631) 265-1177
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 120634 (NY)

Record details

NPI number1871671909
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Seymour Alter — Md · (631) 265-1177
NPI enumeratedNovember 2, 2006
Last updated in NPPESJune 18, 2008
Mailing address222 E Main St, Suite 109, Smithtown, NY 11787-2871

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