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

Allen Malcolm Williams, MD, PLLC

Organization Anesthesiology Physician · NPI 1588820997

Allen Malcolm Williams, MD, PLLC is an Anesthesiology Physician in Smithtown, New York. Licensed in New York. Registered with an NPI since 2008.

Licensed in
NY
In the registry since
2008
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

415 W Main St
Smithtown, NY 11787-2612
Phone: (631) 521-7341
Fax: (631) 521-7342
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 223882 (NY)

Record details

NPI number1588820997
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Allen Williams — President · (631) 521-7341
NPI enumeratedAugust 5, 2008
Last updated in NPPESDecember 2, 2008
Mailing address415 W Main St, Smithtown, NY 11787-2612

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