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

Dr. Allen M. Williams, MD

Individual provider Anesthesiology Physician · NPI 1720062680

Dr. Allen M. Williams, MD is an Anesthesiology in Smithtown, New York. Qualified in 1991, 35 years ago. Practices with North Shore - Lij Anesthesiology, PC, a 1,004-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
35
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

415 W Main St
Smithtown, NY 11787-2612
Phone: (631) 521-7341
Fax: (631) 521-7342
Show map & directions

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 number1720062680
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 5, 2005
Last updated in NPPESMarch 18, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice North Shore - Lij Anesthesiology, Pc — 1004 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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