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

Dr. Alan I Harris, MD

Individual provider Gastroenterology Physician · NPI 1821026006

Dr. Alan I Harris, MD is a Gastroenterology Physician in Syosset, 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.

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Practice location Address checks out

25 Cedarfield Rd
Syosset, NY 11791-1416
Phone: (516) 692-4067
Fax: (516) 692-4067
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Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 116565 (NY)

Record details

NPI number1821026006
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 28, 2006
Last updated in NPPESMay 30, 2025
Certification dateMay 30, 2025
Mailing address25 Cedarfield Rd, Syosset, NY 11791-1416

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