DR. ALAN I HARRIS M.D.
NPI 1821026006
Internal Medicine - Gastroenterology in Syosset, NY

Q: What is Alan Harris's NPI number?

The NPI number for Alan Harris is 1821026006. It was assigned to this individual provider in the NPPES registry on June 28, 2006.

Q: What is Alan Harris's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Alan Harris was last updated on May 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 28, 2006

25 CEDARFIELD RD, SYOSSET, NY 11791(516) 692-4067(516) 692-4067 Get Directions Write a Review

NPPES record last updated: May 30, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Alan I Harris M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ALAN I HARRIS M.D. (NPI 1821026006) is an individual gastroenterology provider in Syosset, New York, licensed in New York (116565) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1821026006

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. ALAN I HARRISCredential: M.D.

Location Address25 CEDARFIELD RDSyosset, NY 11791-1416

Mailing Address25 Cedarfield RdSyosset, NY 11791-1416 · (516) 692-4067 · Fax (516) 692-4067

Phone(516) 692-4067

Fax(516) 692-4067

Sole ProprietorNo

Enumeration DateJune 28, 2006

Last NPPES UpdateMay 30, 2025

NPPES CertifiedMay 30, 2025

✔ NPI 1821026006 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in NY · 116565

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

25 CEDARFIELD RD, Syosset, NY 11791

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Other Identifiers 2

Medicaid00416106NY

Other116565NY · License Number

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alan Harris's NPI number?

The NPI number for Alan Harris is 1821026006. It was assigned to this individual provider in the NPPES registry on June 28, 2006.

Where is Alan Harris located?

Alan Harris practices at 25 Cedarfield Rd, Syosset, NY 11791. The listed phone number is (516) 692-4067.

What is Alan Harris's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Alan Harris was last updated on May 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.