Alan I. Harris, M.D.
Gastroenterology Physician · Syosset, NY
Alan I. Harris, M.D. is a gastroenterology physician with a practice address in Syosset, New York, and NPI 1821026006, issued on Jun 28, 2006. Check the license (New York 116565, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Alan I. Harris
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 116565 NY
Self-reported in NPPES; status is on the state search - Practice location
- 25 Cedarfield RD, Syosset, NY 11791
- Phone
- (516) 692-4067
- Enumerated
- Jun 28, 2006
- Record last updated
- May 30, 2025
- Fax
- (516) 692-4067
- Medicaid ID
- 00416106 NY
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,797 in New York → Look up another NPI →
Verify Alan I. Harris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 116565Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average gastroenterology physician in 2024
40 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Alan I. Harris among 1,797 gastroenterology physician records in New York
Alan I. Harris, M.D. is one of 1,797 gastroenterology physician records with a practice address in New York. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 44% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2025 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in New York
There are 1,797 gastroenterology physician records in New York.
All 1,797 in New York → Every provider in Syosset → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael AshamallaSyosset, NY 117911427589423
- Karl Friedman, MDSyosset, NY 117911467566422
- Soren Gandhi, M.D.Syosset, NY 117911023305281
- Jaydeep Kadam, M.D.Syosset, NY 117911023254612
- Sandra Layne, M.D.Syosset, NY 117911891878419
- Joseph Lazar, MDSyosset, NY 117911881784239
- Arthur Lowy, M.D.Syosset, NY 117911396707931
- Faisal Sheikh, D.O.Syosset, NY 117911114188000
Common questions
What is Alan I. Harris, M.D.'s NPI number?
Alan I. Harris, M.D.'s National Provider Identifier (NPI) is 1821026006, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alan I. Harris, M.D. located?
The NPPES record lists a practice address at 25 Cedarfield RD, Syosset, NY, 11791. Phone: (516) 692-4067. Providers update this record themselves, so call before visiting.
How can I verify Alan I. Harris, M.D.'s license?
NPPES lists New York license number 116565, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alan I. Harris, M.D. prescribe under Medicare Part D?
In 2024, Alan I. Harris, M.D. had 40 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.