Stuart Neil Greenberg, M.D.
Internal Medicine Physician · West Islip, NY
Stuart Neil Greenberg, M.D. is an internal medicine physician with a practice address in West Islip, New York, and NPI 1043244130, issued on Jul 11, 2006. Check the license (New York 189144, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Stuart Neil Greenberg
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 189144 NY
Self-reported in NPPES; status is on the state search - Practice location
- 434 Sunrise Hwy, West Islip, NY 11795
- Phone
- (631) 376-1499
- Enumerated
- Jul 11, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 01497272 NY
- Medicare enrollment
- Enrolled (PECOS I20070910000656); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Verify Stuart Neil Greenberg 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 189144Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average internal medicine physician in 2024
665 Medicare Part D claims for 350 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 48 claims were for opioids.
Most prescribed
- Cefdinir45 claims
- Pantoprazole Sodium33 claims
- Prednisone30 claims
- Eliquis29 claims
- Metoprolol Succinate29 claims
- Cephalexin23 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Stuart Neil Greenberg among 12,067 internal medicine physician records in New York
Stuart Neil Greenberg, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1989 · median 2002 among the 7,221 with a school on file
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 internal medicine physician records list a practice address in West Islip
They are 23 of the 1,107 NPPES records with a practice address in West Islip, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in West Islip → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sumeet Anand, MDWest Islip, NY 117951902896764
- Eleni Dilos, M.D.West Islip, NY 117951992700116
- Michael Gewirtz, MDWest Islip, NY 117951093739534
- Thomas Hall, MDWest Islip, NY 117951356365803
- Abu Muhammad Haque, MDWest Islip, NY 117951588658512
- Gabriel Leonte, MDWest Islip, NY 117951144225350
- Anser Lone, M.D.West Islip, NY 117951407851637
- Bernard Nash, M.D.West Islip, NY 117951831196187
Common questions
What is Stuart Neil Greenberg, M.D.'s NPI number?
Stuart Neil Greenberg, M.D.'s National Provider Identifier (NPI) is 1043244130, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stuart Neil Greenberg, M.D. located?
The NPPES record lists a practice address at 434 Sunrise Hwy, West Islip, NY, 11795. Phone: (631) 376-1499. Providers update this record themselves, so call before visiting.
How can I verify Stuart Neil Greenberg, M.D.'s license?
NPPES lists New York license number 189144, 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 Stuart Neil Greenberg, M.D. prescribe under Medicare Part D?
In 2024, Stuart Neil Greenberg, M.D. had 665 Medicare Part D claims for 350 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Stuart Neil Greenberg, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.