Stuart Greenberg, M.D.
NPI 1043244130 · Internal Medicine Physician · West Islip, NY
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stuart Greenberg, M.D. is a Internal Medicine Physician provider in West Islip, NY (NPI 1043244130).
Provider details
- NPI number
- 1043244130
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 189144 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
772 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 465 | $77 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 100 | $110 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 76 | $168 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 53 | $128 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 53 | $79 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 25 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 45 | 43 |
| Pantoprazole Sodium | 33 | 30 |
| Prednisone | 30 | 28 |
| Apixabanbrand: Eliquis | 29 | 26 |
| Metoprolol Succinate | 29 | 27 |
| Cephalexin | 23 | 23 |
| Atorvastatin Calcium | 22 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Stuart Greenberg's NPI number?
- Stuart Greenberg's National Provider Identifier (NPI) is 1043244130, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stuart Greenberg's specialty?
- Stuart Greenberg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stuart Greenberg located?
- Stuart Greenberg's practice location on file with NPPES is 434 Sunrise Hwy, West Islip, NY 11795-2112.
- What is Stuart Greenberg's phone number?
- The practice phone number listed in the NPPES registry for Stuart Greenberg is (631) 376-1499.
- Does Stuart Greenberg accept Medicare?
- Stuart Greenberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stuart Greenberg's NPI active?
- Yes — Stuart Greenberg's NPI (1043244130) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.