NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1598806267
Verify on CMS → Stephen Reuben
Internal Medicine Physician in Flushing, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
7K
Medicare Part D claims · 623 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Stephen Reuben filed 6,974 Medicare Part D claims in 2023 as an Internal Medicine Physician in Flushing, New York, prescribing 88% generic.
- 7K
- Part D claims, 2023
- 88%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥96th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
CMS NPPES provider registry desk
NPI 1598806267 · Internal Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1598806267
- ENUM-MID 2007
- TAX-MEGA 173K Internal Medicine
- RX-MID 6,974
- BOOK-MID 13,660 in New York
- PHOTO-ENUM Thomas Maxwell · 2007
Stephen Reuben's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
6,974 ≥ 96th percentile 96% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Stephen Reuben practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Stephen Reuben?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
6,974 157% vs specialty avg
Specialty distribution in New York
How Internal Medicine Physician compares to other specialties among New York providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1598806267 |
|---|---|
| Specialty | Internal Medicine Physician |
| Gender | Male |
| NPI Issued | 02/08/2007 |
Hospital and facility affiliations
Facilities where Stephen Reuben bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
North Shore Medical Group OF The Mount Sinai School OF Medicine
Maspeth, NY
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - New York NYSBPMC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 - they are NOT specific to Stephen Reuben. To verify Stephen Reuben's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Stephen Reuben - brand share 11.0%
Internal Medicine Physician average
11% brand-name claims vs 88% generic, on 6,974 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
6,974
Total Claims
$617K
Total Drug Cost
623
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 17,756
- Total Day Supply
- 525,382
- Brand vs Generic
- 11% brand / 88% generic
- Brand Drug Cost
- $496K
- Generic Drug Cost
- $121K
- Opioid Claims
- 28 (0.4% rate)
- Antibiotic Claims
- 190
Patient Demographics
- Average Patient Age
- 78.2 years
- Avg HCC Risk Score
- 1.10
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 13, 65-74: 217, 75-84: 243, 85+: 150
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Stephen Reuben prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
507 claims
- Amlodipine Besylate
Amlodipine Besylate
440 claims
- Hydrochlorothiazide
Hydrochlorothiazide
367 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
327 claims
- Levothyroxine Sodium
Levothyroxine Sodium
297 claims
- Metoprolol Succinate
Metoprolol Succinate
267 claims
- Spironolactone
Spironolactone
216 claims
- Metformin Hcl
Metformin Hcl
206 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 507 |
| Amlodipine Besylate | 440 |
| Hydrochlorothiazide | 367 |
| Rosuvastatin Calcium | 327 |
| Levothyroxine Sodium | 297 |
| Metoprolol Succinate | 267 |
| Spironolactone | 216 |
| Metformin Hcl | 206 |
| Losartan Potassium | 198 |
| Diltiazem 24hr Er (Cd) Diltiazem Hcl | 158 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Stephen Reuben fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Stephen Reuben's 6,974 claims are above the specialty average of 2,716.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Reuben, both outside New York so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Reuben.
One of 13,660 Internal Medicine Physician providers enrolled in New York, 5 are shown here.
Dr. Deborah Aanonsen
D.O.
Staten Island, NY
Dr. Nivedita Aanur
M.D.
New York, NY
Dr. Jay Aaron
MD
Great Neck, NY
Dr. Justin Aaron
MD
New York, NY
Ahmad Abadi
Poughkeepsie, NY
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Stephen Reuben's specialty? ▼
Stephen Reuben specializes in Internal Medicine Physician and practices in Flushing, New York.
How much does Stephen Reuben prescribe under Medicare Part D? ▼
In 2023, Stephen Reuben wrote 6,974 Medicare Part D claims totaling $617K in drug costs for 623 beneficiaries.
Where is Stephen Reuben located? ▼
Stephen Reuben is located at 4500 PARSONS BLVD, Flushing, NY, 11355. Phone: (718) 670-5580.
What is Stephen Reuben's NPI number? ▼
Stephen Reuben's National Provider Identifier (NPI) is 1598806267, issued on 02/08/2007.
Does Stephen Reuben prescribe more brand-name or generic drugs? ▼
Stephen Reuben's prescribing is 11% brand-name and 88% generic drugs by claim count, with $496K in brand drug costs.
Does Stephen Reuben prescribe opioids? ▼
Yes, Stephen Reuben had 28 opioid claims in 2023 with an opioid prescribing rate of 0.4%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Stephen Reuben prescribe most often? ▼
Based on 2023 Medicare Part D data, Stephen Reuben's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Hydrochlorothiazide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephen Reuben accept Medicare? ▼
Stephen Reuben appears in CMS Medicare data with 6,974 Part D claims and 623 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Reuben's credentials? ▼
Stephen Reuben's NPI is 1598806267. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.