NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1093745622 MD
Verify on CMS → Brian Rubenstein, MD
Geriatric Medicine (Internal Medicine) Physician in Park Ridge, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,215 in Geriatric Medicine (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
15K
Medicare Part D claims · 657 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Brian Rubenstein, MD filed 15,300 Medicare Part D claims in 2024 as a Geriatric Medicine (Internal Medicine) Physician in Park Ridge, Illinois, prescribing 83% generic.
- 15K
- Part D claims, 2024
- 83%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥98th
- 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.
Federal trust snapshot
What official records show about Brian Rubenstein, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1093745622), first enumerated 07/03/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 15,300 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Brian Rubenstein, MD's individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1093745622 · Geriatric Medicine (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-HEAVY · BOOK-THIN · PHOTO-ENUM
- NPI-10 1093745622
- ENUM-LEGACY 2006
- TAX-NARROW 4,215
- RX-HEAVY 15K claims
- BOOK-THIN 155 in Illinois
- PHOTO-ENUM Baron Wong, M.D. · 2006
Brian Rubenstein, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
15,300 ≥ 98th percentile 98% of 1,416,883 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 · 2024
✓
Board certification likely (heuristic, not verified)
Brian Rubenstein, MD 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 Brian Rubenstein, MD?
Quality data not reportedPrimary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
15,300 246% vs specialty avg
Specialty distribution in Illinois
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Illinois 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 Geriatric Medicine (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 | 1093745622 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/03/2006 |
Hospital and facility affiliations
Facilities where Brian Rubenstein, MD 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.
Advocate Health And Hospitals Corporation
Park Ridge, IL
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 - Illinois IDFPR 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 ~42K Illinois medical licensees in 2023 - they are NOT specific to Brian Rubenstein, MD. To verify Brian Rubenstein, MD's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR 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 Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Brian Rubenstein, MD - brand share 17.0%
Geriatric Medicine (Internal Medicine) Physician average
17% brand-name claims vs 83% generic, on 15,300 2024 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 2024.
15,300
Total Claims
$1.1M
Total Drug Cost
657
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 21,547.767
- Total Day Supply
- 547,689
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $726K
- Generic Drug Cost
- $341K
- Opioid Claims
- 173 (1.1% rate)
- Antibiotic Claims
- 448
Patient Demographics
- Average Patient Age
- 81.7 years
- Avg HCC Risk Score
- 2.16
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 19, 65-74: 132, 75-84: 228, 85+: 278
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Brian Rubenstein, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
1,071 claims
- Eliquis
Eliquis
686 claims
- Amlodipine Besylate
Amlodipine Besylate
583 claims
- Gabapentin
Gabapentin
443 claims
- Levothyroxine Sodium
Levothyroxine Sodium
430 claims
- Potassium Chloride 367
Potassium Chloride
367 claims
- Omeprazole 361
Omeprazole
361 claims
- Furosemide 339
Furosemide
339 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 1,071 |
| Eliquis Apixaban | 686 |
| Amlodipine Besylate | 583 |
| Gabapentin | 443 |
| Levothyroxine Sodium | 430 |
| Potassium Chloride | 367 |
| Omeprazole | 361 |
| Furosemide | 339 |
| Metoprolol Tartrate | 333 |
| Tamsulosin Hcl | 315 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Geriatric Medicine (Internal Medicine) Physician in IL →
All providers in Illinois →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Brian Rubenstein, MD fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,215
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,420
Avg Claims per Provider
Brian Rubenstein, MD's 15,300 claims are above the specialty average of 4,420.
Nationwide Geriatric Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Rubenstein, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Rubenstein.
One of 155 Geriatric Medicine (Internal Medicine) Physician providers enrolled in Illinois, 5 are shown here.
Frequently Asked Questions
What is Brian Rubenstein, MD's specialty? ▼
Brian Rubenstein, MD specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Park Ridge, Illinois. Credentials: MD.
How much does Brian Rubenstein, MD prescribe under Medicare Part D? ▼
In 2024, Brian Rubenstein, MD wrote 15,300 Medicare Part D claims totaling $1.1M in drug costs for 657 beneficiaries.
Where is Brian Rubenstein, MD located? ▼
Brian Rubenstein, MD is located at 1775 BALLARD RD, Park Ridge, IL, 60068. Phone: (847) 318-2500.
What is Brian Rubenstein, MD's NPI number? ▼
Brian Rubenstein, MD's National Provider Identifier (NPI) is 1093745622, issued on 07/03/2006.
Does Brian Rubenstein, MD prescribe more brand-name or generic drugs? ▼
Brian Rubenstein, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $726K in brand drug costs.
Does Brian Rubenstein, MD prescribe opioids? ▼
Yes, Brian Rubenstein, MD had 173 opioid claims in 2024 with an opioid prescribing rate of 1.1%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,215 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,420 Medicare Part D claims per year.
What drugs does Brian Rubenstein, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Brian Rubenstein, MD's most frequently prescribed drugs include Atorvastatin Calcium, Eliquis, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Brian Rubenstein, MD accept Medicare? ▼
Brian Rubenstein, MD appears in CMS Medicare data with 15,300 Part D claims and 657 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Brian Rubenstein, MD's credentials? ▼
Brian Rubenstein, MD's NPI is 1093745622 with credentials MD. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.