NPI registry status
Active
2026 NPPES data Dermatology Physician NPI 1003873126 MD
Verify on CMS → Mitchell Rubenstein, MD
Dermatology Physician in Brookline, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 15,011 in Dermatology 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
1K
Medicare Part D claims · 410 beneficiaries · Dermatology Physician avg: 799
Generic prescribing
86%
generic claims · 14% 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
Mitchell Rubenstein, MD filed 1,160 Medicare Part D claims in 2024 as a Dermatology Physician in Brookline, Massachusetts, prescribing 86% generic.
- 1K
- Part D claims, 2024
- 86%
- generic prescribing
- ≥77th
- 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 Mitchell 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 1003873126), first enumerated 05/01/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,160 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Mitchell Rubenstein, MD's individual license status. Verify directly with the state medical board.
Source: BORIM 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 1003873126 · Dermatology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1003873126
- ENUM-LEGACY 2006
- TAX-MID 15K Dermatology Physician
- RX-MID 1,160
- BOOK-LIGHT 557 in Massachusetts
- PHOTO-ENUM Evan Schlam, MD · 2006
Mitchell Rubenstein, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,160 ≥ 77th percentile 77% 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-eligible specialty (heuristic, not verified)
Mitchell Rubenstein, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Mitchell Rubenstein, MD?
Quality data not reportedPrimary specialty
Dermatology Physician
Medicare Part D claims
1,160 45% vs specialty avg
Specialty distribution in Massachusetts
How Dermatology Physician compares to other specialties among Massachusetts 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 Dermatology 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 | 1003873126 |
|---|---|
| Specialty | Dermatology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/01/2006 |
License & disciplinary context - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Mitchell Rubenstein, MD. To verify Mitchell Rubenstein, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Mitchell Rubenstein, MD - brand share 14.0%
Dermatology Physician average
14% brand-name claims vs 86% generic, on 1,160 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.
1,160
Total Claims
$518K
Total Drug Cost
410
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,417.567
- Total Day Supply
- 39,388
- Brand vs Generic
- 14% brand / 86% generic
- Brand Drug Cost
- $483K
- Generic Drug Cost
- $35K
- Antibiotic Claims
- 67
Patient Demographics
- Average Patient Age
- 75.7 years
- Avg HCC Risk Score
- 1.08
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 17, 65-74: 157, 75-84: 188, 85+: 48
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mitchell Rubenstein, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Ketoconazole
Ketoconazole
166 claims
- Hydrocortisone
Hydrocortisone
80 claims
- Triamcinolone Acet…
Triamcinolone Acetonide
80 claims
- Fluorouracil 63
Fluorouracil
63 claims
- Betamethasone Dipr… 55
Betamethasone Diprop Augmented
55 claims
- Dupixent Syringe 54
Dupixent Syringe
54 claims
- Clobetasol Propion… 52
Clobetasol Propionate
52 claims
- Fluocinonide 52
Fluocinonide
52 claims
| Drug | Claims |
|---|---|
| Ketoconazole | 166 |
| Hydrocortisone | 80 |
| Triamcinolone Acetonide | 80 |
| Fluorouracil | 63 |
| Betamethasone Diprop Augmented Betamethasone/Propylene Glyc | 55 |
| Dupixent Syringe Dupilumab | 54 |
| Clobetasol Propionate | 52 |
| Fluocinonide | 52 |
| Doxycycline Hyclate | 49 |
| Halobetasol Propionate | 37 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatology Physician Overview
How Mitchell Rubenstein, MD fits within the Dermatology Physician landscape nationally.
15,011
Dermatology Physician Providers in US
53
States with Dermatology Physician
799
Avg Claims per Provider
Mitchell Rubenstein, MD's 1,160 claims are above the specialty average of 799.
Nationwide Dermatology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Rubenstein, both outside Massachusetts 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 Dermatology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Rubenstein.
One of 557 Dermatology Physician providers enrolled in Massachusetts, 5 are shown here.
Dr. Christopher Adams
M.D.
Boston, MA
Dr. Adewunmi Adelaja
MD, PHD
Boston, MA
Dr. David Aghassi
MD
Wellesley, MA
Dr. Abdul Ahmed
MD
Boston, MA
Dr. Abdullah Alajaji
MD
Boston, MA
Compare Dermatology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mitchell Rubenstein, MD's specialty? ▼
Mitchell Rubenstein, MD specializes in Dermatology Physician and practices in Brookline, Massachusetts. Credentials: MD.
How much does Mitchell Rubenstein, MD prescribe under Medicare Part D? ▼
In 2024, Mitchell Rubenstein, MD wrote 1,160 Medicare Part D claims totaling $518K in drug costs for 410 beneficiaries.
Where is Mitchell Rubenstein, MD located? ▼
Mitchell Rubenstein, MD is located at 111 CYPRESS ST, Brookline, MA, 02445. Phone: (857) 307-0896.
What is Mitchell Rubenstein, MD's NPI number? ▼
Mitchell Rubenstein, MD's National Provider Identifier (NPI) is 1003873126, issued on 05/01/2006.
Does Mitchell Rubenstein, MD prescribe more brand-name or generic drugs? ▼
Mitchell Rubenstein, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $483K in brand drug costs.
How many Dermatology Physician providers are there in the US? ▼
There are 15,011 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 799 Medicare Part D claims per year.
What drugs does Mitchell Rubenstein, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Mitchell Rubenstein, MD's most frequently prescribed drugs include Ketoconazole, Hydrocortisone, Triamcinolone Acetonide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mitchell Rubenstein, MD accept Medicare? ▼
Mitchell Rubenstein, MD appears in CMS Medicare data with 1,160 Part D claims and 410 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mitchell Rubenstein, MD's credentials? ▼
Mitchell Rubenstein, MD's NPI is 1003873126 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.