NPI registry status
Active
2026 NPPES data Infectious Disease Physician NPI 1023010055 M.D.
Verify on CMS → Stuart Feinstein, M.D.
Infectious Disease Physician in Poughkeepsie, 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 8,537 in Infectious Disease 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
282
Medicare Part D claims · 45 beneficiaries · Infectious Disease Physician avg: 807
Generic prescribing
44%
generic claims · 56% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.2/100
▲ 11 pts above national avg 83.5 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Stuart Feinstein, M.D. reported a CMS MIPS final score of 94.2/100 - above the 83.5 national average - and filed 282 Medicare Part D claims in 2024.
- 94.2/100
- MIPS score · +11 vs avg
- 282
- Part D claims, 2024
- 44%
- generic prescribing
- Likely
- board-certified (heuristic)
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 Stuart Feinstein, M.D.
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1023010055), first enumerated 08/10/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 282 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 94.2/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- 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.
- State context
State board disciplinary context
New York statewide board action statistics are published annually — these figures describe aggregate state activity, not Stuart Feinstein, M.D.'s individual license status. Verify directly with the state medical board.
Source: NYSBPMC 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 1023010055 · Infectious Disease Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-ELITE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1023010055
- ENUM-LEGACY 2005
- TAX-MID 9K Infectious Disease
- MIPS-ELITE 94.2/100
- RX-LIGHT 282
- BOOK-LIGHT 791 in New York
- PHOTO-FINISH Martha Desbiens · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Feinstein · this…
Feinstein · this provider
94.2 MIPS pts
- Sushma Rao · hig…
Sushma Rao
94.2 MIPS pts
- Martha Desbiens …
Martha Desbiens
94.2 MIPS pts
- Waleed Malik · n…
Waleed Malik
94.2 MIPS pts
- Paul Nee · near
Paul Nee
94.2 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Stuart Feinstein, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
94 ≥ 73rd percentile 73% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Stuart Feinstein, M.D. sits
This provider among infectious disease physician peers
Across the 2,130 infectious disease physician providers who report both Medicare Part D prescribing and a MIPS quality score, Stuart Feinstein, M.D. writes more Part D claims than 42% of them and scores higher on MIPS quality than 74% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one infectious disease physician peer from a representative sample of 60; the gold marker is Stuart Feinstein, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Stuart Feinstein, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Stuart Feinstein, M.D.?
High performer (top quartile)Primary specialty
Infectious Disease Physician
Medicare Part D claims
282 65% vs specialty avg
MIPS final score
94.2/100 10.7 pts vs avg
Specialty distribution in New York
How Infectious Disease Physician compares to other specialties among New York providers
Medicare quality performance, MIPS
Stuart Feinstein, M.D.'s 2023 MIPS final score plotted against the Infectious Disease Physician national average
- MIPS Final Score
- 94.2/100
- vs 83.5 national avg · 2023 performance year
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 | 1023010055 |
|---|---|
| Specialty | Infectious Disease Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/10/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
94.2464
Final Score
Measured-score avg: 83.5
78.2615
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
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 Stuart Feinstein, M.D.. To verify Stuart Feinstein, M.D.'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 · Brand-heavy
Stuart Feinstein, M.D. - brand share 56.0%
Infectious Disease Physician average
56% brand-name claims vs 44% generic, on 282 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.
282
Total Claims
$578K
Total Drug Cost
45
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 358.033
- Total Day Supply
- 10,472
- Brand vs Generic
- 56% brand / 44% generic
- Brand Drug Cost
- $553K
- Generic Drug Cost
- $26K
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 68.7 years
- Avg HCC Risk Score
- 1.72
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 16, 65-74: 19, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Stuart Feinstein, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Biktarvy
Biktarvy
47 claims
- Descovy
Descovy
25 claims
- Triumeq
Triumeq
20 claims
- Symtuza 15
Symtuza
15 claims
- Dapsone 14
Dapsone
14 claims
- Finasteride 13
Finasteride
13 claims
- Prezcobix 12
Prezcobix
12 claims
| Drug | Claims |
|---|---|
| Biktarvy Bictegrav/Emtricit/Tenofov Ala | 47 |
| Descovy Emtricitabine/Tenofov Alafenam | 25 |
| Triumeq Abacavir/Dolutegravir/Lamivudi | 20 |
| Symtuza Darunavir/Cob/Emtri/Tenof Alaf | 15 |
| Dapsone | 14 |
| Finasteride | 13 |
| Prezcobix Darunavir/Cobicistat | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Infectious Disease Physician Overview
How Stuart Feinstein, M.D. fits within the Infectious Disease Physician landscape nationally.
8,537
Infectious Disease Physician Providers in US
54
States with Infectious Disease Physician
807
Avg Claims per Provider
Stuart Feinstein, M.D.'s 282 claims are below the specialty average of 807.
Nationwide Infectious Disease Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Feinstein, both outside New York so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (94.2 here).
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Infectious Disease Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Feinstein.
One of 791 Infectious Disease Physician providers enrolled in New York, 5 are shown here.
Dr. Mekonnen Abebe
M.D.
New York, NY
Dr. Maryam Abul
MD
New York, NY
Dr. Jacqueline Achkar
MD
Bronx, NY
Joel Ackelsberg
Long Island City, NY
Dr. Adedayo Adedeji
M.D.
Staten Island, NY
Compare Infectious Disease Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Stuart Feinstein, M.D.'s specialty? ▼
Stuart Feinstein, M.D. specializes in Infectious Disease Physician and practices in Poughkeepsie, New York. Credentials: M.D..
How much does Stuart Feinstein, M.D. prescribe under Medicare Part D? ▼
In 2024, Stuart Feinstein, M.D. wrote 282 Medicare Part D claims totaling $578K in drug costs for 45 beneficiaries.
What is Stuart Feinstein, M.D.'s Medicare quality score? ▼
Stuart Feinstein, M.D. has a CMS MIPS Final Score of 94.2/100 (Quality: 78.3). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Stuart Feinstein, M.D. located? ▼
Stuart Feinstein, M.D. is located at 9 LIVINGSTON STREET, Poughkeepsie, NY, 12601. Phone: (845) 471-0232.
What is Stuart Feinstein, M.D.'s NPI number? ▼
Stuart Feinstein, M.D.'s National Provider Identifier (NPI) is 1023010055, issued on 08/10/2005.
Does Stuart Feinstein, M.D. prescribe more brand-name or generic drugs? ▼
Stuart Feinstein, M.D.'s prescribing is 56% brand-name and 44% generic drugs by claim count, with $553K in brand drug costs.
How many Infectious Disease Physician providers are there in the US? ▼
There are 8,537 Infectious Disease Physician providers across 54 states in the US. The average Infectious Disease Physician provider writes 807 Medicare Part D claims per year.
What drugs does Stuart Feinstein, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Stuart Feinstein, M.D.'s most frequently prescribed drugs include Biktarvy, Descovy, Triumeq. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stuart Feinstein, M.D. accept Medicare? ▼
Stuart Feinstein, M.D. appears in CMS Medicare data with 282 Part D claims and 45 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stuart Feinstein, M.D.'s credentials? ▼
Stuart Feinstein, M.D.'s NPI is 1023010055 with credentials M.D.. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.