NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1447232046 MD
Verify on CMS → Gary Noroian, MD
Nephrology Physician in Leominster, 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 10,806 in Nephrology 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
771
Medicare Part D claims · 159 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
97/100
▲ 14 pts above national avg 83.5 · Exceptional
Industry payments
$16.7
8 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Gary Noroian, MD reported a CMS MIPS final score of 97/100 - above the 83.5 national average - and filed 771 Medicare Part D claims in 2024.
- 97/100
- MIPS score · +14 vs avg
- 771
- Part D claims, 2024
- 90%
- 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 Gary Noroian, MD
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 1447232046), first enumerated 11/18/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 771 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 97/100 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.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$16.7 in reported industry payments (8 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Gary Noroian, 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 1447232046 · Nephrology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-ELITE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1447232046
- ENUM-LEGACY 2005
- TAX-MID 11K Nephrology Physician
- MIPS-ELITE 97/100
- RX-LIGHT 771
- BOOK-THIN 314 in Massachusetts
- PHOTO-FINISH Mokhtar Nasir, MD · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Carlos Flombaum,…
Carlos Flombaum, MD
96.9 MIPS pts
- Ilya Glezerman, …
Ilya Glezerman, MD
96.9 MIPS pts
- Noroian · this p…
Noroian · this provider
97 MIPS pts
- Mokhtar Nasir, M…
Mokhtar Nasir, MD
97 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Gary Noroian, MD'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.
97 ≥ 84th percentile 84% 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 Gary Noroian, MD sits
This provider among nephrology physician peers
Across the 2,230 nephrology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Gary Noroian, MD writes more Part D claims than 39% of them and scores higher on MIPS quality than 85% - 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 nephrology physician peer from a representative sample of 60; the gold marker is Gary Noroian, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Gary Noroian, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Gary Noroian, MD?
High performer (top quartile)Primary specialty
Nephrology Physician
Medicare Part D claims
771 49% vs specialty avg
MIPS final score
97/100 13.5 pts vs avg
Specialty distribution in Massachusetts
How Nephrology Physician compares to other specialties among Massachusetts providers
Medicare quality performance, MIPS
Gary Noroian, MD's 2023 MIPS final score plotted against the Nephrology Physician national average
- MIPS Final Score
- 97/100
- 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 | 1447232046 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/18/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
97.0218
Final Score
Measured-score avg: 83.5
78.0983
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Gary Noroian, 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.
Umass Memorial Medical Group Inc
Clinton, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Gary Noroian, MD. Source: openpaymentsdata.cms.gov.
Total received
$17
Largest payer
Travere Therapeutics, Inc.
Most common payment type
Education
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Gary Noroian, MD. To verify Gary Noroian, 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
Gary Noroian, MD - brand share 10.0%
Nephrology Physician average
10% brand-name claims vs 90% generic, on 771 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.
771
Total Claims
$74K
Total Drug Cost
159
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,628.767
- Total Day Supply
- 48,340
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $58K
- Generic Drug Cost
- $15K
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 2.63
- Gender Split
- 44% female / 56% male
- Age Distribution
- <65: 23, 65-74: 58, 75-84: 56, 85+: 22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Gary Noroian, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Amlodipine Besylate
Amlodipine Besylate
121 claims
- Lisinopril
Lisinopril
95 claims
- Losartan Potassium
Losartan Potassium
65 claims
- Calcitriol
Calcitriol
62 claims
- Carvedilol
Carvedilol
51 claims
- Spironolactone 40
Spironolactone
40 claims
- Farxiga 36
Farxiga
36 claims
- Valsartan 36
Valsartan
36 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 121 |
| Lisinopril | 95 |
| Losartan Potassium | 65 |
| Calcitriol | 62 |
| Carvedilol | 51 |
| Spironolactone | 40 |
| Farxiga Dapagliflozin Propanediol | 36 |
| Valsartan | 36 |
| Furosemide | 35 |
| Chlorthalidone | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Gary Noroian, MD fits within the Nephrology Physician landscape nationally.
10,806
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,511
Avg Claims per Provider
Gary Noroian, MD's 771 claims are below the specialty average of 1,511.
Nationwide Nephrology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Noroian, both outside Massachusetts so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (97 here).
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nephrology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Noroian.
One of 314 Nephrology Physician providers enrolled in Massachusetts, 5 are shown here.
Dr. Amtul Aala
MD
Boston, MA
Dr. Reza Abdi
MD
Boston, MA
Vivian Abernethy
Boston, MA
Dr. Rekha Abichandani
M.D.
Cambridge, MA
Dr. Konstantin Abramov
M.D.
Worcester, MA
Compare Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Gary Noroian, MD's specialty? ▼
Gary Noroian, MD specializes in Nephrology Physician and practices in Leominster, Massachusetts. Credentials: MD.
How much does Gary Noroian, MD prescribe under Medicare Part D? ▼
In 2024, Gary Noroian, MD wrote 771 Medicare Part D claims totaling $74K in drug costs for 159 beneficiaries.
What is Gary Noroian, MD's Medicare quality score? ▼
Gary Noroian, MD has a CMS MIPS Final Score of 97/100 (Quality: 78.1). 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 Gary Noroian, MD located? ▼
Gary Noroian, MD is located at 50 MEMORIAL DR, Leominster, MA, 01453. Phone: (978) 466-4535.
What is Gary Noroian, MD's NPI number? ▼
Gary Noroian, MD's National Provider Identifier (NPI) is 1447232046, issued on 11/18/2005.
Does Gary Noroian, MD prescribe more brand-name or generic drugs? ▼
Gary Noroian, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $58K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,806 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,511 Medicare Part D claims per year.
What drugs does Gary Noroian, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Gary Noroian, MD's most frequently prescribed drugs include Amlodipine Besylate, Lisinopril, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gary Noroian, MD accept Medicare? ▼
Gary Noroian, MD appears in CMS Medicare data with 771 Part D claims and 159 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gary Noroian, MD's credentials? ▼
Gary Noroian, MD's NPI is 1447232046 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.
- 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.