NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1790975191 M.D.
Verify on CMS → Maroun Azar, M.D.
Nephrology Physician in Warwick, Rhode Island.
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
914
Medicare Part D claims · 190 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$97.99
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Maroun Azar, M.D. filed 914 Medicare Part D claims in 2024 as a Nephrology Physician in Warwick, Rhode Island, prescribing 83% generic.
- 914
- Part D claims, 2024
- 83%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥74th
- 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 Maroun Azar, M.D.
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 1790975191), first enumerated 07/31/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 914 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
3 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$97.99 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1790975191 · Nephrology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1790975191
- ENUM-MID 2007
- TAX-MID 11K Nephrology Physician
- RX-LIGHT 914
- BOOK-THIN 35 in Rhode Island
- PHOTO-ENUM Laura Hesemann · 2007
Maroun Azar, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
914 ≥ 74th percentile 74% 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)
Maroun Azar, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations - 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 Maroun Azar, M.D.?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
914 40% vs specialty avg
Specialty distribution in Rhode Island
How Nephrology Physician compares to other specialties among Rhode Island 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 Nephrology 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 | 1790975191 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/31/2007 |
Hospital and facility affiliations
Facilities where Maroun Azar, M.D. 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.
According to CMS billing records, Maroun Azar, M.D. is affiliated with 3 Medicare-billing facilities.
Brown Medicine
Warwick, RI
Lifespan Physician Group Inc
Warwick, RI
Silver Spring Health Care Management Inc
Wakefield, RI
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 Maroun Azar, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$98
Largest payer
Travere Therapeutics, Inc.
Most common payment type
Food and Beverage
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.
Brand vs generic prescribing mix · Typical
Maroun Azar, M.D. - brand share 17.0%
Nephrology Physician average
17% brand-name claims vs 83% generic, on 914 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.
914
Total Claims
$186K
Total Drug Cost
190
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,039.1
- Total Day Supply
- 60,413
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $169K
- Generic Drug Cost
- $16K
Patient Demographics
- Average Patient Age
- 72.6 years
- Avg HCC Risk Score
- 2.70
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 27, 65-74: 75, 75-84: 71, 85+: 17
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Maroun Azar, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Lisinopril
Lisinopril
114 claims
- Amlodipine Besylate
Amlodipine Besylate
92 claims
- Chlorthalidone
Chlorthalidone
92 claims
- Torsemide
Torsemide
73 claims
- Losartan Potassium
Losartan Potassium
55 claims
- Farxiga
Farxiga
54 claims
- Furosemide 38
Furosemide
38 claims
- Bumetanide 26
Bumetanide
26 claims
| Drug | Claims |
|---|---|
| Lisinopril | 114 |
| Amlodipine Besylate | 92 |
| Chlorthalidone | 92 |
| Torsemide | 73 |
| Losartan Potassium | 55 |
| Farxiga Dapagliflozin Propanediol | 54 |
| Furosemide | 38 |
| Bumetanide | 26 |
| Jardiance Empagliflozin | 25 |
| Hydrochlorothiazide | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Maroun Azar, M.D. 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
Maroun Azar, M.D.'s 914 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 Azar, both outside Rhode Island 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 Nephrology Physician Providers in Rhode Island
Other clinicians with the same primary specialty enrolled in Rhode Island, drawn from the same CMS NPPES roster as Azar.
One of 35 Nephrology Physician providers enrolled in Rhode Island, 5 are shown here.
Dr. J Gary Abuelo
MD
Riverside, RI
Dr. Rasha Alawieh
MD
Providence, RI
Dr. Keith Bartolomei
M.D.
Providence, RI
Dr. George Bayliss
M.D.
Riverside, RI
Dr. Nelson Chu
MD
Warwick, RI
Compare Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Maroun Azar, M.D.'s specialty? ▼
Maroun Azar, M.D. specializes in Nephrology Physician and practices in Warwick, Rhode Island. Credentials: M.D..
How much does Maroun Azar, M.D. prescribe under Medicare Part D? ▼
In 2024, Maroun Azar, M.D. wrote 914 Medicare Part D claims totaling $186K in drug costs for 190 beneficiaries.
Where is Maroun Azar, M.D. located? ▼
Maroun Azar, M.D. is located at 250 CENTERVILLE RD BLDG E, Warwick, RI, 02886. Phone: (401) 490-3838.
What is Maroun Azar, M.D.'s NPI number? ▼
Maroun Azar, M.D.'s National Provider Identifier (NPI) is 1790975191, issued on 07/31/2007.
Does Maroun Azar, M.D. prescribe more brand-name or generic drugs? ▼
Maroun Azar, M.D.'s prescribing is 17% brand-name and 83% generic drugs by claim count, with $169K 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 Maroun Azar, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Maroun Azar, M.D.'s most frequently prescribed drugs include Lisinopril, Amlodipine Besylate, Chlorthalidone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Maroun Azar, M.D. accept Medicare? ▼
Maroun Azar, M.D. appears in CMS Medicare data with 914 Part D claims and 190 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Maroun Azar, M.D.'s credentials? ▼
Maroun Azar, M.D.'s NPI is 1790975191 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.
- 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.