Registry data as of Aug 27, 2026
2026 NPPES data Specialist NPI 1053531467 M.D
Verify on CMS →

Nadim Dagher, M.D

Specialist in Westminster, California.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,567 in Specialist, 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
13K
Medicare Part D claims · 481 beneficiaries · Specialist avg: 2K
Generic prescribing
83%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
15.6/100
▼ 68 pts below national avg 83.5 · Penalty band
Industry payments
$1.5K
60 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Nadim Dagher, M.D reported a CMS MIPS final score of 15.6/100 - below the 83.5 national average - and filed 12,547 Medicare Part D claims in 2024.

15.6/100
MIPS score · -68 vs avg
13K
Part D claims, 2024
83%
generic prescribing
$1.5K
industry payments (Sunshine Act)

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 Nadim Dagher, 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 1053531467), first enumerated 04/26/2007.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 12,547 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 15.6/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Industry payment transparency

    $1.5K in reported industry payments (60 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

    California statewide board action statistics are published annually — these figures describe aggregate state activity, not Nadim Dagher, M.D's individual license status. Verify directly with the state medical board.

    Source: Medical Board of California annual report FY 2022-23

  • 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.

Compare Dagher with other Specialist providers

Same primary specialty, same federal CMS NPPES roster.

All 12 Specialist providers in Westminster, CA →

Also enrolled in California

Other specialties in Westminster: Pharmacist (151) · General Practice Dentistry (97) · Dentist (70) · Behavior Technician (64)

CMS NPPES provider registry desk

NPI 1053531467 · Specialist

NPI-10 · ENUM-MID · TAX-MEGA · MIPS-LOW · RX-HEAVY · BOOK-MID · PHOTO-FINISH

  • NPI-10 1053531467
  • ENUM-MID 2007
  • TAX-MEGA 70K Specialist
  • MIPS-LOW 15.6/100
  • RX-HEAVY 13K claims
  • BOOK-MID 6,640 in California
  • PHOTO-FINISH Donghai Ho, M.D. · ±0.1

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Nadim Dagher, 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.

16 ≥ 2nd percentile 2% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). This entry sits in this band. 20–30: 3,069 measured providers (1%). Above this entry. 30–40: 2,746 measured providers (1%). Above this entry. 40–50: 2,928 measured providers (1%). Above this entry. 50–60: 5,882 measured providers (1%). Above this entry. 60–70: 13,906 measured providers (3%). Above this entry. 70–80: 94,570 measured providers (21%). Above this entry. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

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 Nadim Dagher, M.D sits

This provider among specialist peers

Across the 4,261 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Nadim Dagher, M.D writes more Part D claims than 99% of them and scores higher on MIPS quality than 10% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.148.372.496.6Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 0Nadim Dagher, M.D, Part D claim volume, percentile in specialty: 99 · MIPS quality, percentile: 10
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one specialist peer from a representative sample of 60; the gold marker is Nadim Dagher, M.D. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Nadim Dagher, M.D?

Below national average

NPI registry status

Active

Issued 04/26/2007

NPI 1053531467

Primary specialty

Specialist

High-volume

69,567 US NPIs in this specialty

Medicare Part D claims

12,547 8× vs specialty avg

2024 prescription claims

Specialty avg: 1,524

MIPS final score

15.6/100 67.9 pts vs avg

Penalty band band

vs 83.5 national avg

Specialty distribution in California

How Specialist compares to other specialties among California providers

California providers
Behavior Technician17.9%Marriage & Family Therapist5.4%Student in an Organized Heal…5.1%Mental Health Counselor3.7%Pharmacist3.4%Clinical Social Worker3.1%Specialist0.7%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Nadim Dagher, M.D's 2023 MIPS final score plotted against the Specialist national average

Below national average
MIPS Final Score
15.6/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%15.6%
MIPS final score (Specialist) - 15.6/100 vs national avg 83.5
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

13950 MILTON AVE
Westminster, CA 92683
(714) 895-7944

Provider Details

NPI 1053531467
Specialty Specialist
Credentials M.D
Gender Male
NPI Issued 04/26/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

15.6259
Final Score
Measured-score avg: 83.5
0
Quality
52.0864
Cost

Reporting: Individual

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 Nadim Dagher, M.D. Source: openpaymentsdata.cms.gov.

Total received

$1.5K

Largest payer

Amgen 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.

License & disciplinary context - California Medical Board of California, FY 2022-23

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across 148,769 California physician licenses in effect in FY 2022-23 - they are NOT specific to Nadim Dagher, M.D. To verify Nadim Dagher, M.D's current license status, use the state board's own license search (see California license lookup), or the Federation of State Medical Boards (FSMB) verification service.

374
Administrative board actions, California FY 2022-23
2.51
Actions per 1,000 physician licenses in effect
California statewide rate
Probation
Most common action type
148 actions

Source: Medical Board of California Annual Report 2022-2023, page 18 (licenses in effect: page 12). Full breakdown by action type on the California discipline page.

Brand vs generic prescribing mix · Typical

Nadim Dagher, M.D - brand share 16.0%
Specialist average

16% brand-name claims vs 83% generic, on 12,547 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.

12,547
Total Claims
$1.5M
Total Drug Cost
481
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
22,253.9
Total Day Supply
642,288
Brand vs Generic
16% brand / 83% generic
Brand Drug Cost
$1.3M
Generic Drug Cost
$170K
Opioid Claims
130 (1.0% rate)
Antibiotic Claims
349

Patient Demographics

Average Patient Age
73.8 years
Avg HCC Risk Score
1.55
Gender Split
54% female / 46% male
Age Distribution
<65: 34, 65-74: 231, 75-84: 153, 85+: 63

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Nadim Dagher, M.D prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Atorvastatin Calcium
 676
Amlodipine Besylate
 469
Metformin Hcl
 430
Losartan Potassium
 365
Lisinopril
 325
Omeprazole
 323
Levothyroxine Sodium
 284
Gabapentin
 278
Rosuvastatin Calcium
 267
Hydrochlorothiazide
 237

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

More Specialist in CA → All providers in California → Compare specialties →

Specialist Overview

How Nadim Dagher, M.D fits within the Specialist landscape nationally.

69,567
Specialist Providers in US
55
States with Specialist
1,524
Avg Claims per Provider

Nadim Dagher, M.D's 12,547 claims are above the specialty average of 1,524.

Nationwide Specialist peers with similar MIPS or enrollment year

Two federal-record peer sets for Dagher, both outside California so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (15.6 here).

Donghai Ho 15.7 OH Miron Fayngersh 15.7 NY Hassan Shukri-Mahmod 15.8 NY Brenda Armenti-Kapros 15.8 VA

Same NPPES enumeration year (2007)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Nicole Custer Camp Hill, PA Alexander Johnson Portland, OR Alyce Hetherington Stuart, FL Irene Reece Woodstock, GA

Nearby Specialist Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Dagher.

One of 6,640 Specialist providers enrolled in California, 11 are shown on this page.

Farinaz Abdi
San Marcos, CA
Mai Abe
LE
Santa Monica, CA
Hamid Abedi
HEARING AID SPECIALI
San Diego, CA
Dr. Mehrad Abedi
M.D.
Sacramento, CA
Jonas Abella
San Francisco, CA

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is Nadim Dagher, M.D's specialty? ▼
Nadim Dagher, M.D specializes in Specialist and practices in Westminster, California. Credentials: M.D.
How much does Nadim Dagher, M.D prescribe under Medicare Part D? ▼
In 2024, Nadim Dagher, M.D wrote 12,547 Medicare Part D claims totaling $1.5M in drug costs for 481 beneficiaries.
What is Nadim Dagher, M.D's Medicare quality score? ▼
Nadim Dagher, M.D has a CMS MIPS Final Score of 15.6/100 (Quality: 0, Cost: 52.1). 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 Nadim Dagher, M.D located? ▼
Nadim Dagher, M.D is located at 13950 MILTON AVE, Westminster, CA, 92683. Phone: (714) 895-7944.
What is Nadim Dagher, M.D's NPI number? ▼
Nadim Dagher, M.D's National Provider Identifier (NPI) is 1053531467, issued on 04/26/2007.
Does Nadim Dagher, M.D prescribe more brand-name or generic drugs? ▼
Nadim Dagher, M.D's prescribing is 16% brand-name and 83% generic drugs by claim count, with $1.3M in brand drug costs.
Does Nadim Dagher, M.D prescribe opioids? ▼
Yes, Nadim Dagher, M.D had 130 opioid claims in 2024 with an opioid prescribing rate of 1.0%.
How many Specialist providers are there in the US? ▼
There are 69,567 Specialist providers across 55 states in the US. The average Specialist provider writes 1,524 Medicare Part D claims per year.
What drugs does Nadim Dagher, M.D prescribe most often? ▼
Based on 2024 Medicare Part D data, Nadim Dagher, M.D's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nadim Dagher, M.D accept Medicare? ▼
Nadim Dagher, M.D appears in CMS Medicare data with 12,547 Part D claims and 481 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nadim Dagher, M.D's credentials? ▼
Nadim Dagher, M.D's NPI is 1053531467 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

Compiled from official public sources by the editorial process.

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 September 2026.