2026 NPPES data Neuromuscular Medicine (Psychiatry & Neurology) Physician NPI 1558402032 M.D.
Verify on CMS →

NIZAR SOUAYAH, M.D.

Neuromuscular Medicine (Psychiatry & Neurology) Physician in NEWARK, New Jersey. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
506
Medicare Part D claims · 61 beneficiaries · Neuromuscular Medicine (Psychiatry & Neurology) Physician avg: 931
Generic prescribing
49%
generic claims · 51% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.2773/100
▼ 10 pts below national avg 83.1 · [object Object]
Industry payments
$44.6K
39 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: NIZAR SOUAYAH, M.D. is a Neuromuscular Medicine (Psychiatry & Neurology) Physician ([object Object]) practicing in NEWARK, New Jersey with a Medicare Part D prescribing footprint of 506 claims across 61 beneficiaries — 51% brand-name prescribing . Their CMS MIPS Final Score of 73.2773/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $44.6K across 39 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: NIZAR SOUAYAH, M.D. reported a CMS MIPS final score of 73.2773 out of 100, below the 83.1 national average, and filed 506 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

NIZAR SOUAYAH, 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).

NIZAR SOUAYAH, M.D. at a glance

Below national average

NPI registry status

Active

Issued 02/09/2007

NPI 1558402032

Primary specialty

Neuromuscular Medicine (Psychiatry & Neurology) Physician

Rare

336 US NPIs in this specialty

Medicare Part D claims

506 46% vs specialty avg

2023 prescription claims

Specialty avg: 931

MIPS final score

73.2773/100 9.822699999999998% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in New Jersey

How Neuromuscular Medicine (Psychiatry & Neurology) Physician compares to other specialties among New Jersey providers

New Jersey providers

Neuromuscular Medicine (Psychiatry & Neurology) Physician share within New Jersey

1. Neuromuscular Medicine (Psychiatry & Neurology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Neuromuscular Medicine (Psychiatry & Neurology) Physician share within New Jersey

Medicare quality performance — MIPS

NIZAR SOUAYAH, M.D.'s 2023 MIPS final score plotted against the Neuromuscular Medicine (Psychiatry & Neurology) Physician national average

Below national average
MIPS Final Score
73.2773/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Neuromuscular Medicine (Psychiatry & Neurology) Physician) — 73.2773/100 vs national avg 83.1

0%100%National avg83%73.3%
MIPS final score (Neuromuscular Medicine (Psychiatry & Neurology) Physician) — 73.2773/100 vs national avg 83.1

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).

NIZAR SOUAYAH, M.D. is a Neuromuscular Medicine (Psychiatry & Neurology) Physician provider practicing in NEWARK, New Jersey, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1558402032. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

NIZAR SOUAYAH, M.D. appears in the CMS NPPES registry as a Neuromuscular Medicine (Psychiatry & Neurology) Physician provider holding M.D. credentials at 90 BERGEN ST, NEWARK, NJ, 07103, with a listed phone of (973) 972-2550. NPI 1558402032 was issued on 02/09/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SOUAYAH most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 506 prescription claims written by this provider, covering 61 Medicare beneficiaries and totaling roughly $3.7 million in drug spend, split 51% brand-name and 49% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.2773/100 for the 2023 performance year (Quality 44.8928, Cost 47.6995), compared with the national average of 83.1.

Neuromuscular Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 336 enrolled providers across 44 states and an average of 931 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

90 BERGEN ST
NEWARK, NJ 07103

Provider Details

NPI 1558402032
Specialty Neuromuscular Medicine (Psychiatry & Neurology) Physician
Credentials M.D.
Gender Male
NPI Issued 02/09/2007

CMS Quality Score (MIPS)

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

73.2773
Final Score
Avg: 83.1
44.8928
Quality
47.6995
Cost
83
Promoting Interoperability

Reporting: Group practice

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 NIZAR SOUAYAH, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$44.6K

Largest payer

Takeda Pharmaceuticals U.S.A., Inc.

Most common payment type

Travel and Lodging

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 · Brand-heavy

NIZAR SOUAYAH, M.D. — brand share 51.0%
Specialty average (est.)

51% brand-name claims vs 49% generic, on 506 2023 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 2023.

506
Total Claims
$3.7M
Total Drug Cost
61
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
597
Total Day Supply
16,304
Brand vs Generic
51% brand / 49% generic
Brand Drug Cost
$3.7M
Generic Drug Cost
$18K

Patient Demographics

Average Patient Age
65.4 years
Avg HCC Risk Score
1.64
Gender Split
56% female / 44% male
Age Distribution
<65: 23, 65-74: 22, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Radicava Ors
Edaravone
62
Prednisone
53
Pyridostigmine Bromide
36
Relyvrio
Sod Phenylbutyrat/Taurursodiol
34
Gamunex-C
Immune Globul G/Gly/Iga Avg 46
28
Gabapentin
27
Riluzole
27
Gammagard Liquid
Immun Glob G(Igg)/Gly/Iga Ov50
25
Vyvgart
Efgartigimod Alfa-Fcab
21
Mycophenolate Mofetil
20

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

Neuromuscular Medicine (Psychiatry & Neurology) Physician Overview

How NIZAR SOUAYAH, M.D. fits within the Neuromuscular Medicine (Psychiatry & Neurology) Physician landscape nationally.

336
Neuromuscular Medicine (Psychiatry & Neurology) Physician Providers in US
44
States with Neuromuscular Medicine (Psychiatry & Neurology) Physician
931
Avg Claims per Provider

NIZAR SOUAYAH, M.D.'s 506 claims are below the specialty average of 931.

Nearby Neuromuscular Medicine (Psychiatry & Neurology) Physician Providers in New Jersey

Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as SOUAYAH.

Compare Neuromuscular Medicine (Psychiatry & Neurology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NIZAR SOUAYAH, M.D.'s specialty?
NIZAR SOUAYAH, M.D. specializes in Neuromuscular Medicine (Psychiatry & Neurology) Physician and practices in NEWARK, New Jersey. Credentials: M.D..
How much does NIZAR SOUAYAH, M.D. prescribe under Medicare Part D?
In 2023, NIZAR SOUAYAH, M.D. wrote 506 Medicare Part D claims totaling $3.7M in drug costs for 61 beneficiaries.
What is NIZAR SOUAYAH, M.D.'s Medicare quality score?
NIZAR SOUAYAH, M.D. has a CMS MIPS Final Score of 73.2773/100 (Quality: 44.8928, Cost: 47.6995). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is NIZAR SOUAYAH, M.D. located?
NIZAR SOUAYAH, M.D. is located at 90 BERGEN ST, NEWARK, NJ, 07103. Phone: (973) 972-2550.
What is NIZAR SOUAYAH, M.D.'s NPI number?
NIZAR SOUAYAH, M.D.'s National Provider Identifier (NPI) is 1558402032, issued on 02/09/2007.
Does NIZAR SOUAYAH, M.D. prescribe more brand-name or generic drugs?
NIZAR SOUAYAH, M.D.'s prescribing is 51% brand-name and 49% generic drugs by claim count, with $3.7M in brand drug costs.
How many Neuromuscular Medicine (Psychiatry & Neurology) Physician providers are there in the US?
There are 336 Neuromuscular Medicine (Psychiatry & Neurology) Physician providers across 44 states in the US. The average Neuromuscular Medicine (Psychiatry & Neurology) Physician provider writes 931 Medicare Part D claims per year.
What drugs does NIZAR SOUAYAH, M.D. prescribe most often?
Based on 2023 Medicare Part D data, NIZAR SOUAYAH, M.D.'s most frequently prescribed drugs include Radicava Ors, Prednisone, Pyridostigmine Bromide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NIZAR SOUAYAH, M.D. accept Medicare?
NIZAR SOUAYAH, M.D. appears in CMS Medicare data with 506 Part D claims and 61 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NIZAR SOUAYAH, M.D.'s credentials?
NIZAR SOUAYAH, M.D.'s NPI is 1558402032 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

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 (2023). 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 April 2026 (NPPES) / 2023 (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