2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1679881346 DO
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NOURIEL NIAMEHR, DO

Physical Medicine & Rehabilitation Physician in RESEDA, California. 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
5K
Medicare Part D claims · 874 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781
Industry payments
$597.68
35 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

NOURIEL NIAMEHR, DO filed 5,291 Medicare Part D claims in 2023 as a Physical Medicine & Rehabilitation Physician in RESEDA, California.

5K
Part D claims, 2023
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.

NOURIEL NIAMEHR, DO's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

5,291 Top 6% higher than 94% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

NOURIEL NIAMEHR, DO 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 NOURIEL NIAMEHR, DO?

Quality data not reported

NPI registry status

Active

Issued 09/16/2010

NPI 1679881346

Primary specialty

Physical Medicine & Rehabilitation Physician

Mid-sized

15,306 US NPIs in this specialty

Medicare Part D claims

5,291 577% vs specialty avg

2023 prescription claims

Specialty avg: 781

Specialty distribution in California

How Physical Medicine & Rehabilitation Physician compares to other specialties among California providers

California providers

Physical Medicine & Rehabilitation Physician share within California

1. Physical Medicine & Rehabilitation Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physical Medicine & Rehabilitation Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Physical Medicine & Rehabilitation Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Physical Medicine & Rehabilitation Physician ABMS/AOA estimate

Est. board-certified rate (Physical Medicine & Rehabilitation Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physical Medicine & Rehabilitation Physician) — ABMS / AOA estimate

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).

NOURIEL NIAMEHR, DO appears in the CMS NPPES registry as a Physical Medicine & Rehabilitation Physician provider holding DO credentials at 18040 SHERMAN WAY STE 200, RESEDA, CA, 91335, with a listed phone of (818) 212-2223. NPI 1679881346 was issued on 09/16/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NIAMEHR 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 5,291 prescription claims written by this provider, covering 874 Medicare beneficiaries and totaling roughly $707K in drug spend, with an opioid prescribing rate of 39.6%. 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.

Physical Medicine & Rehabilitation Physician is a mid-sized specialty nationwide, with 15,306 enrolled providers across 54 states and an average of 781 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

18040 SHERMAN WAY STE 200
RESEDA, CA 91335

Provider Details

NPI 1679881346
Specialty Physical Medicine & Rehabilitation Physician
Credentials DO
Gender Male
NPI Issued 09/16/2010

Hospital and facility affiliations

Facilities where NOURIEL NIAMEHR, DO 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.

ALGOS INC A MEDICAL CORPORATION
PASADENA, CA
HASAN BADDAY MD PC
LOS ANGELES, CA
HEALTHCARE PARTNERS AFFILIATES MEDICAL GROUP
EL MONTE, CA

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 NOURIEL NIAMEHR, DO. Source: openpaymentsdata.cms.gov.

Total received

$598

Largest payer

IBSA Pharma 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 MBC 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 ~150K California medical licensees in 2023 — they are NOT specific to NOURIEL NIAMEHR, DO. To verify NOURIEL NIAMEHR, DO's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

5,291
Total Claims
$707K
Total Drug Cost
874
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,099
Total Day Supply
168,428
Generic Drug Cost
$325K
Opioid Claims
2,097 (39.6% rate)

Patient Demographics

Average Patient Age
71.8 years
Avg HCC Risk Score
2.36
Gender Split
60% female / 40% male
Age Distribution
<65: 148, 65-74: 387, 75-84: 262, 85+: 77

Top Prescribed Drugs (Medicare Part D)

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

What NOURIEL NIAMEHR, DO prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Diclofenac Sodium
1,101
Tramadol Hcl
560
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
548
Gabapentin
405
Duloxetine Hcl
342
Acetaminophen-Codeine
Acetaminophen With Codeine
276
Pregabalin
224
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
136
Tizanidine Hcl
121
Buprenorphine Hcl
99

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

Physical Medicine & Rehabilitation Physician Overview

How NOURIEL NIAMEHR, DO fits within the Physical Medicine & Rehabilitation Physician landscape nationally.

15,306
Physical Medicine & Rehabilitation Physician Providers in US
54
States with Physical Medicine & Rehabilitation Physician
781
Avg Claims per Provider

NOURIEL NIAMEHR, DO's 5,291 claims are above the specialty average of 781.

Nearby Physical Medicine & Rehabilitation Physician Providers in California

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

Compare Physical Medicine & Rehabilitation Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NOURIEL NIAMEHR, DO's specialty?
NOURIEL NIAMEHR, DO specializes in Physical Medicine & Rehabilitation Physician and practices in RESEDA, California. Credentials: DO.
How much does NOURIEL NIAMEHR, DO prescribe under Medicare Part D?
In 2023, NOURIEL NIAMEHR, DO wrote 5,291 Medicare Part D claims totaling $707K in drug costs for 874 beneficiaries.
Where is NOURIEL NIAMEHR, DO located?
NOURIEL NIAMEHR, DO is located at 18040 SHERMAN WAY STE 200, RESEDA, CA, 91335. Phone: (818) 212-2223.
What is NOURIEL NIAMEHR, DO's NPI number?
NOURIEL NIAMEHR, DO's National Provider Identifier (NPI) is 1679881346, issued on 09/16/2010.
Does NOURIEL NIAMEHR, DO prescribe opioids?
Yes, NOURIEL NIAMEHR, DO had 2,097 opioid claims in 2023 with an opioid prescribing rate of 39.6%.
How many Physical Medicine & Rehabilitation Physician providers are there in the US?
There are 15,306 Physical Medicine & Rehabilitation Physician providers across 54 states in the US. The average Physical Medicine & Rehabilitation Physician provider writes 781 Medicare Part D claims per year.
What drugs does NOURIEL NIAMEHR, DO prescribe most often?
Based on 2023 Medicare Part D data, NOURIEL NIAMEHR, DO's most frequently prescribed drugs include Diclofenac Sodium, Tramadol Hcl, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NOURIEL NIAMEHR, DO accept Medicare?
NOURIEL NIAMEHR, DO appears in CMS Medicare data with 5,291 Part D claims and 874 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NOURIEL NIAMEHR, DO's credentials?
NOURIEL NIAMEHR, DO's NPI is 1679881346 with credentials DO. 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.
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