2026 NPPES data Neurology Physician NPI 1114989324 M.D.
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DUFF RARDIN, M.D.

Neurology Physician in ARDEN, North Carolina. 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
3K
Medicare Part D claims · 529 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.5111/100
▲ 10 pts above national avg 83.1 · [object Object]
Industry payments
$164.92
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DUFF RARDIN, M.D. reported a CMS MIPS final score of 93.5111/100 — above the 83.1 national average — and filed 2,809 Medicare Part D claims in 2023.

93.5111/100
MIPS score · +10 vs avg
3K
Part D claims, 2023
95%
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.

DUFF RARDIN, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

94 Top 29% higher than 71% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

DUFF RARDIN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 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 DUFF RARDIN, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 04/04/2006

NPI 1114989324

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

2,809 115% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

MIPS final score

93.5111/100 10.411100000000005% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in North Carolina

How Neurology Physician compares to other specialties among North Carolina providers

North Carolina providers

Neurology Physician share within North Carolina

1. Neurology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Neurology Physician share within North Carolina

Medicare quality performance — MIPS

DUFF RARDIN, M.D.'s 2023 MIPS final score plotted against the Neurology Physician national average

High performer (top quartile)
MIPS Final Score
93.5111/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Neurology Physician) — 93.5111/100 vs national avg 83.1

0%100%National avg83%93.5%
MIPS final score (Neurology Physician) — 93.5111/100 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).

DUFF RARDIN, M.D. is a Neurology Physician provider practicing in ARDEN, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1114989324. 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.

DUFF RARDIN, M.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D. credentials at 2775 HENDERSONVILLE RD STE 250, ARDEN, NC, 28704, with a listed phone of (828) 435-8250. NPI 1114989324 was issued on 04/04/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RARDIN 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 2,809 prescription claims written by this provider, covering 529 Medicare beneficiaries and totaling roughly $549K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 0.6%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.5111/100 for the 2023 performance year (Quality 84.2392), compared with the national average of 83.1.

Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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

2775 HENDERSONVILLE RD STE 250
ARDEN, NC 28704

Provider Details

NPI 1114989324
Specialty Neurology Physician
Credentials M.D.
Gender Male
NPI Issued 04/04/2006

CMS Quality Score (MIPS)

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

93.5111
Final Score
Avg: 83.1
84.2392
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where DUFF RARDIN, 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.

CAROLINA PHYSICAL THERAPY ASSOCIATES LLC
HENDERSONVILLE, NC
HENDERSON COUNTY HOSPITAL CORPORATION
HENDERSONVILLE, NC

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 DUFF RARDIN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$165

Largest payer

LivaNova USA, 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 · Generic-heavy

DUFF RARDIN, M.D. — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 2,809 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.

2,809
Total Claims
$549K
Total Drug Cost
529
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,212
Total Day Supply
154,229
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$418K
Generic Drug Cost
$131K
Opioid Claims
17 (0.6% rate)

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
1.39
Gender Split
51% female / 49% male
Age Distribution
<65: 88, 65-74: 182, 75-84: 207, 85+: 52

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Carbidopa-Levodopa
Carbidopa/Levodopa
331
Gabapentin
228
Donepezil Hcl
126
Memantine Hcl
122
Levetiracetam
110
Zonisamide
98
Ropinirole Hcl
91
Topiramate
72
Primidone
70
Duloxetine Hcl
66

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

Neurology Physician Overview

How DUFF RARDIN, M.D. fits within the Neurology Physician landscape nationally.

19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider

DUFF RARDIN, M.D.'s 2,809 claims are above the specialty average of 1,309.

Nearby Neurology Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as RARDIN.

Compare Neurology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DUFF RARDIN, M.D.'s specialty?
DUFF RARDIN, M.D. specializes in Neurology Physician and practices in ARDEN, North Carolina. Credentials: M.D..
How much does DUFF RARDIN, M.D. prescribe under Medicare Part D?
In 2023, DUFF RARDIN, M.D. wrote 2,809 Medicare Part D claims totaling $549K in drug costs for 529 beneficiaries.
What is DUFF RARDIN, M.D.'s Medicare quality score?
DUFF RARDIN, M.D. has a CMS MIPS Final Score of 93.5111/100 (Quality: 84.2392). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is DUFF RARDIN, M.D. located?
DUFF RARDIN, M.D. is located at 2775 HENDERSONVILLE RD STE 250, ARDEN, NC, 28704. Phone: (828) 435-8250.
What is DUFF RARDIN, M.D.'s NPI number?
DUFF RARDIN, M.D.'s National Provider Identifier (NPI) is 1114989324, issued on 04/04/2006.
Does DUFF RARDIN, M.D. prescribe more brand-name or generic drugs?
DUFF RARDIN, M.D.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $418K in brand drug costs.
Does DUFF RARDIN, M.D. prescribe opioids?
Yes, DUFF RARDIN, M.D. had 17 opioid claims in 2023 with an opioid prescribing rate of 0.6%.
How many Neurology Physician providers are there in the US?
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does DUFF RARDIN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DUFF RARDIN, M.D.'s most frequently prescribed drugs include Carbidopa-Levodopa, Gabapentin, Donepezil Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DUFF RARDIN, M.D. accept Medicare?
DUFF RARDIN, M.D. appears in CMS Medicare data with 2,809 Part D claims and 529 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DUFF RARDIN, M.D.'s credentials?
DUFF RARDIN, M.D.'s NPI is 1114989324 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