2026 NPPES data Allergy & Immunology Physician NPI 1366433898 MD
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WINSTON ELLISTON, MD

Allergy & Immunology Physician in ASHEVILLE, 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
480
Medicare Part D claims · 98 beneficiaries · Allergy & Immunology Physician avg: 764
MIPS score
27.6264/100
▼ 55 pts below national avg 83.1 · [object Object]
What the federal data reveals: WINSTON ELLISTON, MD is a Allergy & Immunology Physician ([object Object]) practicing in ASHEVILLE, North Carolina with a Medicare Part D prescribing footprint of 480 claims across 98 beneficiaries . Their CMS MIPS Final Score of 27.6264/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: WINSTON ELLISTON, MD reported a CMS MIPS final score of 27.6264 out of 100, below the 83.1 national average, and filed 480 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)

WINSTON ELLISTON, MD 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).

WINSTON ELLISTON, MD at a glance

Below national average

NPI registry status

Active

Issued 11/03/2005

NPI 1366433898

Primary specialty

Allergy & Immunology Physician

Niche

3,390 US NPIs in this specialty

Medicare Part D claims

480 37% vs specialty avg

2023 prescription claims

Specialty avg: 764

MIPS final score

27.6264/100 55.47359999999999% pts

Below average band

vs 83.1 national avg

Specialty distribution in North Carolina

How Allergy & Immunology Physician compares to other specialties among North Carolina providers

North Carolina providers

Allergy & Immunology Physician share within North Carolina

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

Medicare quality performance — MIPS

WINSTON ELLISTON, MD's 2023 MIPS final score plotted against the Allergy & Immunology Physician national average

Below national average
MIPS Final Score
27.6264/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Allergy & Immunology Physician) — 27.6264/100 vs national avg 83.1

0%100%National avg83%27.6%
MIPS final score (Allergy & Immunology Physician) — 27.6264/100 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).

WINSTON ELLISTON, MD is a Allergy & Immunology Physician provider practicing in ASHEVILLE, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1366433898. 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.

WINSTON ELLISTON, MD appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding MD credentials at 14 MCDOWELL ST, ASHEVILLE, NC, 28801, with a listed phone of (828) 255-3749. NPI 1366433898 was issued on 11/03/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ELLISTON 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 480 prescription claims written by this provider, covering 98 Medicare beneficiaries and totaling roughly $66K in drug spend. 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 27.6264/100 for the 2023 performance year (Quality 0, Cost 92.088), compared with the national average of 83.1.

Allergy & Immunology Physician is a narrow specialty nationwide, with 3,390 enrolled providers across 52 states and an average of 764 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

14 MCDOWELL ST
ASHEVILLE, NC 28801

Provider Details

NPI 1366433898
Specialty Allergy & Immunology Physician
Credentials MD
Gender Male
NPI Issued 11/03/2005

CMS Quality Score (MIPS)

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

27.6264
Final Score
Avg: 83.1
0
Quality
92.088
Cost
0
Promoting Interoperability

Reporting: Individual

Medicare Part D Prescribing Data

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

480
Total Claims
$66K
Total Drug Cost
98
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
782
Total Day Supply
22,866
Generic Drug Cost
$12K

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
0.76
Gender Split
76% female / 24% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Montelukast Sodium
126
Azelastine Hcl
80
Fluticasone Propionate
76
Ipratropium Bromide
39
Advair Diskus
Fluticasone Propion/Salmeterol
31
Famotidine
16
Mometasone Furoate
15
Symbicort
Budesonide/Formoterol Fumarate
12
Albuterol Sulfate Hfa
Albuterol Sulfate
11
Epinephrine
11

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

Allergy & Immunology Physician Overview

How WINSTON ELLISTON, MD fits within the Allergy & Immunology Physician landscape nationally.

3,390
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider

WINSTON ELLISTON, MD's 480 claims are below the specialty average of 764.

Nearby Allergy & Immunology Physician Providers in North Carolina

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

Compare Allergy & Immunology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WINSTON ELLISTON, MD's specialty?
WINSTON ELLISTON, MD specializes in Allergy & Immunology Physician and practices in ASHEVILLE, North Carolina. Credentials: MD.
How much does WINSTON ELLISTON, MD prescribe under Medicare Part D?
In 2023, WINSTON ELLISTON, MD wrote 480 Medicare Part D claims totaling $66K in drug costs for 98 beneficiaries.
What is WINSTON ELLISTON, MD's Medicare quality score?
WINSTON ELLISTON, MD has a CMS MIPS Final Score of 27.6264/100 (Quality: 0, Cost: 92.088). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is WINSTON ELLISTON, MD located?
WINSTON ELLISTON, MD is located at 14 MCDOWELL ST, ASHEVILLE, NC, 28801. Phone: (828) 255-3749.
What is WINSTON ELLISTON, MD's NPI number?
WINSTON ELLISTON, MD's National Provider Identifier (NPI) is 1366433898, issued on 11/03/2005.
How many Allergy & Immunology Physician providers are there in the US?
There are 3,390 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does WINSTON ELLISTON, MD prescribe most often?
Based on 2023 Medicare Part D data, WINSTON ELLISTON, MD's most frequently prescribed drugs include Montelukast Sodium, Azelastine Hcl, Fluticasone Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WINSTON ELLISTON, MD accept Medicare?
WINSTON ELLISTON, MD appears in CMS Medicare data with 480 Part D claims and 98 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WINSTON ELLISTON, MD's credentials?
WINSTON ELLISTON, MD's NPI is 1366433898 with credentials MD. 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