2026 NPPES data Allergy & Immunology Physician NPI 1639161573 MD
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ANDREW MCKNIGHT, MD

Allergy & Immunology Physician in HENDERSON, Nevada. 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
114
Medicare Part D claims · 36 beneficiaries · Allergy & Immunology Physician avg: 764
Generic prescribing
49%
generic claims · 51% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$839.41
34 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ANDREW MCKNIGHT, MD is a Allergy & Immunology Physician ([object Object]) practicing in HENDERSON, Nevada with a Medicare Part D prescribing footprint of 114 claims across 36 beneficiaries — 51% brand-name prescribing . Industry payments of $839.41 across 34 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ANDREW MCKNIGHT, MD filed 114 Medicare Part D claims in 2023 across HENDERSON, Nevada. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

ANDREW MCKNIGHT, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

ANDREW MCKNIGHT, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/17/2005

NPI 1639161573

Primary specialty

Allergy & Immunology Physician

Niche

3,390 US NPIs in this specialty

Medicare Part D claims

114 85% vs specialty avg

2023 prescription claims

Specialty avg: 764

Specialty distribution in Nevada

How Allergy & Immunology Physician compares to other specialties among Nevada providers

Nevada providers

Allergy & Immunology Physician share within Nevada

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

Specialty board-certification context

Estimated specialty board-certified rate — Allergy & Immunology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Allergy & Immunology Physician ABMS/AOA estimate

Est. board-certified rate (Allergy & Immunology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Allergy & Immunology 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).

ANDREW MCKNIGHT, MD is a Allergy & Immunology Physician provider practicing in HENDERSON, Nevada, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1639161573. 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.

ANDREW MCKNIGHT, MD appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding MD credentials at 2485 W HORIZON RIDGE PKWY STE 100, HENDERSON, NV, 89052, with a listed phone of (702) 212-5889. NPI 1639161573 was issued on 08/17/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MCKNIGHT 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 114 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $59K 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.

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

2485 W HORIZON RIDGE PKWY STE 100
HENDERSON, NV 89052

Provider Details

NPI 1639161573
Specialty Allergy & Immunology Physician
Credentials MD
Gender Male
NPI Issued 08/17/2005

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 ANDREW MCKNIGHT, MD. Source: openpaymentsdata.cms.gov.

Total received

$839

Largest payer

AstraZeneca Pharmaceuticals LP

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 · Brand-heavy

ANDREW MCKNIGHT, MD — brand share 51.0%
Specialty average (est.)

51% brand-name claims vs 49% generic, on 114 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.

114
Total Claims
$59K
Total Drug Cost
36
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
147
Total Day Supply
3,955
Brand vs Generic
51% brand / 49% generic
Brand Drug Cost
$57K
Antibiotic Claims
11

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
0.95
Gender Split
64% female / 36% 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
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
16
Albuterol Sulfate Hfa
Albuterol Sulfate
14
Breo Ellipta
Fluticasone/Vilanterol
14

* 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 ANDREW MCKNIGHT, 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

ANDREW MCKNIGHT, MD's 114 claims are below the specialty average of 764.

Nearby Allergy & Immunology Physician Providers in Nevada

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

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

Frequently Asked Questions

What is ANDREW MCKNIGHT, MD's specialty?
ANDREW MCKNIGHT, MD specializes in Allergy & Immunology Physician and practices in HENDERSON, Nevada. Credentials: MD.
How much does ANDREW MCKNIGHT, MD prescribe under Medicare Part D?
In 2023, ANDREW MCKNIGHT, MD wrote 114 Medicare Part D claims totaling $59K in drug costs for 36 beneficiaries.
Where is ANDREW MCKNIGHT, MD located?
ANDREW MCKNIGHT, MD is located at 2485 W HORIZON RIDGE PKWY STE 100, HENDERSON, NV, 89052. Phone: (702) 212-5889.
What is ANDREW MCKNIGHT, MD's NPI number?
ANDREW MCKNIGHT, MD's National Provider Identifier (NPI) is 1639161573, issued on 08/17/2005.
Does ANDREW MCKNIGHT, MD prescribe more brand-name or generic drugs?
ANDREW MCKNIGHT, MD's prescribing is 51% brand-name and 49% generic drugs by claim count, with $57K in brand drug costs.
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 ANDREW MCKNIGHT, MD prescribe most often?
Based on 2023 Medicare Part D data, ANDREW MCKNIGHT, MD's most frequently prescribed drugs include Trelegy Ellipta, Albuterol Sulfate Hfa, Breo Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANDREW MCKNIGHT, MD accept Medicare?
ANDREW MCKNIGHT, MD appears in CMS Medicare data with 114 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANDREW MCKNIGHT, MD's credentials?
ANDREW MCKNIGHT, MD's NPI is 1639161573 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.
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